CN104988351B - A kind of button brass band and preparation method thereof - Google Patents

Abstract

The invention discloses a kind of button brass band and preparation method thereof, by strictly controlling the content of Fe elements and Pb elements in raw material, the Processes and apparatus handled by the thickness according to brass band come selective annealing, by being forced quickly to cool down to the upper and lower surface of the ingot blank after hot rolling, further, after ingot blank upper and lower surface quickly cooling, by carrying out secondary hot rolling treatment to ingot blank, so that the brass band of output has the higher feature of environmental protection, adverse reaction will not be caused to human body；Ferromagnetic material content is seldom, button does not have magnetic substantially, pin machine examination will not be detected to measure, the content of other elements is adjusted simultaneously and is mutually matched, in the case that Pb and Fe contents decline in brass band, brass band is obtained more more preferable structure property and mechanical property than before, not only solve the problem of existing button brass band is present, additionally provide the brass band that a kind of structure property and mechanical property are more suitable for making button.

Description

A kind of button brass band and preparation method thereof

Technical field

The present invention relates to copper material processing technique field, more particularly, to a kind of button brass band and preparation method thereof.

Background technology

The mechanical performance and corrosion resisting property of brass are good, and electric heating property is higher, and proportion is small, and color and luster is good, be easy to melting with Processing, using extremely wide in brass band alloy.Because it has good processability, high-quality is produced with brass band Button, market prospects are very wide.

The medium-to-high grade dress ornament button of existing market circulation is required to examine by needle checking machine, because brass product belongs to gold Ferromagnetic material is usually contained inside category class alloy product, may be detected pin chance error if such material is exceeded is judged to inner Broken needle be present and smooth can not cross and examine, therefore, to control the Fe constituent contents in copper alloy chemical composition.With clothing product The continuous lifting of standard and the constantly improve of laws and regulations, button should also have the feature of environmental protection, avoid causing human body bad anti- Should, therefore, to control the Pb constituent contents in copper alloy chemical composition.

At present, there is the defects of temperature is inconsistent, performance is irregular, brass in conventional Copper fabrication annealing device bell type annealing furnace Band outside easily causes low cross-intensity, shaggy phenomenon, and annealing temperature higher position occurs that brass band bonds, brilliant The defects of grain is thick, or even the brass band having are smooth in normal illumination lower surface, but have occurred numb phenomenon in the overshoot of stretching, Detect that grain size is irregular by metallographic microscope, causing client can not use, and cause production cost to waste, do not have also at present There is technology to be fully solved the problem.

Therefore, how to provide a kind of brass band for being more suitable for making button is current those skilled in the art's urgent need to resolve Technical problem.

The content of the invention

In view of this, it is an object of the invention to provide a kind of button brass band, the brass band have the feature of environmental protection it is strong, without magnetic Property, surface-brightening, performance uniformly, the features such as tensile property is higher, be more suitable for making button.It is a further object of the present invention to provide A kind of preparation method of button brass band.

To solve above-mentioned technical problem, technical scheme provided by the invention is：

A kind of button brass band, including following components in percentage by weight：63.9%~64.2% Cu, 0~ 0.015% Fe, 0~0.0003% Pb, 32%~37% Zn, 0~0.005% Ni, 0~0.1% impurity element, Tensile strength<300MPa, elongation percentage>35%, grain size be 0.02 micron~0.025 micron, roughness be 0.02 micron~ 0.025 micron, hardness is 75HV~85HV.

Present invention also offers a kind of preparation method of above-mentioned button brass band, comprise the following steps：

1) founding：Virgin material and production feed back are put into smelting furnace melt according to a certain percentage, then pours into a mould, is cast Ingot, the ingot casting include following components in percentage by weight：63.9%~64.2% Cu, 0~0.015% Fe, 0~ 0.0003% Pb, 32%~37% Zn, 0~0.005% Ni, 0~0.1% impurity element；

2) hot rolling：The ingot casting that step 1) is obtained carries out hot rolling treatment, and the ingot casting is added in walking-beam furnace before hot rolling Heat, the tapping temperature of the ingot casting is 820 DEG C~850 DEG C, and discharging step-length is 6min/ roots, and the heat time is 3.5h~4h, is come out of the stove Before ensure that ingot casting temperature is uniform, hot rolling uses 11 passes, and finishing temperature control obtains ingot blank, institute at 500 DEG C~550 DEG C The thickness for stating ingot blank is 15mm~17mm, and width is 658mm~662mm；

3) milling face：The upper and lower surface of the ingot blank that step 2) is obtained carries out milling, two-sided milling thickness be 0.6mm~ 0.8mm, Milling Speed≤4.5m/min, milling cutter rotating speed are 770r/s~800r/s, and the transverse gage tolerance of ingot blank is behind milling face ± 0.01mm, longitudinal thickness tolerance are ± 0.015mm；

4) cold rolling cogging rolling process：Ingot blank behind the milling face that step 3) is obtained carries out cold rolling cogging rolling process and handled, including according to The cold rolling cogging of secondary progress, annealing and cleaning, the cold rolling cogging use 7 passes, and the finish to gauge thickness of 7 passages is followed successively by 10.5mm-7.7mm-5.7mm-4.2mm-3.2mm-2.5mm-2.0mm, obtain the brass band that thickness is 2.0mm, its thickness deviation For ± 0.02mm；

5) cold rolling is in rolling process processed:The brass band that step 4) obtains is carried out into cold rolling to handle in rolling process processed, including carried out successively System roll, annealing and cleaning；

6) cold rolling is kept on file rolling process：Brass band that step 5) obtains is carried out into cold rolling to keep on file rolling process processing, including carried out successively Keep on file roll, anneal and clean；

7) cold rolling finished product rolling process：The brass band that step 6) is obtained carries out the processing of cold rolling finished product rolling process, including carries out successively Finished product rolling, annealing and cleaning, wherein the roughness of finishing mill roll be less than 0.02 micron；

8) finished product process：The brass band that step 7) is obtained carries out stretch-bending straightening, obtains finished product brass band.

Preferably, in the cold rolling cogging roughing mill work roll surface roughness be 0.5 micron~0.6 micron, it is described Roughing mill work roll surface roughness is 0.35 micron~0.5 micron in system rolling, the finishing mill working roll of the finished product rolling Surface roughness is less than 0.02 micron.

Preferably, as thickness >=0.7mm of brass band, annealed using slick style bell furnace；

As thickness >=2.0mm of brass band, annealing temperature is 480 DEG C, soaking time 6h, tapping temperature<70℃；

When the thickness of brass band is between 0.7mm~2.0mm, annealing temperature is 460 DEG C, soaking time 5h, is come out of the stove Temperature<70℃.

Preferably, when using the slick style cover annealing, often complete an annealing process and clear up a heating mantles With stove seat, it is air-cooled that insulation carries out 0.5h after terminating.

Preferably, when the thickness of brass band is between 0.1mm~0.7mm, annealed using continous way air cushion furnace；Institute State continous way air cushion furnace Fen Wugelu areas, a preheating zone, three heating zones and a cooling zone, the temperature of three heating zones Degree control is at 680 DEG C~700 DEG C.

Preferably, the cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 7%~15%, and acid liquor temperature is normal temperature；

Alkali cleaning concentration of lye 2%~4%, alkali liquid temperature are 70 DEG C~80 DEG C；

60~80 DEG C of hot water temperature is used in washing；

Drying temperature is more than 70 DEG C.

Preferably, brush is used in cleaning, the brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, according to brass The drafts of brush described in belt surface quality control.

Preferably, between the step 2) and step 3), in addition to the upper and lower surface with water to the ingot blank Cooling treatment is carried out, it is 10 DEG C/s~20 DEG C/s to control cooling velocity, and it is 0.4mm~1.2mm to control one side cooling layer thickness, will The temperature of the ingot blank upper and lower surface is cooled to 20 DEG C~250 DEG C.

Preferably, between the cooling treatment and step 3), in addition to by the secondary hot rolling of ingot blank progress after cooling Reason, it is 5%~10% to control reduction ratio.

The present invention advantageous effects be：

1. the present invention is by strictly controlling the content of Fe elements and Pb elements in raw material so that Pb in the brass band of output Content is 0~0.0003%, and button has the higher feature of environmental protection made of the brass band, human body will not be caused bad anti- Should；So that Fe content is 0~0.015% in brass band, it is seldom by ferromagnetic material content in button made of the brass band, Button does not have magnetic substantially, will not be detected pin machine examination and measure, substantially avoided be mistaken as inner broken needle be present and can not The problem of smoothly crossing inspection, while adjust the content of other elements and mutually match, the feelings that Pb and Fe contents decline in brass band Under condition, brass band is set to obtain more more preferable structure property and mechanical property, its tensile strength than before<300MPa, elongation percentage> 35%, grain size be 0.02 micron~0.025 micron, roughness be 0.02 micron~0.025 micron, hardness be 75HV~ 85HV, the problem of existing button brass band is present is not only solved, it is more suitable to additionally provide a kind of structure property and mechanical property In the brass band for making button.

2. the Processes and apparatus that is handled according to the thickness of brass band come selective annealing of the present invention, when brass band thickness >= During 0.7mm, annealed using slick style bell furnace, for thinner thickness (thickness is between 0.1mm~0.7mm) brass band Annealed using continous way air cushion furnace, thus avoid used in original technique slick style bell furnace to thickness for 0.1mm~ Brass band between 0.7mm carries out caused quality problems of annealing, the brass band structure property and mechanical property of output Uniformly, tensile strength is higher, and surface-brightening, roughness is low, and crystal grain is tiny and uniform, print caused by brass band bonding does not occur Note, peeling, scuffing defect are few, so as to improve the quality of brass band, make it be more suitable for making button.

3. the characteristics of present invention makes full use of copper ingot blank thermal conductivity strong, after hot rolling, the upper and lower surface of ingot blank is carried out Quick cooling is forced, is cooled to 20 DEG C~250 DEG C in a short time by 500 DEG C~550 DEG C, it is 0.4mm to control cooling layer thickness ~1.2mm, growing up for crystal grain in cooling layer is prevented, the crystal grain in cooling layer has been refined, has improved the intensity and hardness of cooling layer, Reduce the plasticity and toughness of cooling layer；Further, in the present invention, ingot blank upper and lower surface quickly after cooling, is carried out to ingot blank Secondary hot rolling treatment, by carrying out micro cold deformation to ingot blank below recrystallization temperature, low temperature is carried out using hot-rolling mill The parameters such as rolling, strict controlled rolling power and mill speed so that metal plastic deformation occurs for above-mentioned cooling layer so that cooling layer Intensity and hardness further improve.After the intensity and hardness of ingot blank upper and lower surface improve, during later stage milling, one side is strictly controlled Milling amount is slightly less than above-mentioned cooling layer thickness, because the intensity and hardness of cooling layer are improved, relative to originally directly in purple Casting in bronze ingot milling, the generation for phenomena such as surface in ingot blank milling process sticks knife, scuffing, press-in copper powder, peeling is significantly reduced, very To being to avoid completely, the surface quality after ingot blank milling is improved, and then improves the production efficiency and product quality of brass band.

Embodiment

For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still It should be appreciated that these descriptions simply further illustrate the feature and advantage of the present invention, rather than the limit to the claims in the present invention System.

The invention provides a kind of button brass band, including following components in percentage by weight：63.9%~64.2% Cu, 0~0.015% Fe, 0~0.0003% Pb, 32%~37% Zn, 0~0.005% Ni, 0~0.1% Impurity element, tensile strength<300MPa, elongation percentage>35%, grain size is 0.02 micron~0.025 micron, roughness 0.02 Micron~0.025 micron, hardness is 75HV~85HV.

In button brass band provided by the invention, 0~0.0003% Pb causes manufactured button to have higher ring Guarantor property, will not cause adverse reaction to human body；0~0.015% Fe make it that ferromagnetic material content is seldom in manufactured button, Button does not have magnetic substantially, will not be detected pin machine examination and measure, substantially avoided be mistaken as inner broken needle be present and can not The problem of smoothly crossing inspection.

Furthermore the tensile strength of above-mentioned brass band<300MPa, elongation percentage>35%, hardness is 75HV~85HV, and is fluctuated It is smaller；Grain size is between 0.02 micron~0.025 micron, uniform small grains so that brass band has more preferable deep drawing quality Energy；Roughness is 0.02 micron~0.025 micron, and surface-brightening, above characteristic causes brass band provided by the invention to be more suitable for Make button.

Present invention also offers a kind of preparation method of button brass band, comprise the following steps：

1) founding：Virgin material and production feed back are put into smelting furnace melt according to a certain percentage, then pours into a mould, is cast Ingot, the ingot casting include following components in percentage by weight：63.9%~64.2% Cu, 0~0.015% Fe, 0~ 0.0003% Pb, 32%~37% Zn, 0~0.005% Ni, 0~0.1% impurity element；

2) hot rolling：The ingot casting that step 1) is obtained carries out hot rolling treatment, and the ingot casting is added in walking-beam furnace before hot rolling Heat, the tapping temperature of the ingot casting is 820 DEG C~850 DEG C, and discharging step-length is 6min/ roots, and the heat time is 3.5h~4h, is come out of the stove Before ensure that ingot casting temperature is uniform, hot rolling uses 11 passes, and finishing temperature control obtains ingot blank, institute at 500 DEG C~550 DEG C The thickness for stating ingot blank is 15mm~17mm, and width is 658mm~662mm；

3) milling face：The upper and lower surface of the ingot blank that step 2) is obtained carries out milling, two-sided milling thickness be 0.6mm~ 0.8mm, Milling Speed≤4.5m/min, milling cutter rotating speed are 770r/s~800r/s, and the transverse gage tolerance of ingot blank is behind milling face ± 0.01mm, longitudinal thickness tolerance are ± 0.015mm；

4) cold rolling cogging rolling process：Ingot blank behind the milling face that step 3) is obtained carries out cold rolling cogging rolling process and handled, including according to The cold rolling cogging of secondary progress, annealing and cleaning, the cold rolling cogging use 7 passes, and the finish to gauge thickness of 7 passages is followed successively by 10.5mm-7.7mm-5.7mm-4.2mm-3.2mm-2.5mm-2.0mm, obtain the brass band that thickness is 2.0mm, its thickness deviation For ± 0.02mm；

5) cold rolling is in rolling process processed:The brass band that step 4) obtains is carried out into cold rolling to handle in rolling process processed, including carried out successively System roll, annealing and cleaning；

6) cold rolling is kept on file rolling process：Brass band that step 5) obtains is carried out into cold rolling to keep on file rolling process processing, including carried out successively Keep on file roll, anneal and clean；

7) cold rolling finished product rolling process：The brass band that step 6) is obtained carries out the processing of cold rolling finished product rolling process, including carries out successively Finished product rolling, annealing and cleaning, wherein the roughness of finishing mill roll be less than 0.02 micron；

8) finished product process：The brass band that step 7) is obtained carries out stretch-bending straightening, obtains finished product brass band.

In the present invention, step 1) is founding process：By virgin material and our factory's feed back with 1:1 ratio, which is launched in electric arc furnaces, to be melted Change, be then poured into resistant to elevated temperatures casting mold and obtain ingot casting.Virgin material is 1# standard cathode coppers, and feed back is caused during production Tailing.By being used as founding raw material with the relatively low 1# standard cathode coppers of Pb contents from Fe, brass is controlled from source Fe and Pb content in band so that Fe and Pb content is relatively low in the brass band of output, Pb in the button made by the brass band Content is relatively low, has the higher feature of environmental protection, will not cause adverse reaction to human body；Fe contents in the button made by the brass band Relatively low, ferromagnetic material content is seldom, and button does not have magnetic substantially, will not be detected pin machine examination and measure, substantially avoided and be mistakenly considered Inner broken needle be present and can not smooth the problem of crossing inspection.

In the present invention, step 2) is hot-rolled process：The ingot casting that step 1) is obtained carries out hot rolling treatment, to described before hot rolling Ingot casting is heated in walking-beam furnace, and walking-beam furnace Heating Zone Temperature is 980 DEG C, and heat preservation zone temperature is 950 DEG C, and the ingot casting is come out of the stove Temperature is 820 DEG C~850 DEG C, and discharging step-length is 6min/ roots, and the heat time is 3.5h~4h, ensures that ingot casting temperature is equal before coming out of the stove Even, hot rolling uses 11 passes, and finishing temperature control obtains ingot blank at 500 DEG C~550 DEG C, and the thickness of the ingot blank is 15mm~17mm, width are 658mm~662mm.

In the present invention, step 3) is milling face process：The upper and lower surface for the ingot blank that step 2) is obtained carries out milling, Double Milling It is 0.6mm~0.8mm to cut thickness, Milling Speed≤4.5m/min, and milling cutter rotating speed is 770r/s~800r/s, ingot blank behind milling face Transverse gage tolerance is ± 0.01mm, and longitudinal thickness tolerance is ± 0.015mm.

In the present invention, step 4) is cold rolling cogging rolling process：Ingot blank behind the milling face that step 3) is obtained carries out cold rolling cogging Rolling process processing, including the cold rolling cogging carried out successively, annealing and cleaning, the cold rolling cogging use 7 passes, 7 passages Finish to gauge thickness be followed successively by 10.5mm-7.7mm-5.7mm-4.2mm-3.2mm-2.5mm-2.0mm, it is 2.0mm to obtain thickness Brass band, its thickness deviation are ± 0.02mm.In the cold rolling cogging roughing mill work roll surface roughness be 0.5 micron~ 0.6 micron.

Technology for Heating Processing is relevant with the thickness of band.As thickness >=0.7mm of brass band, entered using slick style bell furnace Row annealing；

As thickness >=2.0mm of brass band, annealing temperature is 480 DEG C, soaking time 6h, tapping temperature<70℃.

Heating mantles and stove seat that an annealing process clears up a slick style bell furnace are often completed, insulation is carried out after terminating 0.5h is air-cooled.

In the present invention, step 5) is cold rolling in rolling process processed:The brass band that step 4) is obtained carries out cold rolling at rolling process processed Reason, including what is carried out successively roll in system, annealing and cleaning, and the roughing mill work roll surface roughness in system rolls is 0.35 micron~0.5 micron.

As thickness >=0.7mm of brass band, annealed using slick style bell furnace；

When the thickness of brass band is between 0.7mm~2.0mm, annealing temperature is 460 DEG C, soaking time 5h, is come out of the stove Temperature<70℃.

Heating mantles and stove seat that an annealing process clears up a slick style bell furnace are often completed, insulation is carried out after terminating 0.5h is air-cooled.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 7%~15%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2%~4%, alkali liquid temperature are 70 DEG C~80 DEG C；

60~80 DEG C of hot water temperature is used in washing；

Drying temperature is more than 70 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, according to brass belt surface matter Amount controls the drafts of the brush.

In the present invention, step 6) is that cold rolling is kept on file rolling process：Brass band that step 5) obtains is carried out into cold rolling to keep on file at rolling process Reason, including what is carried out successively keep on file to roll, and anneal and clean.

When the thickness of brass band is between 0.1mm~0.7mm, annealed using continous way air cushion furnace；It is described continuous Formula air cushion furnace Fen Wugelu areas, a preheating zone, three heating zones and a cooling zone, the temperature control of heating zone is at 680 DEG C ~700 DEG C.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 7%~15%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2%~4%, alkali liquid temperature are 70 DEG C~80 DEG C；

60~80 DEG C of hot water temperature is used in washing；

Drying temperature is more than 70 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, according to brass belt surface matter Amount controls the drafts of the brush.

In the present invention, step 7) is cold rolling finished product rolling process：The brass band that step 6) is obtained is carried out at cold rolling finished product rolling process Reason, including the finished product rolling carried out successively, annealing and cleaning, obtain the brass band of target thickness, gloss level of roll be less than 0.02 micron.

Annealed using continous way air cushion furnace；The continous way air cushion furnace Fen Wugelu areas, a preheating zone, three plus Hot-zone and a cooling zone, the temperature control of heating zone is at 680 DEG C~700 DEG C.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 7%~15%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2%~4%, alkali liquid temperature are 70 DEG C~80 DEG C；

60~80 DEG C of hot water temperature is used in washing；

Drying temperature is more than 70 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, according to brass belt surface matter Amount controls the drafts of the brush.

In the present invention, step 8) is finished product process：Button is soft with brass band matter, after heat treatment, internal stresses release, and easily Brass band deformed steel strip is caused, to ensure the plate shape of soft state brass band, the brass band that step 7) is obtained carries out stretch-bending straightening, obtains To finished product brass band, it is preferred to use stretch bending-straightening machine is aligned, the defects of to avoid the warpage of brass band, lateral bending.Then it is right Finished product is tested, and the project of product inspection includes：Surface quality, tolerance, plate shape, mechanical performance, chemical composition, grain size, The parameters such as roughness.

In one embodiment of the invention, in above-mentioned steps 2) between step 3), in addition to water to the ingot blank Upper and lower surface carry out cooling treatment, it is 10 DEG C/s~20 DEG C/s control cooling velocity, control one side cooling layer thickness For 0.4mm~1.2mm, the temperature of the ingot blank upper and lower surface is cooled to 20 DEG C~250 DEG C.

The characteristics of present invention makes full use of copper ingot blank thermal conductivity strong, after hot rolling, the upper and lower surface of ingot blank is carried out by force The quick cooling of system, 20 DEG C~250 DEG C are cooled to by 500 DEG C~550 DEG C in a short time, control the one side cooling layer thickness to be 0.4mm~1.2mm, prevent growing up for crystal grain in cooling layer, refined the crystal grain in cooling layer, improve cooling layer intensity and Hardness, reduces the plasticity and toughness of cooling layer, strict to control one side milling amount to be slightly less than above-mentioned cooling thickness during follow-up milling Degree, because the intensity and hardness of cooling layer are improved, relative to the directly milling on copper ingot blank originally, significantly reduces ingot Base surface sticks the generation of phenomena such as knife, scuffing, press-in copper powder, peeling, even avoids completely, improves the table after ingot blank milling Face quality, and then improve the production efficiency and product quality of brass band.

In one embodiment of the invention, between above-mentioned cooling treatment and step 3), in addition to by the ingot after cooling Base carries out secondary hot rolling treatment, and it is 5%~10% to control reduction ratio.After ingot blank upper and lower surface quickly cools down, further to ingot Base carries out secondary hot rolling treatment, by carrying out micro cold deformation to ingot blank below recrystallization temperature, is entered using hot-rolling mill The parameter such as row zerolling, strict controlled rolling power and mill speed so that metal plastic deformation occurs for above-mentioned cooling layer so that The intensity and hardness of cooling layer further improve, strict to control one side milling amount to be slightly less than above-mentioned cooling thickness during follow-up milling Degree, because the intensity and hardness of cooling layer are improved, relative to the directly milling on copper ingot blank originally, significantly reduces ingot Base surface sticks the generation of phenomena such as knife, scuffing, press-in copper powder, peeling, even avoids completely, improves the table after ingot blank milling Face quality, and then improve the production efficiency and product quality of brass band.

According to above-mentioned, one side milling amount is slightly less than the thickness of cooling layer, and after milling, ingot blank upper and lower surface can be left necessarily The cooling layer of thickness, the structure property and mechanical property of the cooling layer and the difference of ingot blank main body, its hardness and intensity are higher than ingot The intensity and hardness of base main body, plasticity and toughness are less than the work such as plasticity and toughness, cold rolling that so can be to the later stage of ingot blank main body Sequence processing affects greatly, and can also influence the product quality of target product brass band.Therefore, in one embodiment of the present of invention In, also include making annealing treatment ingot blank between above-mentioned secondary hot rolling treatment and step 3), the temperature of the annealing is 460 DEG C~490 DEG C, the time of annealing is 4h~6h.By annealing, the hardness and intensity of cooling layer are reduced, is made Obtaining ingot blank, structure property and mechanical property are more aligned and uniform on the whole, machinability are improved, beneficial to the cold rolling in later stage Processing；Eliminate quickly cool down early stage, residual stress caused by Low Temperature Hot Rolling, stabilize ingot blank size, reduce post-production Middle ingot blank deformation and crackle tendency；Crystal grain has been refined, have adjusted tissue, has eliminated tissue defects.

1# standard cathode coppers used in the present invention meet national standard GB/T467-1997, and institute meets national standard GB/ using zinc ingot metal T470-2008, chemical composition meet GB/T5231-2010, and detection method meets GB/T2059-2008, and brass band tolerance meets GB/T17793-2010。

Raw material that the present invention does not elaborate, method and device etc. are prior art.

For a further understanding of the present invention, with reference to embodiment to a kind of button brass band provided by the invention and its Preparation method is described in detail, and protection scope of the present invention is not limited by the following examples.

Embodiment 1

Below with the H65 trades mark, specification：0.21 × 305M, exemplified by, button is carried out in detail with the production and processing technology of brass band State：

1) founding：Virgin material and our factory's feed back are launched in electric arc furnaces and dissolved, wherein the ratio shared by virgin material and our factory's feed back Example is 50%, is then poured into resistant to elevated temperatures casting mold；Obtain Cu contents be 64.01%, Zn contents be 35.93%, P≤ 0.001%, Fe content are that 0.0125%, Pb contents are that 0.0001%, Ni contents are 0.004%, impurity summation<0.1%, size For 630 × 220mm ingot casting, above-mentioned content is weight percentage.

2) hot rolling：Hot rolling treatment is carried out to the ingot casting for handling to obtain through founding, brass ingot casting entered in walking-beam furnace before hot rolling Row heating, walking-beam furnace Heating Zone Temperature are 980 DEG C, and heat preservation zone temperature is 950 DEG C, and ingot casting tapping temperature is 820 DEG C, and discharge step-length For 6min/ roots, heat time 4h, hot-rolling mill is rolled using 11 passages, and finishing temperature control obtains ingot blank at 550 DEG C, The thickness of ingot blank is 15.9mm, width 661mm.

3) cooling treatment is carried out to the upper and lower surface of the ingot blank with deionized water, it is 20 to control cooling velocity DEG C/s, it is 0.4mm to control cooling layer thickness, and the temperature of upper and lower surface is cooled into 250 DEG C.

4) ingot blank is subjected to secondary hot rolling treatment, control reduction ratio be 10%, obtain thickness be 14.31mm ingot blank, two The hardness of the upper surface of ingot blank is 150HV after secondary hot rolling treatment, and the hardness of lower surface is 146HV.

5) milling face：Milling is carried out to the upper and lower surface of ingot blank obtained by hot rolling using whirlwind Double Milling, wherein two-sided milling amount For 0.6mm, the ingot blank thickness obtained after milling is 13.71mm, Milling Speed 4m/min, milling cutter rotating speed 780r/s, during milling face Local defect reconditioning is carried out to brass band surface defect, ensures brass band surface quality.

6) ingot blank is made annealing treatment, the temperature of the annealing is 490 DEG C, and the time of annealing is 4h.

7) cold rolling cogging rolling process：The ingot blank that step 6) is obtained carries out the processing of cold rolling cogging rolling process, including carry out successively Cold rolling cogging, annealing and cleaning, using 7 passes techniques, the finish to gauge thickness of 7 passages is followed successively by：10.5mm-7.7mm- 5.7mm-4.2mm-3.2mm-2.5mm-2.0mm；It is expected that roll-force：450t-550t-600t-550t-500t-450t-400t； The brass band that thickness is 2.0mm is obtained, its thickness deviation is -0.013mm, roughing mill work roll surface roughness in cold rolling cogging For 0.573 micron.

Then, annealed using slick style bell furnace；Brass tape thickness is 2.0mm, 480 DEG C of annealing temperature, during insulation Between 6h, tapping temperature<70℃.Its performance：Tensile strength is 273MPa, and hardness 83HV, mean grain size is 0.039 micron, But grain size is irregular.

Heating mantles and stove seat that an annealing process clears up a slick style bell furnace are often completed, insulation is carried out after terminating 0.5h is air-cooled.

8) cold rolling is in rolling process processed:The brass band that step 7) obtains is carried out into cold rolling to handle in rolling process processed, including carried out successively System roll, annealing and cleaning, it is described system rolling use 3 passes, the finish to gauge thickness of 3 passages is followed successively by 1.24mm-0.91mm-0.7mm, the brass band that thickness is 0.7mm is obtained, its thickness deviation is -0.01mm, thick in system rolls Operation roll of mill surface roughness is 0.365 micron.

Then, annealed using slick style bell furnace；Brass tape thickness is 0.7mm, 460 DEG C of annealing temperature, during insulation Between 5h, tapping temperature<70℃.

Heating mantles and stove seat that an annealing process clears up a slick style bell furnace are often completed, insulation is carried out after terminating 0.5h is air-cooled.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 9.5%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.5%, alkali liquid temperature are 78 DEG C；

65 DEG C of hot water temperature is used in washing；

Drying temperature is 75 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, controls the pressure of the brush Lower amount is 25%.

9) cold rolling is kept on file rolling process：Brass band that step 8) obtains is carried out into cold rolling to keep on file rolling process processing, including carried out successively Keep on file roll, anneal and clean, it is described keep on file rolling use 2 passes, the finish to gauge thickness of 2 passages is followed successively by 0.46mm-0.38mm, the brass band that thickness is 0.38mm is obtained, its thickness deviation is -0.01mm.

Then, annealed using continous way air cushion furnace；The continous way air cushion furnace Fen Wugelu areas, a preheating zone, Three heating zones and a cooling zone, the temperature control of heating zone is at 700 DEG C, when brass tape thickness is 0.38mm, the speed of service For 44.2m/min, obtained brass band performance is tensile strength 253MPa, and hardness 76HV, crystal grain is uniform, mean grain size 0.025 micron.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 11%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.7%, alkali liquid temperature are 72 DEG C；

68 DEG C of hot water temperature is used in washing；

Drying temperature is 80 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, controls the pressure of the brush Lower amount is 30%.

10) cold rolling finished product rolling process：The brass band that step 9) is obtained carries out the processing of cold rolling finished product rolling process, including carries out successively Finished product rolling, annealing and cleaning, finished product rolling use 1 passes, and the finish to gauge thickness of 1 passage is followed successively by 0.21mm, the brass band that thickness is 0.21mm is obtained, its thickness deviation is -0.006mm, 0.0198 micron of gloss level of roll.

Then, annealed using continous way air cushion furnace；The continous way air cushion furnace Fen Wugelu areas, a preheating zone, Three heating zones and a cooling zone, the temperature control of heating zone is at 700 DEG C, and when thickness is 0.21mm, the speed of service is 55.8m/min, performance are tensile strength 246MPa, and hardness 81HV, crystal grain is uniform, 0.021 micron of mean grain size.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 8.2%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.1%, alkali liquid temperature are 72 DEG C；

70 DEG C of hot water temperature is used in washing；

Drying temperature is 82 DEG C.

Without using brush in cleaning.

11) finished product process：Stretch-bending straightening is carried out using stretch bending-straightening machine to brass band, the extension of brass band during stretch-bending straightening Rate is 0.15%；The defects of to avoid the warpage of brass band, lateral bending；Then finished product is tested, the project bag of product inspection Include：The parameters such as surface quality, tolerance, plate shape, mechanical performance, chemical composition, grain size, roughness.

Embodiment 2

Below with the H65 trades mark, specification：0.23 × 305M, exemplified by, button is carried out in detail with the production and processing technology of brass band State：

1) founding：Virgin material and our factory's feed back are launched in electric arc furnaces and dissolved, wherein the ratio shared by virgin material and our factory's feed back Example is 50%, is then poured into resistant to elevated temperatures casting mold；Obtain Cu contents be 64.12%, Zn contents be 35.83%, P≤ 0.001%, Fe content are that 0.0057%, Pb contents are that 0.00015%, Ni contents are 0.0035%, impurity summation<0.1%, chi It is very little be 630 × 220mm ingot casting, above-mentioned content is weight percentage.

2) hot rolling：Hot rolling treatment is carried out to the ingot casting for handling to obtain through founding, brass ingot casting entered in walking-beam furnace before hot rolling Row heating, walking-beam furnace Heating Zone Temperature are 980 DEG C, and heat preservation zone temperature is 950 DEG C, and ingot casting tapping temperature is 830 DEG C, and discharge step-length For 6min/ roots, hot-rolling mill is rolled using 11 passages, and finishing temperature control obtains ingot blank at 525 DEG C, and the thickness of ingot blank is 15.9mm, width 661mm.

3) cooling treatment is carried out to the upper and lower surface of the ingot blank with deionized water, it is 15 to control cooling velocity DEG C/s, it is 0.8mm to control cooling layer thickness, and the temperature of upper and lower surface is cooled into 50 DEG C.

4) ingot blank is subjected to secondary hot rolling treatment, control reduction ratio be 8%, obtain thickness be 14.628mm ingot blank, two The hardness of the upper surface of ingot blank is 140HV after secondary hot rolling treatment, and the hardness of lower surface is 143HV.

5) milling face：Milling is carried out to the upper and lower surface of ingot blank obtained by hot rolling using whirlwind Double Milling, wherein two-sided milling amount For 0.7mm, the ingot blank thickness obtained after milling is 13.928mm, width 661mm, Milling Speed 4m/min, milling cutter rotating speed 780r/s, local defect reconditioning is carried out to brass band surface defect during milling face, ensure brass band surface quality.

6) ingot blank is made annealing treatment, the temperature of annealing is 475 DEG C, and the time of annealing is 5h.

7) cold rolling cogging rolling process：The ingot blank that step 6) is obtained carries out the processing of cold rolling cogging rolling process, including carry out successively Cold rolling cogging, annealing and cleaning, using 7 passes techniques, the finish to gauge thickness of 7 passages is followed successively by：10.5mm-7.7mm- 5.7mm-4.2mm-3.2mm-2.5mm-2.0mm；It is expected that roll-force：450t-550t-600t-550t-500t-450t-400t； The brass band that thickness is 2.0mm is obtained, its thickness deviation is -0.013mm.Roughing mill work roll surface is thick in the cold rolling cogging Rugosity is 0.591 micron.

Then, annealed using slick style bell furnace；Brass tape thickness is 2.0mm, 480 DEG C of annealing temperature, during insulation Between 6h, tapping temperature<70℃.Band performance：Tensile strength 260MPa, hardness 79HV, mean grain size 0.041mm, but crystal grain Size is irregular.

Heating mantles and stove seat that an annealing process clears up a slick style bell furnace are often completed, insulation is carried out after terminating 0.5h is air-cooled.

8) cold rolling is in rolling process processed:The brass band that step 7) obtains is carried out into cold rolling to handle in rolling process processed, including carried out successively System roll, annealing and cleaning, it is described system rolling use 3 passes, the finish to gauge thickness of 3 passages is followed successively by 1.24mm-0.91mm-0.7mm obtaining the brass band that thickness is 0.7mm, its thickness deviation is -0.01mm.It is described to be rolled in system Middle roughing mill work roll surface roughness is 0.365 micron.

Then, annealed using slick style bell furnace；Brass tape thickness is 0.7mm, 460 DEG C of annealing temperature, during insulation Between 5h, tapping temperature<70℃.Band performance：Tensile strength 265MPa, hardness 78HV, mean grain size 0.042mm, but crystal grain Size is irregular.

Heating mantles and stove seat that an annealing process clears up a slick style bell furnace are often completed, insulation is carried out after terminating 0.5h is air-cooled.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 10.5%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.6%, alkali liquid temperature are 78 DEG C；

65 DEG C of hot water temperature is used in washing；

Drying temperature is 75 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, controls the pressure of the brush Lower amount is 25%.

9) cold rolling is kept on file rolling process：Brass band that step 8) obtains is carried out into cold rolling to keep on file rolling process processing, including carried out successively Keep on file roll, anneal and clean, it is described keep on file rolling use 1 passes, the finish to gauge thickness of 1 passage is 0.46mm, is obtained To the brass band that thickness is 0.46mm, its thickness deviation is -0.01mm.

Then, annealed using continous way air cushion furnace；The continous way air cushion furnace Fen Wugelu areas, a preheating zone, Three heating zones and a cooling zone, the temperature control of heating zone is at 700 DEG C, when brass tape thickness is 0.46mm, the speed of service For 41m/min, obtained brass band performance is tensile strength 269MPa, and hardness 80HV, crystal grain is uniform, mean grain size 0.026mm。

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 11.5%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.8%, alkali liquid temperature are 72 DEG C；

68 DEG C of hot water temperature is used in washing；

Drying temperature is 80 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, controls the pressure of the brush Lower amount is 30%.

10) cold rolling finished product rolling process：The brass band that step 9) is obtained carries out the processing of cold rolling finished product rolling process, including carries out successively Finished product rolling, annealing and cleaning, finished product rolling use 1 passes, and the finish to gauge thickness of 1 passage is 0.23mm, is obtained To the brass band that thickness is 0.23mm, its thickness deviation is -0.007mm, 0.0196 micron of gloss level of roll.

Then, annealed using continous way air cushion furnace；The continous way air cushion furnace Fen Wugelu areas, a preheating zone, Three heating zones and a cooling zone, the temperature control of heating zone is at 700 DEG C, when thickness is 0.23mm, speed of service 56m/ Min, performance are tensile strength 251MPa, and hardness 80HV, crystal grain is uniform, mean grain size 0.021mm.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 9.2%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.3%, alkali liquid temperature are 72 DEG C；

70 DEG C of hot water temperature is used in washing；

Drying temperature is 82 DEG C.

Without using brush in cleaning.

11) finished product process：Stretch-bending straightening is carried out using stretch bending-straightening machine to brass band, the extension of brass band during stretch-bending straightening Rate is 0.15%；The defects of to avoid the warpage of brass band, lateral bending；Then finished product is tested, the project bag of product inspection Include：The parameters such as surface quality, tolerance, plate shape, mechanical performance, chemical composition, grain size, roughness.

Embodiment 3

Below with the H65 trades mark, specification：0.27 × 305M, exemplified by, button is carried out in detail with the production and processing technology of brass band State：

1) founding：Virgin material and our factory's feed back are launched in electric arc furnaces and dissolved, wherein the ratio shared by virgin material and our factory's feed back Example is 50%, is then poured into resistant to elevated temperatures casting mold；Obtain Cu contents be 64.0%, Zn contents be 35.56%, P≤ 0.001%, Fe content are that 0.0139%, Pb contents are that 0.00012%, Ni contents are 0.0038%, impurity summation<0.1%, chi It is very little be 630 × 220mm ingot casting, above-mentioned content is weight percentage.

2) hot rolling：Hot rolling treatment is carried out to the ingot casting for handling to obtain through founding, brass ingot casting entered in walking-beam furnace before hot rolling Row heating, walking-beam furnace Heating Zone Temperature are 980 DEG C, and heat preservation zone temperature is 950 DEG C, and ingot casting tapping temperature is 845 DEG C, and discharge step-length For 6min/ roots, hot-rolling mill is rolled using 11 passages, and finishing temperature control is at 500 DEG C, and brass tape thickness obtains ingot after hot rolling Base, the thickness of ingot blank is 16mm, width 661mm.

3) cooling treatment is carried out to the upper and lower surface of the ingot blank with deionized water, it is 10 to control cooling velocity DEG C/s, it is 1.2mm to control cooling layer thickness, and the temperature of upper and lower surface is cooled into 20 DEG C.

4) ingot blank is subjected to secondary hot rolling treatment, it is 5% to control reduction ratio, obtains the ingot blank that thickness is 15.2mm, secondary The hardness of the upper surface of ingot blank is 130HV after hot rolling treatment, and the hardness of lower surface is 136HV.

5) milling face：Milling is carried out to the upper and lower surface of ingot blank obtained by hot rolling using whirlwind Double Milling, wherein two-sided milling amount For 0.8mm, the ingot blank thickness obtained after milling is 14.4mm, Milling Speed 4m/min, milling cutter rotating speed 780r/s, during milling face pair Brass band surface defect carries out local defect reconditioning, ensures brass band surface quality.

6) ingot blank is made annealing treatment, the temperature of annealing is 460 DEG C, and the time of annealing is 6h.

7) cold rolling cogging rolling process：The ingot blank that step 6) is obtained carries out the processing of cold rolling cogging rolling process, including carry out successively Cold rolling cogging, annealing and cleaning, using 7 passes techniques, the finish to gauge thickness of 7 passages is followed successively by：10.5mm-7.7mm- 5.7mm-4.2mm-3.2mm-2.5mm-2.0mm；It is expected that roll-force：450t-550t-600t-550t-500t-450t-400t； The brass band that thickness is 2.0mm is obtained, its thickness deviation is -0.013mm.Roughing mill work roll surface is thick in the cold rolling cogging Rugosity is 0.599 micron.

Then, annealed using slick style bell furnace；Brass tape thickness is 2.0mm, 480 DEG C of annealing temperature, during insulation Between 6h, tapping temperature<70℃.Band performance：Tensile strength 263MPa, hardness 80HV, 0.043 micron of mean grain size, but it is brilliant Grain size is irregular.

Heating mantles and stove seat that an annealing process clears up a slick style bell furnace are often completed, insulation is carried out after terminating 0.5h is air-cooled.

8) cold rolling is in rolling process processed:The brass band that step 4) obtains is carried out into cold rolling to handle in rolling process processed, including carried out successively System roll, annealing and cleaning, it is described system rolling use 2 passes, the finish to gauge thickness of 2 passages is followed successively by 1.24mm-1.0mm, the brass band that thickness is 1.0mm is obtained, its thickness deviation is -0.012mm.The roughing in system rolls Machine work roll surface roughness is 0.47 micron.

Then, annealed using slick style bell furnace；Brass tape thickness is 1.0mm, 460 DEG C of annealing temperature, during insulation Between 5h, tapping temperature<70℃.Band performance：Tensile strength 272MPa, hardness 79HV, 0.039 micron of mean grain size, but it is brilliant Grain size is irregular.

Heating mantles and stove seat that an annealing process clears up a slick style bell furnace are often completed, insulation is carried out after terminating 0.5h is air-cooled.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 10.5%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.6%, alkali liquid temperature are 78 DEG C；

65 DEG C of hot water temperature is used in washing；

Drying temperature is 75 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, controls the pressure of the brush Lower amount is 25%.

9) cold rolling is kept on file rolling process：Brass band that step 5) obtains is carried out into cold rolling to keep on file rolling process processing, including carried out successively Keep on file roll, anneal and clean, it is described keep on file rolling use 1 passes, the finish to gauge thickness of 1 passage is followed successively by 0.54mm, the brass band that thickness is 0.54mm is obtained, its thickness deviation is -0.01mm.

Then, annealed using continous way air cushion furnace；The continous way air cushion furnace Fen Wugelu areas, a preheating zone, Three heating zones and a cooling zone, the temperature control of heating zone is at 700 DEG C, when brass tape thickness is 0.54mm, the speed of service For 41m/min, obtained brass band performance is tensile strength 273MPa, and hardness 82HV, crystal grain is uniform, mean grain size 0.024 Micron.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 11.5%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.8%, alkali liquid temperature are 72 DEG C；

68 DEG C of hot water temperature is used in washing；

Drying temperature is 80 DEG C.

Brush is used in cleaning；The brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, controls the pressure of the brush Lower amount is 30%.

10) cold rolling finished product rolling process：The brass band that step 6) is obtained carries out the processing of cold rolling finished product rolling process, including carries out successively Finished product rolling, annealing and cleaning, finished product rolling use 1 passes, and the finish to gauge thickness of 1 passage is followed successively by 0.27mm, the brass band that thickness is 0.27mm is obtained, its thickness deviation is -0.008mm, and gloss level of roll is 0.0187 micron.

Then, annealed using continous way air cushion furnace；The continous way air cushion furnace Fen Wugelu areas, a preheating zone, Three heating zones and a cooling zone, the temperature control of heating zone is at 700 DEG C, when thickness is 0.27mm, speed of service 54m/ Min, performance are tensile strength 254MPa, and hardness 79HV, crystal grain is uniform, mean grain size 0.022mm.

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 9.2%, and acid liquor temperature is normal temperature；The concentrated sulfuric acid that acid used is 98%；

Alkali cleaning concentration of lye 2.3%, alkali liquid temperature are 72 DEG C；

70 DEG C of hot water temperature is used in washing；

Drying temperature is 82 DEG C.

Without using brush in cleaning.

11) finished product process：Stretch-bending straightening is carried out using stretch bending-straightening machine to brass band, the extension of brass band during stretch-bending straightening Rate is 0.15%；The defects of to avoid the warpage of brass band, lateral bending；Then finished product is tested, the project bag of product inspection Include：The parameters such as surface quality, tolerance, plate shape, mechanical performance, chemical composition, grain size, roughness.

Table 1 is the performance data for the brass band that various embodiments of the present invention obtain

Embodiment	Crystal grain deg micron	Coarse deg micron	Tensile strength (MPa)	Hardness/HV
					Embodiment 1	0.021	0.0198	246	81
Embodiment 2	0.023	0.0196	251	80
					Embodiment 3	0.019	0.0187	254	79

The explanation of above example is only intended to help the method and its core concept for understanding the present invention.It should be pointed out that pair For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.

The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention. A variety of modifications for these embodiments are it will be apparent that defined herein one for those skilled in the art As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with principles disclosed herein and features of novelty Widest range.

Claims (1)

1. a kind of preparation method of button brass band, it is characterised in that comprise the following steps：

1) founding：Virgin material and production feed back are put into smelting furnace melt according to a certain percentage, then pours into a mould, obtains ingot casting, institute Stating ingot casting includes following components in percentage by weight：63.9%~64.2% Cu, 0~0.015% Fe, 0~0.0003% Pb, 32%~37% Zn, 0~0.005% Ni, 0~0.1% impurity element；

2) hot rolling：The ingot casting that step 1) is obtained carries out hot rolling treatment, the ingot casting is heated in walking-beam furnace before hot rolling, institute The tapping temperature for stating ingot casting is 820 DEG C~850 DEG C, and discharging step-length is 6min/ roots, and the heat time is 3.5h~4h, before coming out of the stove really Guarantor's ingot casting temperature is uniform, and hot rolling uses 11 passes, and finishing temperature control obtains ingot blank, the ingot at 500 DEG C~550 DEG C The thickness of base is 15mm~17mm, and width is 658mm~662mm；

3) milling face：The upper and lower surface of the ingot blank that step 2) is obtained carries out milling, and two-sided milling thickness is 0.6mm~0.8mm, milling Cut speed≤4.5m/min, milling cutter rotating speed is 770r/s~800r/s, and the transverse gage tolerance of ingot blank is ± 0.01mm behind milling face, Longitudinal thickness tolerance is ± 0.015mm；

4) cold rolling cogging rolling process：Ingot blank behind the milling face that step 3) is obtained carries out the processing of cold rolling cogging rolling process, including enters successively Capable cold rolling cogging and annealing, the cold rolling cogging use 7 passes, and the finish to gauge thickness of 7 passages is followed successively by 10.5mm- 7.7mm-5.7mm-4.2mm-3.2mm-2.5mm-2.0mm, obtain thickness be 2.0mm brass band, its thickness deviation for ± 0.02mm；

5) cold rolling is in rolling process processed:Brass band that step 4) obtains is carried out into cold rolling to handle in rolling process processed, including carry out successively System rolling, annealing and cleaning；

6) cold rolling is kept on file rolling process：Brass band that step 5) obtains is carried out into cold rolling to keep on file rolling process processing, including what is carried out successively stay Bottom rolls, annealing and cleaning；

7) cold rolling finished product rolling process：The brass band that step 6) is obtained carries out the processing of cold rolling finished product rolling process, including carry out successively into Product roll, and annealing and cleaning, the wherein roughness of finishing mill roll are less than 0.02 micron；

8) finished product process：The brass band that step 7) is obtained carries out stretch-bending straightening, obtains finished product brass band；

The button includes following components in percentage by weight with brass band：63.9%~64.2% Cu, 0~0.015% Fe, 0~0.0003% Pb, 32%~37% Zn, 0~0.005% Ni, 0~0.1% impurity element, tensile strength< 300MPa, elongation percentage>35%, grain size is 0.02 micron~0.025 micron, and roughness is 0.02 micron~0.025 micron, firmly Spend for 75HV~85HV；

Roughing mill work roll surface roughness is 0.5 micron~0.6 micron in the cold rolling cogging, the roughing in system rolls Machine work roll surface roughness is 0.35 micron~0.5 micron, and the finishing mill work roll surface roughness of the finished product rolling is Less than 0.02 micron；

As thickness >=0.7mm of brass band, annealed using slick style bell furnace；

As thickness >=2.0mm of brass band, annealing temperature is 480 DEG C, soaking time 6h, tapping temperature<70℃；

When the thickness of brass band is between 0.7mm~2.0mm, annealing temperature is 460 DEG C, soaking time 5h, tapping temperature< 70℃；

When using the slick style cover annealing, often complete an annealing process and clear up a heating mantles and stove seat, insulation It is air-cooled that 0.5h is carried out after end；

When the thickness of brass band is between 0.1mm~0.7mm, annealed using continous way air cushion furnace；The continous way gas Lu Fenwuge stoves area is padded, a preheating zone, three heating zones and a cooling zone, the temperature control of three heating zones exist 680 DEG C~700 DEG C；

The cleaning includes pickling, alkali cleaning, washing and the drying carried out successively；

Spent pickling acid liquid concentration is 7%~15%, and acid liquor temperature is normal temperature；

Alkali cleaning concentration of lye 2%~4%, alkali liquid temperature are 70 DEG C~80 DEG C；

60~80 DEG C of hot water temperature is used in washing；

Drying temperature is more than 70 DEG C；

Brush is used in cleaning, the brush includes 600 mesh abrasive brush and 1500 mesh polish brushes, according to brass band surface quality control Make the drafts of the brush；

The upper and lower surface of the ingot blank is carried out at cooling between the step 2) and step 3), in addition to water Reason, it is 10 DEG C/s~20 DEG C/s to control cooling velocity, and it is 0.4mm~1.2mm to control one side cooling layer thickness, by the ingot blank The temperature of surface and lower surface is cooled to 20 DEG C~250 DEG C；

Secondary hot rolling treatment, control pressure are carried out between the cooling treatment and step 3), in addition to by the ingot blank after cooling Rate is 5%~10%.