CN1690236A - Nickel silver band for piezoelectric crystal oscillator housing and method for producing same - Google Patents
Nickel silver band for piezoelectric crystal oscillator housing and method for producing same Download PDFInfo
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- CN1690236A CN1690236A CN200410017778.XA CN200410017778A CN1690236A CN 1690236 A CN1690236 A CN 1690236A CN 200410017778 A CN200410017778 A CN 200410017778A CN 1690236 A CN1690236 A CN 1690236A
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- copper strips
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- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000013078 crystal Substances 0.000 title abstract 2
- 239000010956 nickel silver Substances 0.000 title description 3
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 title 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000010949 copper Substances 0.000 claims abstract description 21
- 239000011701 zinc Substances 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 8
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 7
- 238000003801 milling Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 21
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 235000014692 zinc oxide Nutrition 0.000 claims description 15
- 239000011787 zinc oxide Substances 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000000137 annealing Methods 0.000 abstract description 25
- 238000005096 rolling process Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 11
- 238000005097 cold rolling Methods 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract description 2
- 239000000470 constituent Substances 0.000 abstract 3
- 238000009749 continuous casting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 14
- 238000005266 casting Methods 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 6
- 238000004080 punching Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 229910002482 Cu–Ni Inorganic materials 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- KBMLJKBBKGNETC-UHFFFAOYSA-N magnesium manganese Chemical compound [Mg].[Mn] KBMLJKBBKGNETC-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000675108 Citrus tangerina Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 206010027146 Melanoderma Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004523 agglutinating effect Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Metal Rolling (AREA)
Abstract
A packfong belt applying to the shell of piezoelectric crystal oscillator, the material of the copper alloy is prepared by adding nickel and zinc element, and the main chemical constituent is as following: Cu: 62.0 to 66.0 percent; Ni: 16.5 to 19.5 percent; Zn: residual. The workflow is: material checking and accepting - batching - melting - sampling and analyzing (adjusting constituent) - rolling in holding furnace - sampling and analyzing (adjusting constituent) - horizontal continuous casting - batching on - milling - cool cogging rolling - end shearing - intermediate annealing - cold rolling - intermediate annealing - fine rolling - end item annealing - cutting - end item quality inspection - packaging and warehouse-in. The invention settles many technical problems, such as the low tensile strength, the high dimensional tolerance and the poor surface finish quality of the present packfong belt, and it also improves the the shielding property and corrosion resistance.
Description
[technical field]
The present invention relates to the German silver material, particularly a kind of pierce oscillator shell zinc white copper strips and manufacture method thereof.
[background technology]
German silver is a kind of Cu alloy material of nickeliferous and zinc, and this alloy has beautiful silvery white, excellent material performance.The zinc white copper strips is generally used for connector, opticinstrument, photographic camera part, dress ornament, silver-plated base plate, etching base stage, tableware, nameplate, graduation of receiver dish, hardware, rivet, screw, truss line, slide fastener, hollow member and plug model etc.
Pierce oscillator shell major part is to form with the punching out of zinc white copper strips in the communication device, and the key technical indexes of existing zinc white copper strips is as follows:
| Chemical ingredients | Cu:62.0-65.0% Ni:13.5-16.0% Zn: surplus | |
| Mechanical property | Tensile strength | ????≥340MP |
| Tolerance of dimension | ????0.23±0.015 | |
| Surface smoothness | ????≤Ra0.4μm | |
Because the tensile strength of used Zn-Cu-Ni alloy strip material is not high, tolerance of dimension is big and surface smoothness is not good, and the performance of made pierce oscillator shell also can be subjected to bigger influence.And the shielding properties of material and corrosion resistance also have much room for improvement.
[summary of the invention]
The tensile strength that the present invention will solve existing Zn-Cu-Ni alloy strip material is not high, and the big and not good technical problem of surface smoothness of tolerance of dimension provides a kind of new pierce oscillator shell zinc white copper strips and manufacture method thereof.
For solving the problems of the technologies described above, the present invention is achieved in that
A kind of pierce oscillator shell zinc white copper strips, this Cu alloy material are to add nickel element and zinc element in fine copper, it is characterized in that the main chemical compositions of this Cu alloy material is as follows:
Cu：62.0-66.0％；
Ni：16.5-19.5％；
Zn: surplus.
Preferred version is:
Cu：63.0％；
Ni：17.0％；
Zn: surplus.
Its manufacturing process flow is: raw material is checked and accepted--→ batching--and → fusing--→ sampling analysis (adjustment composition)--→ change holding furnace over to--→ sampling analysis (adjustment composition)--→ horizontal casting--→ clot--→ milling face--→ cold cogging is rolling--→ cut the limit--→ process annealing--→ roll in cold--→ process annealing--→ finish rolling--→ finished products--→ cut--check of → final product quality---→ packing puts in storage.
[embodiment]
Consider that zinc white copper strips cold-forming property is excellent, hot workability is poor, and output is little and the existing equipment situation, therefore adopts horizontal casting to go out long made-up belt, again through milling face, cold cogging, process annealing, cold finish rolling, finished products and finished product sub-cut.
Its technical process is as follows:
Raw material is checked and accepted--→ batching--and → fusing--→ sampling analysis (adjustment composition)--→ change holding furnace over to--→ sampling analysis (adjustment composition)--→ horizontal casting--→ clot--→ milling face--→ cold cogging is rolling--→ cut the limit--→ process annealing--→ roll in cold--→ process annealing--→ finish rolling--→ finished products--→ cut--check of → final product quality---→ packing puts in storage.
1. production technology for casting
Be that the despumation influence finds optimal processing parameter to adopt brand-new material production formula rapidly when just beginning.Promptly press Cu:62.0-66.0%; Ni:16.5-19.5%; Zn: surplus, prepare burden.Adopting magnesium, manganese to do the deoxidation degasification uses.
Raw material elder generation has in the core line-frequency induction smelting furnace at 300 kilograms melts, and dry charcoal is topped with anti-oxidation air-breathing.Drag for surface scum before the converter, add magnesium manganese behind the sampling analysis and carry out the degasification deoxidation.Converter when composition meets the requirements, 1180 ~ 1280 ℃ of converter temperature.Copper liquid has changed core line-frequency induction holding furnace over to through chute, and the holding furnace actual capacity is 1.5 tons, and holding furnace can make copper liquid liquid level and temperature keep stable, normally the carrying out of favourable casting.Add the deoxidation degasification of magnesium manganese after the converter again and drag for removing dross sampling analysis simultaneously, qualified to guarantee chemical ingredients.In time add dry charcoal simultaneously and cover, in case air-breathing oxidation.
The crystallizer that casting is adopted is made of interior logical water coolant steel bushing, copper sheathing, graphite flake.1160 ~ 1200 ℃ of casting temps, the forging type that adopt and to draw 2 ~ 3 seconds, stops 360 ~ 420 ℃ of 4 ~ 6 seconds, control made-up belt temperature out.Cast out made-up belt sectional area 16 * 330mm, made-up belt coils into the roll coil of strip behind hydraulic bending, and volume base internal diameter 550 ~ 600mm, volume length are rolled up heavy 2.3 ~ 2.56 tons at 50 ~ 56 meters.The made-up belt smooth surface, no raw edges, no pit, liquid cave line is smooth, even.Macroscopic view metallurgical analysis: cast structure's densification, defectives such as nothing is loose, pore-free, no slag inclusion, no cold shut.
2. made-up belt mills face technology
After casting out made-up belt, the horizontal casting production line mills face, to remove the defectives such as zone of oxidation on surface.Cast out made-up belt and go 0.5 ~ 0.6mm dark milling the every facing cut of face machine, mill the made-up belt behind the face, casting flaws such as the no blackspot in surface, pit, pore, slag inclusion, and defectives such as gluing of causing of the face that mills, chip breaking.Mill made-up belt thickness 14.8 ~ 15.2mm behind the face.
3. roughing technology
Because zinc white copper strips cold-forming property is good, so adopt the rolling method of direct cold cogging to carry out cogging.Roughing in that two/4-roller reversible cold rolling mill is cast made-up belt is rolled into the thick roll coil of strip of 2.0 ~ 2.4-0.05mm through 9 passages usually.
4. roughing annealing process
Casting made-up belt cold rolling working modulus is up to after 83% or more, and it is big to continue the rolled metal resistance to deformation, and plasticity hang down frangible limit, thus must carry out recrystallization annealing with the plasticity of recovery metal, reduce its resistance to deformation.The bell-jar bright annealing oven is taked in roughing annealing, and the shielding gas of strong convection is arranged in this stove, can make that the roll coil of strip heats up rapidly, the inside and outside performance of volume is even, and avoids oxidation, anneal 600 ~ 640 ℃, be incubated 4 ~ 6 hours, come out of the stove after air-cooled then/water-cooled.Made-up belt after the annealing shows through metallurgical analysis and measuring mechanical property and has recovered plasticity, has reached the purpose of process annealing.
5. roll process in cold
Roll operation in cold and still carry out on two/4-roller reversible cold rolling mill, it is different and different according to thickness, the state of finished product to roll thickness in cold.Usually be controlled between 0.5 ~ 0.8mm.
6. cut the limit
Because made-up belt limit portion is without milling face, through roughing and in made-up belt limit portion existing macroscopic broken limit phenomenon after rolling, must in time cut the limit, development causes the broken belt accident to the centre on broken limit in order to avoid further add man-hour.Cut the limit and carry out on slitter, every limit cuts off about 8 ~ 12mm.
7. intermediate annealing process
When in the bell-jar bright annealing oven, annealing, find that the easy adhesion of the roll coil of strip causes defectives such as the white silk in surface, hickie, through repeatedly groping to have found the method that solves adhesion: adopt small tension receiving coil rolling before the annealing at last together, to alleviate roll coil of strip layer and interlayer tension force; When the bell jar furnace annealing, suitably reduce annealing temperature, prolong soaking time.Thereby guaranteed the annealing quality of band in the bell jar stove.
8. finished product finish-rolling process
Because the user is very high with the thickness and precision requirement of zinc white copper strips to the pierce oscillator shell, as the thickness requirement deviation ± 0.005mm of 0.23mm band, is higher than the size deviation requirement of national standard high precision band.Two/4-roller reversible cold rolling mill rolling accuracy can satisfy the accuracy requirement of material thickness fully.The pierce oscillator shell state difference of the finish rolling cold working rate of zinc white copper strips according to user's finished product is controlled at 30 ~ 60%.
9. finished product annealing process
According to pierce oscillator shell zinc white copper strips annealing temperature height, long, the easy agglutinating characteristics of annealing time.We are divided into 8 rouleaus with the copper strips after rolling and anneal, and coiling tension has obtained reducing like this, and volume also greatly reduces, accomplish easily during annealing inside and outside evenly, performance is consistent.Suitably reduce annealing temperature simultaneously and prolong annealing time, satisfied the specification of quality that the user is even to performance, surface smoothness is high.
10. inspection after construction, shearing and packing
The band itemize is sheared us and is arranged on the slitter and carries out.Be anti-scratch, adopt each cleaning canvas pressing plate, separate, adopt packing machine to tie up, prevent the scuffing of loose winding soft attitude copper strip surface to narrow strip with Glass tubing.
Arrange special messenger's sampling to do mechanicl test at the cutting operation place, and copper strip surface quality and geometrical dimension deviation supervised timely check on, prevent that unacceptable product from dispatching from the factory.
Packing adopts neutralized paper and plastics film, and uses special-purpose wooden case.Prevent to store collide with scratch and oxidation stain in the transportation.
The key technical indexes of product of the present invention is as follows:
| Embodiment 1 | The present invention | The present invention | ||
| Chemical ingredients | Cu:62.0% Ni:19.5% Zn: surplus | Cu:66.0% Ni:16.5 Zn: surplus | Cu:63.0% Ni:17.0% Zn: surplus | |
| Mechanical property | Tensile strength | ????400MP | ????450MP | ????450MP |
| Tolerance of dimension | ????0.23±0.005 | ????0.23±0.005 | ????0.23±0.005 | |
| Surface smoothness | ????Ra0.3μm | ????Ra0.25μm | ????Ra0.2μm | |
This alloy is to add nickel element and zinc element in fine copper, and the adding of nickel element makes alloy have argenteous outward appearance, by increasing the content of nickel element, has improved the shielding properties and the corrosion resistance nature of alloy material, has satisfied the requirement of pierce oscillator.
Manufacture method of the present invention advantage compared with prior art is:
1, packfong was to cast with swage in the past, ingot casting is short, and volume is heavy little, and band length is short, the uniformity of band performance, the uniformity of dimensional tolerance all do not reach user's requirement, the needs that can not adapt to continuous punching out, by horizontal casting packfong strand, ingot casting is long now, roll up great, the length of finished product band is long, and the uniformity of band performance, the uniformity of dimensional tolerance all are guaranteed, and satisfy the needs of continuous high speed punching out fully.
2, the carrying out of band mechanical performance strictly controlled, made it to satisfy the needs of deep-draw; Because this copper strips is used for deep-draw, if performance is hard, then ftracture during punching out; If performance is too soft, then product surface produces " tangerine peel " phenomenon after the punching out, can not satisfy the bright and clean requirement of piece surface after the punching out.
3, adopt the technique of finished product rouleau annealing, reduced coiling tension, copper strip surface adhesion problem when having solved finished products.
4, this alloy material is the α homogeneous structure, and finished product adopts the clock hood type furnace annealing in process, makes the grain size size of alloy evenly, has improved the deep drawability of material.
When 5, finished product is rolling, adopt the roll through polishing, make the surface roughness of alloy material less than 0.30 μ m, satisfied the requirement of pierce oscillator shell with the material best bright finish.
Claims (3)
1, a kind of pierce oscillator shell zinc white copper strips, this Cu alloy material are to add nickel element and zinc element in fine copper, it is characterized in that the main chemical compositions of this Cu alloy material is as follows:
Cu：62.0-66.0％；
Ni：16.5-19.5％；
Zn: surplus.
2, pierce oscillator shell zinc white copper strips according to claim 1 is characterized in that the main chemical compositions of this Cu alloy material is as follows:
Cu：63.0％；
Ni：17.0％；
Zn: surplus.
3, pierce oscillator shell zinc white copper strips according to claim 1 and 2, its manufacturing process flow is: raw material is checked and accepted--→ batching--→ fusing--→ sampling analysis (adjustment composition)--→ change holding furnace over to--→ sampling analysis (adjustment composition)--→ horizontal casting--→ clot--→ milling face--→ cold cogging is rolling--→ cut the limit--→ process annealing--→ roll in cold--→ process annealing--→ finish rolling--→ finished products--→ cut--check of → final product quality---→ packing puts in storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410017778XA CN100457938C (en) | 2004-04-20 | 2004-04-20 | Nickel silver band for piezoelectric crystal oscillator housing and method for producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410017778XA CN100457938C (en) | 2004-04-20 | 2004-04-20 | Nickel silver band for piezoelectric crystal oscillator housing and method for producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690236A true CN1690236A (en) | 2005-11-02 |
| CN100457938C CN100457938C (en) | 2009-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410017778XA Expired - Lifetime CN100457938C (en) | 2004-04-20 | 2004-04-20 | Nickel silver band for piezoelectric crystal oscillator housing and method for producing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100457938C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389218C (en) * | 2006-01-13 | 2008-05-21 | 菏泽广源铜带股份有限公司 | Method for manufacturing anti-corrosion alloy brass H65 and copper belt thereof |
| CN100404713C (en) * | 2005-11-28 | 2008-07-23 | 浙江大学 | Lead-free easy-to-cut zinc white copper alloy |
| CN100460538C (en) * | 2007-06-27 | 2009-02-11 | 北京有色金属研究总院 | Bismuth-contained lead-free easy-to-cut zinc-white copper alloy |
| CN102069353A (en) * | 2010-12-25 | 2011-05-25 | 安徽鑫科新材料股份有限公司 | Production process for packfong strips |
| CN103361583A (en) * | 2013-07-08 | 2013-10-23 | 安徽鑫科新材料股份有限公司 | Method for improving salt spray corrosion resistance of german silver |
| CN103627925A (en) * | 2013-12-02 | 2014-03-12 | 厦门火炬特种金属材料有限公司 | Nickelic packfong matrix alloy solder wire and preparation method thereof |
| CN103726000A (en) * | 2013-11-25 | 2014-04-16 | 青岛盛嘉信息科技有限公司 | Copper alloy strip production technique |
| CN113373344A (en) * | 2021-06-08 | 2021-09-10 | 浙江惟精新材料股份有限公司 | High-performance zinc white copper and preparation method thereof |
| CN116555621A (en) * | 2023-05-31 | 2023-08-08 | 浙江惟精新材料股份有限公司 | High-performance white copper with low conductivity and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102658452B (en) * | 2011-11-17 | 2014-07-16 | 中铝洛阳铜业有限公司 | Processing method of copper strip used for copper steel composites |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA936328A (en) * | 1971-09-30 | 1973-11-06 | J. English Christopher | Method and apparatus for continuous casting of metal strips |
| CN1097811A (en) * | 1994-05-07 | 1995-01-25 | 鞍山第一工程机械股份有限公司特种精密铸造厂 | Zinc-nickel-aluminium alloy and smelting technology thereof |
-
2004
- 2004-04-20 CN CNB200410017778XA patent/CN100457938C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404713C (en) * | 2005-11-28 | 2008-07-23 | 浙江大学 | Lead-free easy-to-cut zinc white copper alloy |
| CN100389218C (en) * | 2006-01-13 | 2008-05-21 | 菏泽广源铜带股份有限公司 | Method for manufacturing anti-corrosion alloy brass H65 and copper belt thereof |
| CN100460538C (en) * | 2007-06-27 | 2009-02-11 | 北京有色金属研究总院 | Bismuth-contained lead-free easy-to-cut zinc-white copper alloy |
| CN102069353A (en) * | 2010-12-25 | 2011-05-25 | 安徽鑫科新材料股份有限公司 | Production process for packfong strips |
| CN103361583A (en) * | 2013-07-08 | 2013-10-23 | 安徽鑫科新材料股份有限公司 | Method for improving salt spray corrosion resistance of german silver |
| CN103726000A (en) * | 2013-11-25 | 2014-04-16 | 青岛盛嘉信息科技有限公司 | Copper alloy strip production technique |
| CN103627925A (en) * | 2013-12-02 | 2014-03-12 | 厦门火炬特种金属材料有限公司 | Nickelic packfong matrix alloy solder wire and preparation method thereof |
| CN103627925B (en) * | 2013-12-02 | 2016-04-06 | 厦门火炬特种金属材料有限公司 | A kind of Nickelic packfong matrix alloy solder wire and preparation method thereof |
| CN113373344A (en) * | 2021-06-08 | 2021-09-10 | 浙江惟精新材料股份有限公司 | High-performance zinc white copper and preparation method thereof |
| CN116555621A (en) * | 2023-05-31 | 2023-08-08 | 浙江惟精新材料股份有限公司 | High-performance white copper with low conductivity and preparation method thereof |
| CN116555621B (en) * | 2023-05-31 | 2024-06-25 | 浙江惟精新材料股份有限公司 | High-performance white copper with low conductivity and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100457938C (en) | 2009-02-04 |
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