CN105734455A - Austenitic stainless steel applicable to production of beer barrels and manufacturing method and application thereof - Google Patents
Austenitic stainless steel applicable to production of beer barrels and manufacturing method and application thereof Download PDFInfo
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- CN105734455A CN105734455A CN201610178541.2A CN201610178541A CN105734455A CN 105734455 A CN105734455 A CN 105734455A CN 201610178541 A CN201610178541 A CN 201610178541A CN 105734455 A CN105734455 A CN 105734455A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0242—Flattening; Dressing; Flexing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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Abstract
The invention provides austenitic stainless steel applicable to production of beer barrels and a manufacturing method and application thereof. With the total weight as the standard, the austenitic stainless steel comprises, by weight, less than 0.08% of carbon, less than 1.0% of silicon, less than 2% of manganese, less than 0.045% of phosphorus, less than 0.030% of sulfur, 18-20% of chromium, 8.0-10.5% of nickel, 0.4-1.0% of copper, and the balance iron. According to the manufacturing method of the stainless steel, an intermediate blank with excellent surface quality and low inclusion content is used as a raw material blank, and the tensile property of a product can be enhanced. Thick packing paper of 45 g/m2 is adopted in the coiling process in a cold rolling step, and the surface effect of acid pickling and passivating can be improved. In addition, in the cold rolling and annealing process, the annealing temperature is decreased by 20 DEG C, color difference can be eliminated, and the acid pickling and passivating effect is improved. Accordingly, the manufactured austenitic stainless steel (a plate strip) is especially suitable for production of the beer barrels.
Description
Technical field
The present invention relates to a kind of 304 austenitic stainless steels, a kind of austenite stainless being applicable to produce barrel of beer
Steel and manufacture method thereof and application, belong to stainless steel smelting technical field.
Background technology
Austenitic stainless steel with SUS304 as representative has excellent corrosion resistance, thermostability, machinability etc. and combines
Closing performance, this product purpose is extensive, and market ratio shared in stainless steel product is the highest.Along with people's living standard
Raising, client stainless demand is no longer limited to the industry such as building, decoration, food hygiene, electronics use
304 austenite common 2B surface is (i.e. through Overheating Treatment, pickling, had through skin pass rolling after stainless-steel cold-rolling again
Some surfaces, the preferably silvery white in gloss, apparent condition is pasta), 2D surface (i.e. after stainless-steel cold-rolling through
The surface that heat treatment, pickling are had, color is silvery white, slightly has gloss, and apparent condition is cloudy surface) and
BA surface (i.e. after stainless-steel cold-rolling, brightness heat treatment, pickling, the surface that had through skin pass rolling again, table
Face does not aoxidize, and keeps the state before heat treatment), or the mirror board that is polished on this basis or grind to form
Abrasive sheet.The product that substantial amounts of applicable surface acid-washing, passivation and tensile property are excellent is needed on market.
The barrel of beer of international market demand was some materials such as plastics, glass in the past, due to plastics, the barrel of beer of glass
In terms of food safety, service life, transportation safety, there is a lot of drawback, increasingly can not meet the needs of client,
A lot of clients begin to use common stainless steel to produce barrel of beer.When common stainless steel produces barrel of beer, due to tensile property
Bad, cracking occurs more；And owing to surface needs pickling, passivation special handling (namely in stretching, welding
Carry out pickling, passivation afterwards, but be not polished, wire drawing, polishing etc. process), process bad surface and can there is color
Difference；Thus pickling, Passivation Treatment requirement can not be met.
Therefore, develop a kind of austenitic stainless steel and manufacture method thereof being applicable to produce barrel of beer, be still this area
One of problem demanding prompt solution.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of being applicable to and produce the austenite of barrel of beer not
Rust steel and manufacture method and application.The cold rolled sheet tensile property of this austenitic stainless steel is outstanding, be suitable for pickling, blunt
Metallization processes, and the material surface excellent quality after pickling, passivation, it is adaptable to produce barrel of beer.
For reaching above-mentioned purpose, the invention provides a kind of austenitic stainless steel being applicable to produce barrel of beer, with described
On the basis of the gross weight of austenitic stainless steel, its raw material composition includes: carbon less than 0.08%, silicon less than 1.0%, manganese
Less than 2%, phosphorus less than 0.045%, sulfur less than 0.030%, chromium 18-20%, nickel 8.0-10.5%, copper 0.4%-1.0%
And iron surplus.
Detailed description of the invention according to the present invention, it is preferable that the content of copper in the raw material composition of above-mentioned austenitic stainless steel
It is 0.5% (on the basis of the gross weight of described austenitic stainless steel).
Detailed description of the invention according to the present invention, it is preferable that above-mentioned austenitic stainless steel is by least following steps system
Make and obtain: each raw material of described austenitic stainless steel is carried out steel processed, then the raw material base obtained is carried out heat successively
Roll, hot-roll annealing pickling, cold rolling, cold rolled annealed pickling and finishing, obtain described being applicable to and produce barrel of beer
Austenitic stainless steel；
Wherein, after steel processed, remove steel toe base processed, tail base and mixing base, use pars intermedia base to enter as raw material base
Row hot rolling；
The coiling process of cold rolling step uses 45g/m2Packing paper；
Cold rolled annealed is to decline 20 DEG C with the stainless cold rolled annealed temperature of RZ4 purposes, i.e. 950 DEG C-1250 DEG C, enters
Row continuous annealing.
In the present invention one preferred implementation, described hot-roll annealing is to carry out continuous annealing, hot rolling at 950-1200 DEG C
Pickling after annealing is to use nitric acid+Fluohydric acid. nitration mixture acid cleaning process.
In the present invention one preferred implementation, after hot-roll annealing, use air cooling.Air cooling can reduce owing to water-cooled is residual
The aberration that the water wave trace stayed causes, it is to avoid chromatic aberration defect.
In the present invention one preferred implementation, described cold rolling be use Sendzimir mill group, wherein, cold rolling is total
Reduction ratio is 40-60%, and the passage before end 2 passage of described cold mill complex uses 120 mesh to grind working roll, and it is thick
Rugosity Ra is 0.1-0.3 μm；End 2 passage of described cold mill complex uses 240 mesh to grind working roll, its roughness
Ra is 0.05-0.10 μm.
In the present invention one preferred implementation, the described cold rolled annealed 7-10 of being divided into interval is carried out, and specifically can divide
For 2-3 preheating interval, 3-4 heating interval, and 2-3 insulation interval, the temperature that wherein said preheating is interval
Degree can be 950-1150 DEG C, and the temperature of described heating interval can be 990-1250 DEG C, the temperature that described insulation is interval
Degree can be 950-1230 DEG C.Further, the temperature difference in each interval can be 20-65 DEG C.
In the present invention one preferred implementation, described cold rolled annealed after pickling be to use the acid of nitric acid+Fluohydric acid. nitration mixture
Wash technique.
In the present invention one preferred implementation, also include smooth step after pickling and before finishing cold rolled annealed
And smooth elongation percentage is 0.2-0.6% suddenly,.
Present invention also offers the above-mentioned manufacture method being applicable to produce the austenitic stainless steel of barrel of beer, it at least includes
Following steps: each raw material of described austenitic stainless steel is carried out steel processed, then the raw material base obtained is carried out heat successively
Roll, hot-roll annealing pickling, cold rolling, cold rolled annealed pickling and finishing, obtain described being applicable to and produce barrel of beer
Austenitic stainless steel；
Wherein, after steel processed, remove steel toe base processed, tail base and mixing base, use pars intermedia base to enter as raw material base
Row hot rolling；
The coiling process of cold rolling step uses 45g/m2Packing paper；
Cold rolled annealed is to decline 20 DEG C with the stainless cold rolled annealed temperature of RZ4 purposes, i.e. 950 DEG C-1250 DEG C, enters
Row continuous annealing.
In the above-mentioned methods, it is preferable that hot-roll annealing is to carry out continuous annealing, after hot-roll annealing at 950-1200 DEG C
Pickling is to use nitric acid+Fluohydric acid. nitration mixture acid cleaning process.
In the above-mentioned methods, it is preferable that after hot-roll annealing, use air cooling.Air cooling can reduce due to water-cooled residual
The aberration that water wave trace causes, it is to avoid chromatic aberration defect.
In the above-mentioned methods, it is preferable that described cold rolling be use Sendzimir mill group, wherein, under cold rolling stagnation pressure
Rate is 40-60%, and the passage before end 2 passage of described cold mill complex uses 120 mesh to grind working roll, its roughness
Ra is 0.1-0.3 μm；End 2 passage of described cold mill complex uses 240 mesh to grind working roll, and its roughness Ra is
0.05-0.10μm。
In the above-mentioned methods, it is preferable that the described cold rolled annealed 7-10 of being divided into interval is carried out, and specifically can be divided into 2-3
Individual preheating interval, 3-4 heating interval, and 2-3 insulation interval, wherein said preheat interval temperature permissible
For 950-1150 DEG C, the temperature of described heating interval can be 990-1250 DEG C, and the temperature in described insulation interval is permissible
For 950-1230 DEG C.Further, the temperature difference in each interval can be 20-65 DEG C.
In the above-mentioned methods, it is preferable that the pickling after cold rolled annealed is to use nitric acid+Fluohydric acid. nitration mixture acid cleaning process.
Detailed description of the invention according to the present invention, it is preferable that above-mentioned manufacture method after cold rolled annealed pickling and essence
Also include smooth step before whole, and smooth elongation percentage is 0.2-0.6%.
Use the austenite stainless steel plate band that obtains of above-mentioned manufacture method that the present invention provides, have surface gloss good,
The advantages such as surface no color differnece, pollution-free and tensile property are excellent, even and if after overpickling or passivation, it still is able to
Keeping above-mentioned excellent properties, this austenite stainless steel plate band is applicable to produce barrel of beer.
In the present invention, by adjusting content and the content of other each trace element of Cu in steel raw material components processed,
The austenite stainless steel plate band that manufacture can be made to obtain has the advantages that tensile property is excellent, say, that improve product
Mechanical property, expansion forming property (Erichsen Test AEG-process), deep drawability (Deep Drawability
Test), plane anisotropy can (Earing ratio test), combined shaping performance (conical cup test), timeliness
Cracking property (timeliness cracking limit Drawing ratio), reaming performance (Hole expanding test), bending property
The comprehensive evaluation indexs such as (Bending test), forming limit (Forming limit diagams), and reduce
The MD30 (weighing the index of product mechanical performance, MD30 is the least, and processing characteristics is the best) of product, and then improve
(the extension property El of product is 55-62% to the extension property El of product, and conventional RZ4 purposes is stainless prolongs
Stretching performance El is 50-55%), (tensile strength Ts of product is 620N/mm to tensile strength Ts2Left and right, and normal
Rule stainless tensile strength Ts of RZ4 purposes is at 650N/mm2Above), the yield strength Ys (surrender of product
Intensity Ys is 280N/mm2Left and right, and conventional stainless yield strength Ys of RZ4 purposes is 300-350
N/mm2), (hardness Hv of product is at 175N/mm for hardness Hv2Hereinafter, and conventional RZ4 purposes is stainless
Hardness Hv is 180N/mm2Left and right) etc. the mechanical property of material and the processability index of product.
Meanwhile, by the pars intermedia base of employing removal steel toe base processed, tail base and mixing base as raw material base, its surface product
Of fine quality good and inclusion content is relatively low, it is possible to reduce the existence of rigidity field trash processed, it is to avoid product is during deep-draw
Due to metal flow and the inhomogeneities of deformation, when there are harder field trash in matrix, the deformation of this field trash is not
Can be consistent with the deformation of parent metal, the seriality of matrix is destroyed, and causes stress being mingled with a concentration, gradually edge
It is mingled with face to separate with body, forms cracking phenomena.
Additionally, pass through in the coiling process of cold rolling step by using the 45g/m that thickness is thicker2Packing paper (adopt by routine
Packing paper be generally 28g/m2、30g/m2、32g/m2Or 35g/m2Thickness), and by cold rolled annealed temperature
Degree reduces by 20 DEG C, it is possible to reduces pickling, the surface defect of passivation generation, improves surface quality, the product therefore obtained
Product are suitable for surface acid-washing, passivation.The present invention uses the preferable 45g/m of oil absorption when cold rolling is delayed and batched2Packing paper,
Decrease and do not blot due to ROLLING OIL only, cause the oil mark of product surface to produce；And after hot-roll annealing, pass through
Air cooling reduces due to the aberration that causes of water wave trace of water-cooled residual, it is to avoid chromatic aberration defect；Additionally, cold rolled annealed
During, by reducing annealing temperature, to improve the surface quality of product, described reduction annealing temperature refers to moving back
During fire, annealing temperature is RZ4 purposes rustless steel (RZ4 purposes rustless steel refers to the rustless steel of flow-through application on market)
On the basis of decline 20 DEG C again and carry out continuous annealing, and according to the thickness (0.25mm-5.0mm) of required product,
Cold rolled annealed temperature controls the scope (during product thickness the thickest annealing, temperature is the highest) at 950-1250 DEG C carry out continuously
Annealing.
On the other hand, present invention also offers the above-mentioned austenitic stainless steel producing barrel of beer that is applicable to and produce medicated beer
Application in Tong.
The present invention is 0.4%-1.0% by controlling the Cu content in steel raw material components processed, is preferably controlled to 0.5%；And
And using the pars intermedia base removing steel toe base processed, tail base and mixing base as raw material base, its surface quality is excellent and is mingled with
Thing content is relatively low, by increasing capacitance it is possible to increase the tensile property of product；Simultaneously by using thickness in the coiling process of cold rolling step
Thicker 45g/m2Packing paper, it is possible to reduce the milling train defect such as the oil mark of cold-rolled steel sheet belt surface, greasy dirt dye, Jin Erneng
Enough increase the surface effect of acid wash passivation；Additionally, cold rolled annealed by annealing temperature is reduced by 20 DEG C, it is possible to eliminate
Aberration, increase acid wash passivation effect；Finally make to manufacture the austenitic stainless steel (strip) obtained and be particularly suited for raw
Produce barrel of beer.
Accompanying drawing explanation
Fig. 1 carries out the surface condition after pickling, passivation for the routine 304 austenite 2B surface providing comparative example 1
Figure；
Fig. 2 a, Fig. 2 b and Fig. 2 c produce for the austenitic stainless steel that embodiment 1 offer is applicable to produce barrel of beer
Product carry out the surface condition figure after pickling, passivation.
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and beneficial effect are more clearly understood from, the existing skill to the present invention
Art scheme carries out described further below, but it is not intended that to the present invention can the restriction of practical range.
Embodiment 1
Present embodiments provide a kind of austenitic stainless steel being applicable to produce barrel of beer, with described austenitic stainless steel
On the basis of gross weight, its raw material composition include: carbon 0.04%, silicon 0.6%, manganese 1.11%, phosphorus less than 0.045%,
Sulfur less than 0.030%, chromium 18.0%, nickel 8.01%, copper 0.5% and iron surplus.
This austenitic stainless steel manufactures by the following method and obtains: carried out by each raw material of described austenitic stainless steel
Steel processed, then carries out hot rolling, hot-roll annealing pickling, cold rolling successively by the raw material base obtained, cold rolled annealed pickling, flat
Whole and finishing, obtains the described austenitic stainless steel being applicable to produce barrel of beer；
Wherein, after steel processed, remove steel toe base processed, tail base and mixing base, use pars intermedia base to enter as raw material base
Row hot rolling；
Hot-roll annealing is to carry out continuous annealing at 950-1200 DEG C, and the pickling after hot-roll annealing is to use nitric acid+Fluohydric acid.
Nitration mixture acid cleaning process；
Using air cooling after hot-roll annealing, air cooling can reduce the aberration caused due to the water wave trace of water-cooled residual, it is to avoid
Chromatic aberration defect；
Described cold rolling be use Sendzimir mill group, wherein, cold rolling total reduction is 40%, described cold mill complex
End 2 passage before passage use 120 mesh grind working rolls, its roughness Ra is 0.1 μm；Described cold mill complex
End 2 passage use 240 mesh grind working rolls, its roughness Ra is 0.05 μm；
The coiling process of cold rolling step uses 45g/m2Packing paper；
Cold rolled annealed is to decline 20 DEG C with the stainless cold rolled annealed temperature of RZ4 purposes to carry out continuous annealing, this enforcement
Prepared by example is the strip of 1.2mm thickness, the cold rolled annealed temperature of conventional RZ4 purposes 1.2mm thickness stainless steel sheet strip
Degree is 1150 DEG C, and the present embodiment is reduced to 1130 DEG C, and is divided into 7 intervals to carry out continuous annealing:
The temperature in the first preheating interval is 970 DEG C, and the temperature in the second preheating interval is 1020 DEG C, the first heating interval
Temperature is 1070 DEG C, and the temperature of the second heating interval is 1100 DEG C, and the temperature of the 3rd heating interval is 1130 DEG C, the
The temperature in one insulation interval is 1080 DEG C, and the temperature in the second insulation interval is 1030 DEG C；
Described cold rolled annealed after pickling be use nitric acid+Fluohydric acid. nitration mixture acid cleaning process；
Described smooth elongation percentage is 0.5%.
The present embodiment is 0.5% by controlling the Cu content in steel raw material components processed；And use removal steel toe base processed,
The pars intermedia base of tail base and mixing base is as raw material base, and its surface quality is excellent and inclusion content is relatively low, by increasing capacitance it is possible to increase
The tensile property of product；And after hot-roll annealing, reduced owing to the water wave trace of water-cooled residual causes by air cooling
Aberration, by increasing capacitance it is possible to increase acid wash passivation effect, avoid chromatic aberration defect；Simultaneously by adopting in the coiling process of cold rolling step
With the 45g/m that thickness is thicker2Packing paper, it is possible to reduce the milling train defect such as the oil mark of cold-rolled steel sheet belt surface, greasy dirt dye,
And then the surface effect of acid wash passivation can be increased；Additionally, cold rolled annealed by annealing temperature is reduced by 20 DEG C, energy
Enough color difference eliminatings (i.e. reaching the effect of no color differnece), increase acid wash passivation effect；Finally make to manufacture the Ovshinsky obtained
Even if body stainless steel sheet strip is after stretched, pickling, passivation, still there is excellent properties, be particularly suited for producing
Barrel of beer.
Embodiment 2
Present embodiments provide a kind of austenitic stainless steel being applicable to produce barrel of beer, with described austenitic stainless steel
On the basis of gross weight, its raw material composition include: carbon 0.045%, silicon 0.65%, manganese 1.18%, phosphorus less than 0.045%,
Sulfur less than 0.030%, chromium 18.5%, nickel 8.1%, copper 0.5% and iron surplus.
The manufacture method of this austenitic stainless steel is substantially the same manner as Example 1, and difference is cold rolled annealed step
Suddenly, prepared by the present embodiment is the strip of 1.5mm thickness, conventional RZ4 purposes 1.5mm thickness stainless steel sheet strip
Cold rolled annealed temperature is 1180 DEG C, and the present embodiment is reduced to 1160 DEG C, and is divided into 10 intervals to carry out continuous annealing:
First temperature preheating interval is 950 DEG C, and the temperature in the second preheating interval is 990 DEG C, the 3rd preheating interval
Temperature is 1030 DEG C, and the temperature of the first heating interval is 1070 DEG C, and the temperature of the second heating interval is 1100 DEG C, the
The temperature of three heating intervals is 1130 DEG C, and the temperature of the 4th heating interval is 1160 DEG C, the temperature that the first insulation is interval
Being 1120 DEG C, the temperature in the second insulation interval is 1080 DEG C, and the temperature in the 3rd insulation interval is 1040 DEG C.
Comparative example 1
This comparative example provides a kind of austenitic stainless steel, and on the basis of the gross weight of described austenitic stainless steel, it is former
Material composition include: carbon 0.08%, silicon 0.65%, manganese 2.2%, phosphorus less than 0.045%, sulfur less than 0.030%, chromium 17.5%,
Nickel 8.1%, copper 0.35% and iron surplus.
This austenitic stainless steel manufactures by the following method and obtains: carried out by each raw material of described austenitic stainless steel
Steel processed, then carries out hot rolling, hot-roll annealing pickling, cold rolling successively by the raw material base obtained, cold rolled annealed pickling, flat
Whole and finishing, obtains described austenitic stainless steel；
Wherein, after steel processed, remove steel toe base processed, tail base and mixing base, use pars intermedia base to enter as raw material base
Row hot rolling；
Hot-roll annealing is to carry out continuous annealing at 950-1200 DEG C, and the pickling after hot-roll annealing is to use nitric acid+Fluohydric acid.
Nitration mixture acid cleaning process；
Water-cooled is used after hot-roll annealing；
Described cold rolling be use Sendzimir mill group, wherein, cold rolling total reduction is 40%, described cold mill complex
End 2 passage before passage use 120 mesh grind working rolls, its roughness Ra is 0.1 μm；Described cold mill complex
End 2 passage use 240 mesh grind working rolls, its roughness Ra is 0.05 μm；
The coiling process of cold rolling step uses 35g/m2Packing paper；
This comparative example is the strip manufacturing 1.2mm thickness, cold rolled annealed is divided into 3 intervals to carry out continuous annealing, in advance
Temperature between hot-zone is 1100 DEG C, and the temperature of heating interval is 1150 DEG C, and the temperature in insulation interval is 1100 DEG C；
Described cold rolled annealed after pickling be use nitric acid+Fluohydric acid. nitration mixture acid cleaning process；
Described smooth elongation percentage is 0.5%.
Comparative example 2
This comparative example provides a kind of austenitic stainless steel, and on the basis of the gross weight of described austenitic stainless steel, it is former
Material composition include: carbon 0.04%, silicon 0.65%, manganese 2.2%, phosphorus less than 0.045%, sulfur less than 0.030%, chromium 17.5%,
Nickel 7.5%, copper 0.3% and iron surplus.
This austenitic stainless steel manufactures by the following method and obtains: carried out by each raw material of described austenitic stainless steel
Steel processed, then carries out hot rolling, hot-roll annealing pickling, cold rolling successively by the raw material base obtained, cold rolled annealed pickling, flat
Whole and finishing, obtains described austenitic stainless steel；
Wherein, after steel processed, remove steel toe base processed, tail base and mixing base, use pars intermedia base to enter as raw material base
Row hot rolling；
Hot-roll annealing is to carry out continuous annealing at 950-1200 DEG C, and the pickling after hot-roll annealing is to use nitric acid+Fluohydric acid.
Nitration mixture acid cleaning process；
Air cooling is used after hot-roll annealing；
Described cold rolling be use Sendzimir mill group, wherein, cold rolling total reduction is 40%, described cold mill complex
End 2 passage before passage use 120 mesh grind working rolls, its roughness Ra is 0.1 μm；Described cold mill complex
End 2 passage use 240 mesh grind working rolls, its roughness Ra is 0.05 μm；
The coiling process of cold rolling step uses 45g/m2Packing paper；
This comparative example is the strip manufacturing 1.5mm thickness, cold rolled annealed is divided into 3 intervals to carry out continuous annealing, in advance
Temperature between hot-zone is 1130 DEG C, and the temperature of heating interval is 1180 DEG C, and the temperature in insulation interval is 1130 DEG C；
Described cold rolled annealed after pickling be use nitric acid+Fluohydric acid. nitration mixture acid cleaning process；
Described smooth elongation percentage is 0.5%.
Test case
The stainless steel product provided embodiment 1,2 and comparative example 1,2 below carries out mechanical property contrast and superficiality
Can contrast.
1. the evaluation procedure of the mechanical property of embodiment 1,2 and comparative example 1,2:
(1) the random cold-rolled products to finishing operation are rolled up and are respectively taken " 500mm × overall with " sample, respectively on often volume
Test print carry out expansion formability test (Erichsen Test AEG-process), deep drawability test (Deep
Drawability Test) and combined shaping performance test (conical cup test), often volume result of the test is averaged；
Take the average results of multiple test volume again as total result of the test.
Result of the test is as shown in table 1, and as can be seen from Table 1, what the embodiment of the present invention 1,2 provided is applicable to produce
The test of the expansion forming performance test of the austenite stainless product made from steel of barrel of beer, deep drawability and the examination of combined shaping performance
Test result and be superior to the stainless steel product that comparative example 1,2 provides.
Table 1
| Project | Expansion forming property | Deep drawability is tested | Combined shaping performance |
| Embodiment 1 | 13.51 | 2.04 | 27.08 |
| Embodiment 2 | 13.50 | 2.04 | 27.07 |
| Comparative example 1 | 13.39 | 2.04 | 27.23 |
| Comparative example 2 | 13.40 | 2.04 | 27.22 |
| Comparing result | ↑0.10-0.12 | - | ↓0.14-0.16 |
(2) at random cold-rolled products to finishing operation are rolled up and are respectively taken that " " sample, respectively on often volume for 500mm × overall with
Test print carry out extension property El, tensile strength Ts, yield strength Ys and hardness Hv test, often roll up examination
Test results averaged；Take the average results of multiple test volume again as total result of the test.
Result of the test is as shown in table 2, and as can be seen from Table 2, what the embodiment of the present invention 1,2 provided is applicable to produce
Extension property El, tensile strength Ts, yield strength Ys and hardness Hv of the austenite stainless product made from steel of barrel of beer
It is superior to the stainless steel product that comparative example 1,2 provides.
Table 2
(3) use the stainless steel product that embodiment 1 and comparative example 1 provide as barrel of beer respectively, find embodiment
The cracking rate of stainless steel product be 0.1%, and comparative example up to 5～7%.Wherein, the product of cracking rate=cracking
The product quantity that quantity ÷ uses altogether.
2. surface property comparative evaluation's process of embodiment 1 and comparative example 1:
The stainless steel product provided embodiment 1 and comparative example 1 respectively carries out pickling, passivation, pickling therein be
Placing 2 hours in nitric acid+Fluohydric acid. nitration mixture groove, passivation is to use nitric acid to be passivated 2 hours, observes surface condition afterwards.
By Fig. 1, Fig. 2 a, Fig. 2 b and Fig. 2 c it can be seen that from gloss and surface defect, comparative example 1 is carried
After the routine 304 austenite 2B surface of confession carries out pickling, passivation, product surface aberration is obvious, and the present invention implements
Example 1 provide be applicable to produce barrel of beer austenite stainless product made from steel carry out pickling, passivation after, product surface color
Soft and moist, the no color differnece in pool.
Claims (10)
1. it is applicable to produce an austenitic stainless steel for barrel of beer, with the gross weight of described austenitic stainless steel as base
Standard, its raw material composition includes: carbon less than 0.08%, silicon less than 1.0%, manganese less than 2%, phosphorus less than 0.045%, sulfur
Less than 0.030%, chromium 18-20%, nickel 8.0-10.5%, copper 0.4%-1.0% and iron surplus.
The austenitic stainless steel being applicable to produce barrel of beer the most according to claim 1, with described austenite not
On the basis of the gross weight of rust steel, in its raw material composition, the content of copper is 0.5%.
3. being applicable to described in claim 1 or 2 produces the manufacture method of the austenitic stainless steel of barrel of beer, its bag
Include following steps: each raw material of described austenitic stainless steel is carried out steel processed, is then carried out successively by the raw material base obtained
Hot rolling, hot-roll annealing pickling, cold rolling, cold rolled annealed pickling and finishing, obtain described being applicable to and produce medicated beer
The austenitic stainless steel of bucket；
Wherein, after steel processed, remove steel toe base processed, tail base and mixing base, use pars intermedia base to enter as raw material base
Row hot rolling；
The coiling process of cold rolling step uses 45g/m2Packing paper；
Cold rolled annealed is to decline 20 DEG C with the stainless cold rolled annealed temperature of RZ4 purposes, i.e. 950 DEG C-1250 DEG C, enters
Row continuous annealing.
Manufacture method the most according to claim 3, wherein, described hot-roll annealing is to carry out at 950-1200 DEG C
Continuous annealing, the pickling after hot-roll annealing is to use nitric acid+Fluohydric acid. nitration mixture acid cleaning process.
Manufacture method the most according to claim 3, wherein, uses air cooling after described hot-roll annealing.
Manufacture method the most according to claim 3, wherein, described cold rolling be use described cold rolling be employing two
Ten cold mill groups, wherein, cold rolling total reduction is 40-60%, the road before end 2 passage of described cold mill complex
Secondary use 120 mesh grinds working roll, and its roughness Ra is 0.1-0.3 μm；End 2 passage of described cold mill complex makes
Grinding working roll with 240 mesh, its roughness Ra is 0.05-0.10 μm.
Manufacture method the most according to claim 3, wherein, the described cold rolled annealed 7-10 of being divided into interval is carried out,
Including 2-3 preheating interval, 3-4 heating interval, and 2-3 insulation interval, wherein said preheat interval
Temperature is 950-1150 DEG C, and the temperature of described heating interval is 990-1250 DEG C, and the temperature in described insulation interval is
950-1230℃；Further, the temperature difference in each interval is 20-65 DEG C.
Manufacture method the most according to claim 3, wherein, described cold rolled annealed after pickling be use nitric acid+
Fluohydric acid. nitration mixture acid cleaning process.
Manufacture method the most according to claim 3, it also wraps after pickling and before finishing cold rolled annealed
Include smooth step, and smooth elongation percentage is 0.2-0.6%.
10. the austenitic stainless steel be applicable to production barrel of beer described in claim 1 or 2 is during producing barrel of beer
Application.
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| CN114150125A (en) * | 2021-12-16 | 2022-03-08 | 广东甬金金属科技有限公司 | Method for manufacturing 5-foot austenitic stainless steel of non-magnetic and non-color-difference beer barrel |
| CN114277319A (en) * | 2021-12-24 | 2022-04-05 | 浦项(张家港)不锈钢股份有限公司 | Preparation process of stainless steel with high nickel content, stainless steel and application |
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Address after: 215625 Yangtze River Metallurgical Industrial Park, Zhangjiagang City, Jiangsu Province Patentee after: Puxiang (Zhangjiagang) Stainless Steel Co., Ltd. Address before: 215625 Yangtze River Metallurgical Industrial Park, Zhangjiagang City, Jiangsu Province Patentee before: Puxiang Stainless Steel Co Ltd, Shangjiagang |