CN101704019B - Production method of grit-blasted surface stainless steel band - Google Patents
Production method of grit-blasted surface stainless steel band Download PDFInfo
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- CN101704019B CN101704019B CN2009102129957A CN200910212995A CN101704019B CN 101704019 B CN101704019 B CN 101704019B CN 2009102129957 A CN2009102129957 A CN 2009102129957A CN 200910212995 A CN200910212995 A CN 200910212995A CN 101704019 B CN101704019 B CN 101704019B
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Abstract
The invention relates to a production method of grit-blasted surface stainless steel bands, which is characterized in that the method comprises the following steps: manufacturing a precisely controlled grit-blasted work roll, carrying out steps of thermal refining, semi-finished product rolling, solution treatment, primary washing, finished product rolling and secondary washing and straightening and withdrawing and the like on the precisely controlled grit-blasted work roll. The grit-blasted surface stainless steel band produced by the method of the invention can improve product quality and production efficiency and can be widely used in the industries of electron, decoration, ironware and kitchen equipment and the like.
Description
Technical field
The present invention relates to the production method of stainless steel band, specifically, is the production method of surface for the grit-blasted surface stainless steel band of sandblast face.
Background technology
As everyone knows, stainless steel band because have exquisite appearance and good corrosion resistance gradually, be widely used in industries such as electronics, decoration, five metals and cooking apparatus.Traditional stainless steel band all is a shiny surface, though this shiny surface stainless steel band has above-mentioned advantage, easily is scratched.In order to address this problem, occurred in recent years carrying out the report that sandblast comes production sandblast face corrosion resistant plate (band) on corrosion resistant plate (band) surface.But because blasting craft is by the nozzle that moves back and forth sand grains to be sprayed on corrosion resistant plate (band), the intrafascicular heart of sand grains of nozzle ejection is more much better than than the energy at sand grains bundle edge, make corrosion resistant plate (band) go up the sand grains skewness of each point, therefore, the grit-blasted surface stainless steel band of Sheng Chaning is of low quality in this way.Again because blasting craft is by the nozzle that moves back and forth sand grains to be sprayed on corrosion resistant plate (band), the sand grains bundle of nozzle ejection is less, can only piecemeally carry out sandblast to the corrosion resistant plate (band) that cuts, can't realize the large tracts of land blasting treatment, production efficiency is lower.
Summary of the invention
The problem to be solved in the present invention provides a kind of production method of grit-blasted surface stainless steel band.The grit-blasted surface stainless steel band that adopts this method to produce, product quality and production efficiency are all higher.
For solving such scheme, take following technical scheme:
The production method of grit-blasted surface stainless steel band of the present invention may further comprise the steps successively:
(1) makes smart control sandblast working roll
Earlier operation roll of mill is processed, making its surface roughness is 0.15～0.20 μ m; With pressure-air sand grains is blown and beaten on the operation roll of mill surface again, made the operation roll of mill surface form the sand grains layer; Afterwards, utilize supersonic wave cleaning machine that the operation roll of mill that has the sand grains layer was cleaned 2～4 minutes, obtaining surface roughness is the essence control sandblast working roll of 1.5～4.0 μ m; Described sand grains is 30～60 purpose carborundum sand grains or stainless steel sand grains;
(2) essence control sandblast working roll is carried out modifier treatment
Essence is controlled the sandblast working roll to be contained on the cold-rolling mill, this cold-rolling mill of sandblast working roll is equipped with in utilization, under the rolling tensile force of the roll-force of 100～200KN and 5～55KN, with the long stainless steel band of the rolling 2000～4000m of 160～450m/ minute mill speed, make sand grains layer firm attachment at work roll surface, do not come off;
(3) semi-finished product are rolling
Choose the stainless steel band blank earlier, the thickness of this stainless steel band blank is 1.0～1.4mm;
Adopt cold-rolling mill then, under the rolling tensile force of the roll-force of 300～500KN and 5～80KN, with 60～350m/ minute mill speed, the stainless steel band blank that described 1.0～1.4mm is thick was rolled into the thick semi-finished product stainless steel band of 0.25～0.56mm;
(4) solution treatment
Make the semi-finished product stainless steel band pass through an annealing furnace earlier, and the semi-finished product stainless steel band in the annealing furnace is filled protective gas with 13～16m/ minute speed; Wherein, the temperature of described annealing furnace is 1080～1120 ℃; Afterwards, the semi-finished product stainless steel band after coming out of the stove is cooled off fast;
(5) once clean
To be 60～80 ℃ continuous cleaning by degreasing unit with 60～80m/ minute speed by a temperature through the semi-finished product stainless steel band of solution treatment, remove the grease of stainless steel band surface;
(6) finished product is rolling
Adopt cold-rolling mill earlier, will become the thick stainless steel band of 0.175～0.39mm through the semi-finished product rolling stainless steel band that once cleaned; Wherein, cold rolling mill work roller adopts the shiny surface working roll without blasting treatment;
Then, it is rolling to carry out following two passages again; Wherein:
When first passage was rolling, the working roll of cold-rolling mill adopted the essence control sandblast working roll through modifier treatment, and roll-force is that 300～500KN, rolling tensile force are that 5～80KN, mill speed are 60～350m/ minute;
When second passage was rolling, the working roll of cold-rolling mill adopted the essence control sandblast working roll without modifier treatment, and roll-force is that 100～200KN, rolling tensile force are that 5～55KN, mill speed are 160～450m/ minute;
Rolling through two passages, obtaining thickness is that 0.15～0.35mm, surface roughness are the finished product stainless steel band of 0.8～2.4 μ m;
(7) secondary cleaning
To be 60～80 ℃ continuous cleaning by degreasing unit with 50～90m/ minute speed by a temperature through the rolling stainless steel band of finished product, remove the grease of stainless steel band surface;
(8) straightening
Use stretch bending-straightening machine, under the tension force of 20～45KN, with 10～150m/ minute speed the stainless steel band through secondary cleaning is corrected, the unevenness that makes stainless steel band obtains grit-blasted surface stainless steel band less than 0.5mm.
Take such scheme, have the following advantages:
Because in production method of the present invention, work roll surface to used milling train has carried out blasting treatment, and blasting treatment is again to adopt compressed air that sand grains is blown and beaten on the operation roll of mill surface earlier, makes the operation roll of mill surface form the sand grains layer, and working roll is made smart control sandblast working roll.Essence being controlled the sandblast working roll is contained on the cold-rolling mill again, the cold-rolling mill of sandblast working roll is equipped with in utilization, under the rolling tensile force of the roll-force of 100～200KN and 5～55KN, with the long stainless steel band of the rolling 2000～4000m of 160～450m/ minute mill speed, make sand grains layer firm attachment at work roll surface, do not come off, essence control sandblast working roll is carried out modifier treatment.Make that the grains of sand layer of work roll surface is more even.Therefore, the grit-blasted surface stainless steel band that adopts the mill milling of this working roll to go out, even surface roughness, quality is higher.
Again because in production method of the present invention, the work roll surface of used milling train has been carried out blasting treatment, make the surface of working roll form one deck sand grains layer.With the milling train of this working roll that has a sand grains layer to rolling stainless steel band in, just make stainless steel band surface form the matsurface that adapts with the work roll surface roughness.So, stainless steel band is rolled, has realized large-area treatment the stainless steel band surface roughness by milling train with the working roll that has the sand grains layer.With can only piecemeally carry out grit-blasting treatment process in the background technology and compare the corrosion resistant plate (band) that cuts, improved production efficiency greatly.In addition, because in production method of the present invention, the work roll surface of used milling train is carried out blasting treatment, made the surface of working roll form one deck sand grains layer.With the milling train of this working roll that has a sand grains layer to rolling stainless steel band in, just make stainless steel band surface form the matsurface that adapts with the work roll surface roughness.Compare with background technology, not only simplified operation, also can reduce production costs.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail:
Embodiment one
Make smart control sandblast working roll earlier.
At first, adopt precision grinder that the operation roll of mill surface is processed, making its surface roughness is 0.15 μ m.Again working roll is the setting shape and is fixed in the sand-blasting machine, under the operation roll of mill rotating speed of 50m/min, utilize pressure 60 purpose sand grains to be blown and beaten on the operation roll of mill surface, make the operation roll of mill surface form the sand grains layer for the pressure-air of 0.65Mpa.Afterwards, utilize supersonic wave cleaning machine that the operation roll of mill that has the sand grains layer was cleaned 2 minutes, obtaining surface roughness is the essence control sandblast working roll of 1.5 μ m.Sand grains wherein is the carborundum sand grains.
Then, essence control sandblast working roll is carried out modifier treatment.
Essence is controlled the sandblast working roll to be contained on the cold-rolling mill, this cold-rolling mill of smart control sandblast working roll is equipped with in utilization, under the rolling tensile force of the roll-force of 100KN and 5KN, with the long stainless steel band of the rolling 2000m of 160m/ minute mill speed, make sand grains layer firm attachment at work roll surface, the sand grains layer is not come off.
Afterwards, it is rolling to carry out semi-finished product.
Choose the stainless steel band blank earlier, this stainless steel band blank is that thickness is the O6Cr19Ni10 stainless steel band blank of 1.0mm.
Adopt cold-rolling mill, under the rolling tensile force of the roll-force of 300KN and 5KN, with 60m/ minute mill speed, the stainless steel band blank that described 1.0mm is thick was rolled into the thick semi-finished product stainless steel band of 0.25mm.Wherein, used cold-rolling mill is 20 roller precise cold milling train groups.
Afterwards, carry out solution treatment.
Make the semi-finished product stainless steel band pass through an annealing furnace earlier, and the semi-finished product stainless steel band in the annealing furnace is filled protective gas with 13m/ minute speed.Wherein, the temperature of described annealing furnace is 1080 ℃, and described protective gas is a hydrogen.Then, the semi-finished product stainless steel band after coming out of the stove is cooled off fast.
Afterwards, once clean.
To be 60 ℃ continuous cleaning by degreasing unit with 60m/ minute speed by a temperature through the semi-finished product stainless steel band of solution treatment, remove the grease of semi-finished product stainless steel band surface.
Afterwards, it is rolling to carry out finished product.
Adopt 20 roller precise cold milling train groups earlier, will become the thick stainless steel band of 0.175～0.39mm through the semi-finished product rolling stainless steel band that once cleaned.Wherein, the working roll on the 20 roller precise cold milling train groups adopts the shiny surface working roll without blasting treatment.
It is rolling to carry out two passages again.Wherein:
When first passage was rolling, the working roll of cold rolling unit adopted the essence control sandblast working roll through modifier treatment, and roll-force is that 300KN, rolling tensile force are that 5KN, mill speed are 60m/ minute.
When second passage was rolling, the working roll of cold rolling unit adopted the essence control sandblast working roll without modifier treatment, and roll-force is that 100KN, rolling tensile force are that 5KN, mill speed are 160m/ minute.
Rolling through two passages, obtaining thickness is that 0.15mm, surface roughness are the finished product stainless steel band of 0.8 μ m.
Afterwards, carry out secondary cleaning.
To be 60 ℃ continuous cleaning by degreasing unit with 50m/ minute speed by a temperature through the rolling stainless steel band of finished product, remove the grease of stainless steel band surface.
At last, carry out straightening.
Use the accurate stretch bending-straightening machine of 23 rollers, under the tension force of 20KN, with 10m/ minute speed the stainless steel band through secondary cleaning is corrected, the unevenness that makes stainless steel band obtains grit-blasted surface stainless steel band less than 0.5mm.
Embodiment two
Make smart control sandblast working roll earlier.
At first, adopt precision grinder that the operation roll of mill surface is processed, making its surface roughness is 0.18 μ m.Again working roll is the setting shape and is fixed in the sand-blasting machine, under the operation roll of mill rotating speed of 50m/min, utilize pressure 45 purpose sand grains to be blown and beaten on the operation roll of mill surface, make the operation roll of mill surface form the sand grains layer for the pressure-air of 0.65Mpa.Afterwards, utilize supersonic wave cleaning machine that the operation roll of mill that has the sand grains layer was cleaned 3 minutes, obtaining surface roughness is the essence control sandblast working roll of 2.9 μ m.Sand grains wherein is the stainless steel sand grains.
Then, essence control sandblast working roll is carried out modifier treatment.
Essence is controlled the sandblast working roll to be contained on the cold-rolling mill, this cold-rolling mill of smart control sandblast working roll is equipped with in utilization, under the rolling tensile force of the roll-force of 150KN and 50KN, with the long stainless steel band of the rolling 3000m of 300m/ minute mill speed, make sand grains layer firm attachment at work roll surface, the sand grains layer is not come off.
Afterwards, it is rolling to carry out semi-finished product.
Choose the stainless steel band blank earlier, this stainless steel band blank is that thickness is the O6Cr19Ni10 stainless steel band blank of 1.2mm.
Adopt cold-rolling mill, under the rolling tensile force of the roll-force of 400KN and 40KN, with 205m/ minute mill speed, the stainless steel band blank that described 1.2mm is thick was rolled into the thick semi-finished product stainless steel band of 0.4mm.Wherein, used cold-rolling mill is 20 roller precise cold milling train groups.
Afterwards, carry out solution treatment.
Make the semi-finished product stainless steel band pass through an annealing furnace earlier, and the semi-finished product stainless steel band in the annealing furnace is filled protective gas with 15m/ minute speed.Wherein, the temperature of described annealing furnace is 1100 ℃, and described protective gas is the ammonia through decomposing.Then, the semi-finished product stainless steel band after coming out of the stove is cooled off fast.
Afterwards, once clean.
To be 70 ℃ continuous cleaning by degreasing unit with 70m/ minute speed by a temperature through the semi-finished product stainless steel band of solution treatment, remove the grease of stainless steel band surface.
Afterwards, it is rolling to carry out finished product.
Adopt 20 roller precise cold milling train groups earlier, will become the thick stainless steel band of 0.29mm through the semi-finished product rolling stainless steel band that once cleaned.Wherein, the working roll on the 20 roller precise cold milling train groups adopts the shiny surface working roll without blasting treatment.
It is rolling to carry out two passages again.Wherein:
When first passage was rolling, the working roll of cold rolling unit adopted the essence control sandblast working roll through modifier treatment, and roll-force is that 400KN, rolling tensile force are that 40KN, mill speed are 205m/ minute.
When second passage was rolling, the working roll of cold rolling unit adopted the essence control sandblast working roll without modifier treatment, and roll-force is that 150KN, rolling tensile force are that 30KN, mill speed are 300m/ minute.
Rolling through two passages, obtaining thickness is that 0.25mm, surface roughness are the finished product stainless steel band of 1.8 μ m.
Afterwards, carry out secondary cleaning.
To be 70 ℃ continuous cleaning by degreasing unit with 70m/ minute speed by a temperature through the rolling stainless steel band of finished product, remove the grease of stainless steel band surface.
At last, carry out straightening.
Use the accurate stretch bending-straightening machine of 23 rollers, under the tension force of 32KN, with 45m/ minute speed the stainless steel band through secondary cleaning is corrected, the unevenness that makes stainless steel band obtains grit-blasted surface stainless steel band less than 0.5mm.
Embodiment three
Make smart control sandblast working roll earlier.
At first, adopt precision grinder that the operation roll of mill surface is processed, making its surface roughness is 0.20 μ m.Again working roll is the setting shape and is fixed in the sand-blasting machine, under the operation roll of mill rotating speed of 50m/min, utilize pressure 30 purpose sand grains to be blown and beaten on the operation roll of mill surface, make the operation roll of mill surface form the sand grains layer for the pressure-air of 0.65Mpa.Afterwards, utilize supersonic wave cleaning machine that the operation roll of mill that has the sand grains layer was cleaned 4 minutes, obtaining surface roughness is the essence control sandblast working roll of 4.0 μ m.Sand grains wherein is the stainless steel sand grains.
Then, essence control sandblast working roll is carried out modifier treatment.
Essence is controlled the sandblast working roll to be contained on the cold-rolling mill, this cold-rolling mill of smart control sandblast working roll is equipped with in utilization, under the rolling tensile force of the roll-force of 200KN and 55KN, with the long stainless steel band of the rolling 4000m of 450m/ minute mill speed, make sand grains layer firm attachment at work roll surface, the sand grains layer is not come off.
Afterwards, it is rolling to carry out semi-finished product.
Choose the stainless steel band blank earlier, this stainless steel band blank is that thickness is the O6Cr19Ni10 stainless steel band blank of 1.4mm.
Adopt cold-rolling mill, under the rolling tensile force of the roll-force of 500KN and 80KN, with 350m/ minute mill speed, the stainless steel band blank that described 1.4mm is thick was rolled into the thick semi-finished product stainless steel band of 0.56mm.Wherein, used cold-rolling mill is 20 roller precise cold milling train groups.
Afterwards, carry out solution treatment.
Make the semi-finished product stainless steel band pass through an annealing furnace earlier, and the semi-finished product stainless steel band in the annealing furnace is filled protective gas with 16m/ minute speed.Wherein, the temperature of described annealing furnace is 1120 ℃, and described protective gas is the ammonia through decomposing.Then, the semi-finished product stainless steel band after coming out of the stove is cooled off fast.
Afterwards, once clean.
To be 80 ℃ continuous cleaning by degreasing unit with 80m/ minute speed by a temperature through the semi-finished product stainless steel band of solution treatment, remove the grease of stainless steel band surface.
Afterwards, it is rolling to carry out finished product.
Adopt 20 roller precise cold milling train groups earlier, will become the thick stainless steel band of 0.39mm through the semi-finished product rolling stainless steel band that once cleaned.Wherein, the working roll on the 20 roller precise cold milling train groups adopts the shiny surface working roll without blasting treatment.
It is rolling to carry out two passages again.Wherein:
When first passage was rolling, the working roll of cold rolling unit adopted the essence control sandblast working roll through modifier treatment, and roll-force is that 500KN, rolling tensile force are that 80KN, mill speed are 350m/ minute.
When second passage was rolling, the working roll of cold rolling unit adopted the essence control sandblast working roll without modifier treatment, and roll-force is that 200KN, rolling tensile force are that 55KN, mill speed are 450m/ minute.
Rolling through two passages, obtaining thickness is that 0.35mm, surface roughness are the finished product stainless steel band of 2.4 μ m.
Afterwards, carry out secondary cleaning.
To be 80 ℃ continuous cleaning by degreasing unit with 90m/ minute speed by a temperature through the rolling stainless steel band of finished product, remove the grease of stainless steel band surface.
At last, carry out straightening.
Use the accurate stretch bending-straightening machine of 23 rollers, under the tension force of 45KN, with 150m/ minute speed the stainless steel band through secondary cleaning is corrected, the unevenness that makes stainless steel band obtains grit-blasted surface stainless steel band less than 0.5mm.
Claims (6)
1. the production method of grit-blasted surface stainless steel band is characterized in that may further comprise the steps successively:
(1) makes smart control sandblast working roll
Earlier operation roll of mill is processed, making its surface roughness is 0.15～0.20 μ m; With pressure-air sand grains is blown and beaten on the operation roll of mill surface again, made the operation roll of mill surface form the sand grains layer; Afterwards, utilize supersonic wave cleaning machine that the operation roll of mill that has the sand grains layer was cleaned 2～4 minutes, obtaining surface roughness is the essence control sandblast working roll of 1.5～4.0 μ m; Described sand grains is 30～60 purpose carborundum sand grains or stainless steel sand grains;
(2) essence control sandblast working roll is carried out modifier treatment
Essence is controlled the sandblast working roll to be contained on the cold-rolling mill, this cold-rolling mill of sandblast working roll is equipped with in utilization, under the rolling tensile force of the roll-force of 100～200KN and 5～55KN, with the long stainless steel band of the rolling 2000～4000m of 160～450m/ minute mill speed, make sand grains layer firm attachment at work roll surface, do not come off;
(3) semi-finished product are rolling
Choose the stainless steel band blank earlier, the thickness of this stainless steel band blank is 1.0～1.4mm;
Adopt cold-rolling mill then, under the rolling tensile force of the roll-force of 300～500KN and 5～80KN, with 60～350m/ minute mill speed, the stainless steel band blank that described 1.0～1.4mm is thick was rolled into the thick semi-finished product stainless steel band of 0.25～0.56mm;
(4) solution treatment
Make the semi-finished product stainless steel band pass through an annealing furnace earlier, and the semi-finished product stainless steel band in the annealing furnace is filled protective gas with 13～16m/ minute speed; Wherein, the temperature of described annealing furnace is 1080～1120 ℃; Afterwards, the semi-finished product stainless steel band after coming out of the stove is cooled off fast;
(5) once clean
To be 60～80 ℃ continuous cleaning by degreasing unit with 60～80m/ minute speed by a temperature through the semi-finished product stainless steel band of solution treatment, remove the grease of stainless steel band surface;
(6) finished product is rolling
Adopt cold-rolling mill earlier, will become the thick stainless steel band of 0.175～0.39mm through the semi-finished product rolling stainless steel band that once cleaned; Wherein, cold rolling mill work roller adopts the shiny surface working roll without blasting treatment;
Then, it is rolling to carry out following two passages again; Wherein:
When first passage was rolling, the working roll of cold-rolling mill adopted the essence control sandblast working roll through modifier treatment, and roll-force is that 300～500KN, rolling tensile force are that 5～80KN, mill speed are 60～350m/ minute;
When second passage was rolling, the working roll of cold-rolling mill adopted the essence control sandblast working roll without modifier treatment, and roll-force is that 100～200KN, rolling tensile force are that 5～55KN, mill speed are 160～450m/ minute;
Rolling through two passages, obtaining thickness is that 0.15～0.35mm, surface roughness are the finished product stainless steel band of 0.8～2.4 μ m;
(7) secondary cleaning
To be 60～80 ℃ continuous cleaning by degreasing unit with 50～90m/ minute speed by a temperature through the rolling stainless steel band of finished product, remove the grease of stainless steel band surface;
(8) straightening
Use stretch bending-straightening machine, under the tension force of 20～45KN, with 10～150m/ minute speed the stainless steel band through secondary cleaning is corrected, the unevenness that makes stainless steel band obtains grit-blasted surface stainless steel band less than 0.5mm.
2. the production method of grit-blasted surface stainless steel band according to claim 1 is characterized in that the rolling used cold-rolling mill of semi-finished product is 20 roller precise cold milling train groups.
3. the production method of grit-blasted surface stainless steel band according to claim 1 is characterized in that the rolling used cold-rolling mill of finished product is 20 roller precise cold milling train groups.
4. the production method of grit-blasted surface stainless steel band according to claim 1 is characterized in that the used stretch bending-straightening machine of straightening is the accurate stretch bending-straightening machines of 23 rollers.
5. the production method of grit-blasted surface stainless steel band according to claim 1 is characterized in that described protective gas is a hydrogen.
6. the production method of grit-blasted surface stainless steel band according to claim 1 is characterized in that described protective gas is the ammonia through decomposing.
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| CN2009102129957A CN101704019B (en) | 2009-11-13 | 2009-11-13 | Production method of grit-blasted surface stainless steel band |
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| CN2009102129957A CN101704019B (en) | 2009-11-13 | 2009-11-13 | Production method of grit-blasted surface stainless steel band |
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| CN101704019B true CN101704019B (en) | 2011-06-01 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869910A (en) * | 2010-06-04 | 2010-10-27 | 山东泰山建能机械集团有限公司 | Method for machining special surface of cold rolled stainless steel band |
| CN102107350A (en) * | 2010-11-13 | 2011-06-29 | 无锡华生精密材料股份有限公司 | Method for producing precision wire-drawing surface stainless steel bands |
| CN101979170B (en) * | 2010-11-19 | 2012-01-04 | 无锡嘉联不锈钢有限公司 | Method for producing stainless steel belt of glasses frame |
| CN102943163A (en) * | 2012-11-14 | 2013-02-27 | 无锡市光源不锈钢制品有限公司 | Stainless steel strip with frosted layer |
| CN102942011A (en) * | 2012-11-14 | 2013-02-27 | 无锡市光源不锈钢制品有限公司 | Stainless steel conveyor belt |
| CN103350110B (en) * | 2013-03-26 | 2015-05-27 | 江苏甬金金属科技有限公司 | Method for manufacturing austenitic stainless steel band with smooth and bright surface |
| CN103934300A (en) * | 2014-03-24 | 2014-07-23 | 无锡宝顺不锈钢有限公司 | Production method of stainless steel belt with sandblast surface for electronic circuit board |
| CN104998906A (en) * | 2015-06-17 | 2015-10-28 | 铜陵市大明玛钢有限责任公司 | Surface washing method for forged steel cold rolling roller |
| CN106623418B (en) * | 2016-12-14 | 2018-09-21 | 无锡华生精密材料股份有限公司 | The cold rolling production method of imitation laser frosted face stainless steel band |
| CN109332378A (en) * | 2018-08-31 | 2019-02-15 | 山西太钢不锈钢精密带钢有限公司 | Accurate stainless steel special surface rolling process |
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