CN105855291A - Method for controlling surface micro-pit defect of stainless steel sheet and strip during cold-tandem rolling process - Google Patents
Method for controlling surface micro-pit defect of stainless steel sheet and strip during cold-tandem rolling process Download PDFInfo
- Publication number
- CN105855291A CN105855291A CN201610350532.7A CN201610350532A CN105855291A CN 105855291 A CN105855291 A CN 105855291A CN 201610350532 A CN201610350532 A CN 201610350532A CN 105855291 A CN105855291 A CN 105855291A
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- stainless steel
- steel sheet
- rolling process
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- strip
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/10—Compression, e.g. longitudinal compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/10—Roughness of roll surface
Abstract
The invention provides a method for controlling a surface micro-pit defect of a stainless steel sheet and strip during a cold-tandem rolling process. The method specifically comprises the steps of preparing a stainless steel sheet and strip with the thickness being 3 to 5 mm and the width being 1,000 to 1,450 mm, and adopting a 5-stand cold-tandem rolling process to prepare a stainless steel sheet and strip with the thickness being 0.6 to 1 mm through 5-pass rolling, wherein the parameter control range of the cold-tandem rolling process is characterized in that the roll surface roughness ranges from 0.5 [mu]m to 0.7 [mu]m; each pass reduction ratio ranges from 23 percent to 31 percent; the final stand rolling speed ranges from 600 m/min to 1,000 m/min; the front tension ranges from 147 kN to 403 kN, and the back tension ranges from 57 kN to 403 kN; the emulsified liquid temperature when in first pass rolling ranges from 62 DEG C to 64 DEG C, and the emulsified liquid temperature when in rest 2 to 5-pass rolling ranges from 54 DEG C to 57 DEG C; and the emulsified liquid mass concentration when in first pass rolling ranges from 5 percent to 6 percent, and the emulsified liquid mass concentration when in rest 2 to 5-pass rolling ranges from 3 percent to 4 percent. The method provided by the invention can be used for controlling the micro-pit defect rate of the stainless steel sheet and strip to be less than 9 percent, and the panel glossiness of the sheet and strip is favorable.
Description
Technical field
The present invention relates to technical field of steel rolling, be specifically related to stainless steel sheet strip cold continuous rolling process surface micro-pit defects controlling
Method.
Background technology
Owing to stainless resistance of deformation is big, current cold-rolling stainless steel strip many employings 20 roller mill or many roll reversing rollers
Produce, but 20 roller mills or multi-roll mill produce the inefficient of stainless steel sheet strip, relatively costly.Continuous along with steel rolling technology
Perfect, the technology using cold continuous rolling to produce ordinary steel strip slowly grows up, and this technology can improve the life of corrosion resistant plate
Produce efficiency, increase heavy-weight coil and reduce production cost.But cold continuous rolling is when producing stainless steel sheet strip, and plate surface easily occurs
Micro-hole defect, and there is the state of prolonged and repeated and irregular generation in this problem.
Summary of the invention
The problem existed for prior art, the present invention provides a kind of stainless steel sheet strip cold continuous rolling process surface micro-pit defect
Control method, the method is with the rolling technological parameter of cold continuous rolling process, roll surface roughness, emulsion parameter etc. and surface
The relation of micro-hole ratio of defects is the starting point of research, solves corrosion resistant plate cold continuous rolling process surface micro-pit defects controlling and asks
Topic.
Stainless steel sheet strip cold continuous rolling process surface micro-pit defects controlling method, detailed process is: prepare thickness be 3 ~
5mm, width are the stainless steel sheet strip of 1000 ~ 1450mm, use five frame continuous cold rolling process, become thickness to be 0.6 through 5 passes
The stainless steel sheet strip of ~ 1mm, wherein the state modulator scope of continuous cold rolling process is: roll surface roughness 0.5 ~ 0.7 μm；Per pass
Secondary reduction ratio 23 ~ 31%；Final Stand Rolling speed 600 ~ 1000m/min；Forward pull 147 ~ 403kN, backward pull 57 ~ 403kN；First
During passes, emulsion temperature is 62 ~ 64 DEG C, and during residue 2 ~ 5 passes, emulsion temperature is 54 ~ 57 DEG C；First passes
Time emulsion mass concentration be 5 ~ 6%, residue 2 ~ 5 passes time emulsion mass concentration be 3 ~ 4%.
In said method, described thickness is that < 9%, plate face glossiness is good for micro-hole ratio of defects of the stainless steel sheet strip of 0.6 ~ 1mm
Good.
Beneficial effects of the present invention: the present invention uses five frame continuous cold rolling process, by controlling roll in cold continuous rolling process
Surface roughness, every time reduction ratio, Final Stand Rolling speed, front and back tension force and emulsion parameter, by micro-for steel surface hole
Ratio of defects controls < in the relatively low scope of 9%.
Accompanying drawing explanation
Fig. 1 is the shape appearance figure of the embodiment of the present invention 1 (SUS430) original steel；
Fig. 2 is the shape appearance figure of the final steel of the embodiment of the present invention 1 (SUS430)；
Fig. 3 is the shape appearance figure of the embodiment of the present invention 2 (SUS304) original steel；
Fig. 4 is the shape appearance figure of the final steel of the embodiment of the present invention 2 (SUS304)；
Fig. 5 is the shape appearance figure of the embodiment of the present invention 3 (SUS321) original steel；
Fig. 6 is the shape appearance figure of the final steel of the embodiment of the present invention 3 (SUS321)；
Fig. 7 is the shape appearance figure of the embodiment of the present invention 4 (SUS410) original steel；
Fig. 8 is the shape appearance figure of the final steel of the embodiment of the present invention 4 (SUS410).
Detailed description of the invention
The cold continuous rolling that the present invention implements to use is: 1750mm six roll five-machine frame tandem mills.
Embodiment 1
The SUS430 stainless steel sheet strip that preparation thickness is 3mm, width is 1000mm, uses five frame continuous cold rolling process, through 5 passages
Being rolled into the stainless steel sheet strip that thickness is 0.6mm, wherein the state modulator scope of continuous cold rolling process is: roll surface roughness
0.7 μm, every time reduction ratio is respectively 31%, 30%, 29%, 24%, 23%, total reduction 80%, Final Stand Rolling speed 600m/
Min, forward pull 123 ~ 335kN, backward pull 47 ~ 335kN, during first passes, emulsion temperature is 63 DEG C, and residue 2 ~ 5 passages are rolled
Time processed, emulsion temperature is 55 DEG C；During first passes, emulsion mass concentration is 6%, emulsion matter during residue 2 ~ 5 passes
Amount concentration is 3%.Concrete technology parameter is as shown in table 1.
The continuous cold rolling process parameter of table 1 embodiment 1
Experimental result: Fig. 1 provides the shape appearance figure of original SUS430 type stainless steel sheet strip, the most original strip table
There are many micro-holes, a low in glossiness in face, and uses the stainless steel sheet strip surface micro-pit that thickness is 0.6mm prepared by the present embodiment method
Ratio of defects is low, is 8.4%, and glossiness is good, as shown in Figure 2.
Embodiment 2
The SUS304 stainless steel sheet strip that preparation thickness is 4mm, width is 1450mm, uses five frame continuous cold rolling process, through 5 passages
Being rolled into the stainless steel sheet strip that thickness is 0.8mm, wherein the state modulator scope of continuous cold rolling process is: roll surface roughness
0.5 μm, every time reduction ratio is respectively 29%, 30%, 30%, 25%, 23%, total reduction 80%, Final Stand Rolling speed 800m/
Min, forward pull 205 ~ 663kN, backward pull 91 ~ 663kN, during first passes, emulsion temperature is 63 DEG C, and residue 2 ~ 5 passages are rolled
Time processed, emulsion temperature is 54 ~ 55 DEG C；During first passes, emulsion mass concentration is 6%, emulsifying during residue 2 ~ 5 passes
Liquid mass concentration is 3 ~ 4%.Concrete technology parameter is as shown in table 2.
The continuous cold rolling process parameter of table 2 embodiment 2
Experimental result: Fig. 3 provides the shape appearance figure of original SUS304 type stainless steel sheet strip, the most original strip table
There are many micro-holes, a low in glossiness in face, and uses the stainless steel sheet strip surface micro-pit that thickness is 0.8mm prepared by the present embodiment method
Ratio of defects is low, is 8.7%, and glossiness is good, as shown in Figure 4.
Embodiment 3
The SUS321 stainless steel sheet strip that preparation thickness is 5mm, width is 1250mm, uses five frame continuous cold rolling process, through 5 passages
Being rolled into the stainless steel sheet strip that thickness is 1mm, wherein the state modulator scope of continuous cold rolling process is: roll surface roughness 0.6 μ
M, every time reduction ratio is respectively 30%, 30%, 28%, 26%, 23%, total reduction 80%, mill speed 1000m/min, forward pull
257 ~ 705kN, backward pull 99 ~ 705kN, during first passes, emulsion temperature is 64 DEG C, emulsion during residue 2 ~ 5 passes
Temperature is 55 DEG C；During first passes, emulsion mass concentration is 5%, and during residue 2 ~ 5 passes, emulsion mass concentration is
3%.Concrete technology parameter is as shown in table 3.
The continuous cold rolling process parameter of table 3 embodiment 3
Experimental result: Fig. 5 provides the shape appearance figure of original SUS321 type stainless steel sheet strip, the most original strip table
There are many micro-holes, low in glossiness in face, and the stainless steel sheet strip surface micro-pit that thickness is 1mm using the present embodiment method to prepare lacks
The rate of falling into is low, is 8.9%, and glossiness is good, as shown in Figure 6.
Embodiment 4
The SUS410 stainless steel sheet strip that preparation thickness is 3mm, width is 1250mm, uses five frame continuous cold rolling process, through 5 passages
Being rolled into the stainless steel sheet strip that thickness is 0.67mm, wherein the state modulator scope of continuous cold rolling process is: roll surface roughness
0.5 μm, every time reduction ratio is respectively 30%, 27%, 27%, 23%, 23%, total reduction 78%, mill speed 700m/min, toe-out
Power 172 ~ 423kN, backward pull 66 ~ 423kN, during first passes, emulsion temperature is 63 DEG C, emulsifying during residue 2 ~ 5 passes
Liquid temp is 55 ~ 57 DEG C；During first passes, emulsion mass concentration is 6%, and during residue 2 ~ 5 passes, emulsion quality is dense
Degree is 3%.Concrete technology parameter is as shown in table 4.
The continuous cold rolling process parameter of table 4 embodiment 4
Experimental result: Fig. 7 provides the shape appearance figure of original SUS410 type stainless steel sheet strip, the most original strip table
There are many micro-holes, low in glossiness in face, and the corrosion resistant plate belt surface that thickness is 0.67mm using the present embodiment method to prepare is micro-
Hole ratio of defects is low, is 8.6%, and glossiness is good, as shown in Figure 8.
Claims (2)
1. stainless steel sheet strip cold continuous rolling process surface micro-pit defects controlling method, it is characterised in that detailed process is: prepare thickness
Degree is 3 ~ 5mm, width is the stainless steel sheet strip of 1000 ~ 1450mm, uses five frame continuous cold rolling process, becomes thickness through 5 passes
Degree is the stainless steel sheet strip of 0.6 ~ 1mm, and wherein the state modulator scope of continuous cold rolling process is: roll surface roughness 0.5 ~ 0.7 μ
m；Every time reduction ratio 23 ~ 31%；Final Stand Rolling speed 600 ~ 1000m/min；Forward pull 147 ~ 403kN, backward pull 57 ~
403kN；During first passes, emulsion temperature is 62 ~ 64 DEG C, and during residue 2 ~ 5 passes, emulsion temperature is 54 ~ 57 DEG C；First
During passes, emulsion mass concentration is 5 ~ 6%, and during residue 2 ~ 5 passes, emulsion mass concentration is 3 ~ 4%.
Stainless steel sheet strip cold continuous rolling process surface micro-pit defects controlling method the most according to claim 1, its feature exists
In micro-hole ratio of defects of the stainless steel sheet strip that described thickness is 0.6 ~ 1mm, < 9%, plate face glossiness is good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610350532.7A CN105855291B (en) | 2016-05-25 | 2016-05-25 | Stainless steel sheet strip cold continuous rolling process surface micro-pit defects controlling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610350532.7A CN105855291B (en) | 2016-05-25 | 2016-05-25 | Stainless steel sheet strip cold continuous rolling process surface micro-pit defects controlling method |
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| Publication Number | Publication Date |
|---|---|
| CN105855291A true CN105855291A (en) | 2016-08-17 |
| CN105855291B CN105855291B (en) | 2018-04-10 |
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| CN201610350532.7A Expired - Fee Related CN105855291B (en) | 2016-05-25 | 2016-05-25 | Stainless steel sheet strip cold continuous rolling process surface micro-pit defects controlling method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058707A (en) * | 2017-04-11 | 2017-08-18 | 无锡华生精密材料股份有限公司 | A kind of production method of bright titaniferous stainless steel band |
| CN109530433A (en) * | 2018-12-11 | 2019-03-29 | 佛山市诚德新材料有限公司 | A kind of Cold Rolling System of stainless steel band |
| CN111195656A (en) * | 2018-11-19 | 2020-05-26 | 宝山钢铁股份有限公司 | Rolling lubrication process and emulsion suitable for simultaneous production of plain carbon steel and high-strength steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417908A (en) * | 1990-05-10 | 1992-01-22 | Kawasaki Steel Corp | Manufacture of cold rolled stainless steel strip |
| CN1318438A (en) * | 2001-06-05 | 2001-10-24 | 宁波宝新不锈钢有限公司 | Cold rolling process of ferrite and martensitic stainless steel belt |
| CN102699019A (en) * | 2012-04-24 | 2012-10-03 | 永鑫精密材料（无锡）有限公司 | Partially-etched precision stainless steel strip used in communication industry as well as production process and application thereof |
| CN103372567A (en) * | 2012-04-26 | 2013-10-30 | 宝山钢铁股份有限公司 | Method for producing ferritic stainless steel bands with roughened surfaces through cold continuous rolling |
| CN103878173A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Production method for eliminating surface color difference of cold rolled sheet |
-
2016
- 2016-05-25 CN CN201610350532.7A patent/CN105855291B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417908A (en) * | 1990-05-10 | 1992-01-22 | Kawasaki Steel Corp | Manufacture of cold rolled stainless steel strip |
| CN1318438A (en) * | 2001-06-05 | 2001-10-24 | 宁波宝新不锈钢有限公司 | Cold rolling process of ferrite and martensitic stainless steel belt |
| CN102699019A (en) * | 2012-04-24 | 2012-10-03 | 永鑫精密材料（无锡）有限公司 | Partially-etched precision stainless steel strip used in communication industry as well as production process and application thereof |
| CN103372567A (en) * | 2012-04-26 | 2013-10-30 | 宝山钢铁股份有限公司 | Method for producing ferritic stainless steel bands with roughened surfaces through cold continuous rolling |
| CN103878173A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Production method for eliminating surface color difference of cold rolled sheet |
Non-Patent Citations (1)
| Title |
|---|
| 石全强: "《SUS430铁素体不锈钢冷连轧润滑工艺研究》", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058707A (en) * | 2017-04-11 | 2017-08-18 | 无锡华生精密材料股份有限公司 | A kind of production method of bright titaniferous stainless steel band |
| CN111195656A (en) * | 2018-11-19 | 2020-05-26 | 宝山钢铁股份有限公司 | Rolling lubrication process and emulsion suitable for simultaneous production of plain carbon steel and high-strength steel |
| CN111195656B (en) * | 2018-11-19 | 2021-08-17 | 宝山钢铁股份有限公司 | Rolling lubrication process and emulsion suitable for simultaneous production of plain carbon steel and high-strength steel |
| CN109530433A (en) * | 2018-12-11 | 2019-03-29 | 佛山市诚德新材料有限公司 | A kind of Cold Rolling System of stainless steel band |
| CN109530433B (en) * | 2018-12-11 | 2023-12-08 | 佛山市诚德新材料有限公司 | Cold rolling system of stainless steel strip |
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| CN105855291B (en) | 2018-04-10 |
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