CN104190719B - The method improving stainless steel surfaces quality - Google Patents
The method improving stainless steel surfaces quality Download PDFInfo
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- CN104190719B CN104190719B CN201410457064.4A CN201410457064A CN104190719B CN 104190719 B CN104190719 B CN 104190719B CN 201410457064 A CN201410457064 A CN 201410457064A CN 104190719 B CN104190719 B CN 104190719B
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Abstract
The method improving stainless steel surfaces quality, belongs to steel rolling field, it is characterized in that second computer sets high-pressure water descaling according to steel grade and whether sprays water；Primary computer carries out automatic decision accordingly, when judging not spray water, namely puts into de-scaling pinch roll and does not fall automatic control program, and primary computer controls solenoid directional control valve makes de-scaling pinch roll all the time at cocked position, does not contact strip steel, it is ensured that rolling stainless steel surfaces quality.The present invention achieves de-scaling pinch roll according to steel grade and rises and falls and automatically control, and eliminates the scuffing hidden danger of quality that stainless steel strip surface is produced by de-scaling pinch roll device, has saved the equipment obstacle management time；Ensure that de-scaling pinch roll device control action is normal, it is to avoid owing to normally controlling the de-scaling problem and the steel scrap fault that cause.
Description
Technical field
The invention belongs to steel rolling field, be specifically related to automatically controlling of hot-continuous-rolling strip steel finish rolling region.
Background technology
High-pressure water descaling case and de-scaling pinch roll is included at hot continuous rolling equipment in finish rolling zone, whether high-pressure water descaling uses and depends on technological requirement, the effect of de-scaling pinch roll is to seal high pressure descaling water, and no matter whether strip steel de-scaling, and de-scaling pinch roll will decline and clamp strip steel.
During due to rolling rustless steel, finish rolling de-scaling water under high pressure does not spray, and whereabouts de-scaling pinch roll easily causes the scuffing to stainless steel strip surface of the pinch roll roll surface, affects product quality and causes disorderly closedown.
Summary of the invention
The invention aims to avoid de-scaling pinch roll that stainless steel surfaces scratches phenomenon, improve stainless steel product quality.
Technical scheme: second computer sets finish rolling high-pressure water descaling according to rolled band steel steel grade and whether spray water, is set to primary computer by sending under second computer during belt steel rolling, and primary computer automatic decision accordingly input de-scaling pinch roll rises and falls automatic control program.During rolling rustless steel (300 be, 400 be), owing to finish rolling high-pressure water descaling does not spray, therefore primary computer controls solenoid directional control valve and makes de-scaling pinch roll all the time at cocked position, does not contact strip steel；When rolling other steel grades except rustless steel, realize de-scaling pinch roll automatic lifting/lowering support according to original control program, meet water shutoff requirement.
Described electromagnetic valve is Rexroth company, and model is: 4WE6Y6X/EG24N9K4.
The present invention achieves de-scaling pinch roll according to steel grade and rises and falls and automatically control, and eliminates the scuffing hidden danger of quality that stainless steel strip surface is produced by de-scaling pinch roll device, has saved the equipment obstacle management time；Ensure that de-scaling pinch roll device control action is normal, it is to avoid owing to normally controlling the de-scaling problem and the steel scrap fault that cause.
Detailed description of the invention
Embodiment 1: it is rustless steel that the steel grade that second computer setting is not sprayed water has 400 to be rustless steel and 300；When rolling 400 and being rustless steel, owing to finish rolling high-pressure water descaling is not sprayed water, the automatic control program therefore primary computer automatic decision input de-scaling pinch roll does not fall: primary computer controls solenoid directional control valve makes de-scaling pinch roll all the time at cocked position, do not contact strip steel, it is ensured that 400 is stainless steel surfaces quality.
Embodiment 2: it is rustless steel that the steel grade that second computer setting is not sprayed water has 400 to be rustless steel and 300；When rolling 300 and being rustless steel, owing to finish rolling high-pressure water descaling does not spray, the automatic control program therefore primary computer automatic decision input de-scaling pinch roll does not fall: primary computer controls solenoid directional control valve makes de-scaling pinch roll all the time at cocked position, do not contact strip steel, it is ensured that 300 is stainless steel surfaces quality.
Claims (2)
1. the method improving stainless steel surfaces quality, second computer sets high-pressure water descaling according to steel grade and whether sprays water；Primary computer carries out automatic decision accordingly, when judging not spray water, namely puts into de-scaling pinch roll and does not fall automatic control program, and primary computer controls solenoid directional control valve makes de-scaling pinch roll all the time at cocked position, does not contact strip steel, it is ensured that rolling stainless steel surfaces quality；It is characterized in that second computer sets high-pressure water descaling according to steel grade and whether sprays water；Primary computer carries out automatic decision accordingly, when judging water spray, realizes de-scaling pinch roll automatic lifting/lowering support according to original control program, meets water shutoff requirement.
2. the method for raising stainless steel surfaces quality according to claim 1, it is characterized in that described second computer has 400 to be rustless steel and 300 according to the steel grade that steel grade setting is not sprayed water is rustless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457064.4A CN104190719B (en) | 2014-09-10 | 2014-09-10 | The method improving stainless steel surfaces quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457064.4A CN104190719B (en) | 2014-09-10 | 2014-09-10 | The method improving stainless steel surfaces quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104190719A CN104190719A (en) | 2014-12-10 |
| CN104190719B true CN104190719B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410457064.4A Active CN104190719B (en) | 2014-09-10 | 2014-09-10 | The method improving stainless steel surfaces quality |
Country Status (1)
| Country | Link |
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| CN (1) | CN104190719B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944482A (en) * | 2017-03-28 | 2017-07-14 | 首钢京唐钢铁联合有限责任公司 | Control method for rough rolling descaling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520129A (en) * | 1938-10-04 | 1940-04-16 | Wean Engineering Co Inc | Improvements in or relating to methods of and apparatus for descaling metal strip |
| JPS5739024A (en) * | 1980-08-20 | 1982-03-04 | Nisshin Steel Co Ltd | Scale removing method for hot rolled steel strip |
| CN101376138A (en) * | 2008-10-07 | 2009-03-04 | 南京钢铁股份有限公司 | Water retaining technique of steekle mill |
| CN102179412A (en) * | 2011-01-04 | 2011-09-14 | 山西太钢不锈钢股份有限公司 | Control method of speed and acceleration of continuous hot rolling roughing rolling unit |
| CN102581028A (en) * | 2012-03-06 | 2012-07-18 | 太原理工大学 | Hardness compensation method for controlling band steel hot-rolling molding process |
| CN103264053A (en) * | 2013-05-21 | 2013-08-28 | 山西太钢不锈钢股份有限公司 | Strip steel speed value taking control method for finishing mill group after roll replacing |
-
2014
- 2014-09-10 CN CN201410457064.4A patent/CN104190719B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520129A (en) * | 1938-10-04 | 1940-04-16 | Wean Engineering Co Inc | Improvements in or relating to methods of and apparatus for descaling metal strip |
| JPS5739024A (en) * | 1980-08-20 | 1982-03-04 | Nisshin Steel Co Ltd | Scale removing method for hot rolled steel strip |
| CN101376138A (en) * | 2008-10-07 | 2009-03-04 | 南京钢铁股份有限公司 | Water retaining technique of steekle mill |
| CN102179412A (en) * | 2011-01-04 | 2011-09-14 | 山西太钢不锈钢股份有限公司 | Control method of speed and acceleration of continuous hot rolling roughing rolling unit |
| CN102581028A (en) * | 2012-03-06 | 2012-07-18 | 太原理工大学 | Hardness compensation method for controlling band steel hot-rolling molding process |
| CN103264053A (en) * | 2013-05-21 | 2013-08-28 | 山西太钢不锈钢股份有限公司 | Strip steel speed value taking control method for finishing mill group after roll replacing |
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| Publication number | Publication date |
|---|---|
| CN104190719A (en) | 2014-12-10 |
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