CN114643286A - Production method for solving abnormal thinning of plate blank - Google Patents
Production method for solving abnormal thinning of plate blank Download PDFInfo
- Publication number
- CN114643286A CN114643286A CN202210382435.1A CN202210382435A CN114643286A CN 114643286 A CN114643286 A CN 114643286A CN 202210382435 A CN202210382435 A CN 202210382435A CN 114643286 A CN114643286 A CN 114643286A
- Authority
- CN
- China
- Prior art keywords
- pinch roll
- pressure
- plate blank
- steel
- fixing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 238000005098 hot rolling Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 230000033764 rhythmic process Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
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- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
-
- 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
- B21B37/48—Tension control; Compression control
-
- 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
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
Abstract
The invention discloses a production method for solving abnormal thinning of a plate blank, which comprises the following steps: after the plate blank is started by the width fixing machine and steel is fed, after 5s, when the pinch roll does not detect pressure or the detected pressure is less than 100KN, the pinch roll is pressed down for the second time, and a roll gap is pressed down for 5-8 mm; when the pinch roll detects that the pressure is more than 100KN in the pressing process, the width fixing machine is normally started, and if the pressure is not detected by the pinch roll after the pinch roll is pressed for the second time or the detected pressure is less than 100KN, the steel feeding is stopped for carrying out the returning treatment; the problem that the thickness reduction width fixing machine of the scalping plate blank cannot feed steel for production is effectively solved, the continuity of hot rolling rhythm is improved, and the device plays a great promoting role in the production stability and control research of hot rolled strip steel.
Description
Technical Field
The invention belongs to the technical field of sizing machines, and particularly relates to a production method for solving abnormal thinning of a plate blank.
Background
At present, in the rapid production process of a rolling line, when partial returned slabs, scalped slabs and steel-making hot-delivery cold-delivery slabs are rolled by a fixed width machine, the slabs are clamped in the fixed width machine, the fixed width machine stops tracking, and the rolling returned slabs cannot be subjected to off-line treatment.
Therefore, a production method that solves the problem of abnormally thinned slabs is required.
Disclosure of Invention
The invention aims to provide a production method for solving the problem of abnormal thinning of a plate blank.
The technical scheme adopted by the invention for solving the technical problems is as follows: a production method for solving abnormal thinning of a plate blank comprises the following steps:
1) after the plate blank is started by the width fixing machine and steel is fed, after 5s, when the pinch roll does not detect pressure or the detected pressure is less than 100KN, the pinch roll is pressed down for the second time, and a roll gap is pressed down for 5-8 mm;
2) and when the pinch roll detects that the pressure is more than 100KN in the pressing process, normally starting the width fixing machine, and stopping feeding steel for carrying out the remelting treatment when the pinch roll still does not detect the pressure or the detection pressure is less than 100KN after the pinch roll is pressed for the second time.
The invention has the following beneficial effects: the method effectively solves the problem that the thickness reduction width fixing machine of the scalping plate blank cannot feed steel for production, improves the continuity of hot rolling rhythm, and plays a great role in promoting the production stability and control research of the hot rolled strip steel.
Detailed Description
The present invention will now be described in further detail.
A production method for solving abnormal thinning of a plate blank comprises the following steps:
the secondary pressing function of the pinch roll at the inlet of the width fixing machine is added: after the width fixing machine starts the slab to feed steel, when the pinch roll does not detect pressure or the detection pressure is less than 100KN after 5s, the pinch roll automatically performs secondary pressing, roll gap (5-8 mm, can be changed according to conditions) is pressed down, the detection pressure is more than 100KN in the pressing down process, the width fixing machine starts a normal tracking program, and steel feeding production is performed normally.
Compared with the traditional control method, the operation method effectively solves the problem that the thickness reduction and width fixation machine of the scalped slab cannot feed steel for production, improves the continuity of hot rolling rhythm, and plays a great role in promoting the production stability and control research of hot rolled strip steel.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (1)
1. The production method for solving the problem of abnormal thinning of the plate blank is characterized by comprising the following steps of:
1) after the plate blank is started by the width fixing machine and steel is fed, after 5s, when the pinch roll does not detect pressure or the detected pressure is less than 100KN, the pinch roll is pressed down for the second time, and a roll gap is pressed down for 5-8 mm;
2) and when the pinch roll detects that the pressure is more than 100KN in the pressing process, the width fixing machine is normally started, and if the pressure is not detected by the pinch roll after the pinch roll is pressed for the second time or the detected pressure is less than 100KN, the steel feeding is stopped for carrying out the returning treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210382435.1A CN114643286A (en) | 2022-04-12 | 2022-04-12 | Production method for solving abnormal thinning of plate blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210382435.1A CN114643286A (en) | 2022-04-12 | 2022-04-12 | Production method for solving abnormal thinning of plate blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114643286A true CN114643286A (en) | 2022-06-21 |
Family
ID=81997332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210382435.1A Pending CN114643286A (en) | 2022-04-12 | 2022-04-12 | Production method for solving abnormal thinning of plate blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114643286A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007222918A (en) * | 2006-02-24 | 2007-09-06 | Jfe Steel Kk | Slip detection method and slip prevention method in width reduction press equipment |
| CN201157846Y (en) * | 2008-03-14 | 2008-12-03 | 宝山钢铁股份有限公司 | Withdrawal roll having slab thickness deviation detection function |
| CN112742867A (en) * | 2021-01-30 | 2021-05-04 | 宝钢湛江钢铁有限公司 | Method for normal rolling after SSP pinch roll slipping |
| CN113877968A (en) * | 2020-07-01 | 2022-01-04 | 宝山钢铁股份有限公司 | Method for preventing width fixing machine from slipping |
-
2022
- 2022-04-12 CN CN202210382435.1A patent/CN114643286A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007222918A (en) * | 2006-02-24 | 2007-09-06 | Jfe Steel Kk | Slip detection method and slip prevention method in width reduction press equipment |
| CN201157846Y (en) * | 2008-03-14 | 2008-12-03 | 宝山钢铁股份有限公司 | Withdrawal roll having slab thickness deviation detection function |
| CN113877968A (en) * | 2020-07-01 | 2022-01-04 | 宝山钢铁股份有限公司 | Method for preventing width fixing machine from slipping |
| CN112742867A (en) * | 2021-01-30 | 2021-05-04 | 宝钢湛江钢铁有限公司 | Method for normal rolling after SSP pinch roll slipping |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |