CN103084386B - Method for optimizing surface quality of hot-rolled steel plates - Google Patents
Method for optimizing surface quality of hot-rolled steel plates Download PDFInfo
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- CN103084386B CN103084386B CN201110338997.8A CN201110338997A CN103084386B CN 103084386 B CN103084386 B CN 103084386B CN 201110338997 A CN201110338997 A CN 201110338997A CN 103084386 B CN103084386 B CN 103084386B
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Abstract
The invention provides a method for optimizing surface quality of hot-rolled steel plates so as to improve surface quality of hot-rolled scoured steel plates and increase thickness allowance. The method for optimizing surface quality of the hot-rolled steel plates is characterized by adding a step of rolling to steps of scouring and rolling in the steel plate hot-rolling process. The step of rolling is carried out under rolling condition of small rolling reduction ranging from 0.1mm to 0.3mm so as to roll small defects on the surface of the steel plates, improve the surface quality of the steel plates and increase thickness allowance.
Description
Technical field
The present invention relates to hot rolling technology.
Background technology
Compared to cold-rolled steel sheet, hot rolled steel plate has wider etc. the defect of surface quality deficiency, tolerance zone, so in a lot of field, also cannot replace cold-rolled steel sheet; But hot rolled steel plate has the relatively cheap cost advantage of price because its process costs is low, its range of application is just becoming more and more wider.
As shown in Figure 1, the laggard pickling streamline of uncoiling of steel plate completes pickling process, then direct curling for next procedure.The Surface Defects in Steel Plate (pit, pit etc.) produced in course of hot rolling is retained, steel plate thickness tolerance not much improvement simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of method optimizing hot rolled sheet metal surface quality, to realize the improvement of hot rolling acid-cleaning plate surface quality and thickness deviation.
For realizing the method for the optimization hot rolled sheet metal surface quality of described object, be characterized in, rolling process together with increasing with in curling process at the pickling process of hot-rolled steel plate technique, this rolling process carries out under the rolling condition of the small drafts of 0.1mm to 0.3mm, to offset surface of steel plate tiny flaw, improve plate surface quality and improve steel plate thickness tolerance.
The application of current hot rolled steel plate is more and more extensive, along with the requirement that client is more and more higher, to the surface quality of hot rolled steel plate and the requirement of dimensional tolerance also more and more higher.The pickling of hot rolled steel plate is opened flat as its important production technology, certainly will also more and more need to carry out process optimization.The quality optimization technique of steel plate of the present invention had both inherited the advantage of traditional design, overcome again the shortcoming of traditional design, there is the effect taking into account and improve surface quality and take in steel plate tolerance, the features such as good manufacturability, applicability are strong, scrap build is with low cost, different customer requirement can be met well, tool market prospects widely.
Accompanying drawing explanation
Fig. 1 is common hot rolled steel plate acid cleaning process schematic diagram.
Fig. 2 is hot rolled steel plate acid cleaning process schematic diagram of the present invention.
Detailed description of the invention
As shown in Figure 2, in one embodiment of the invention, new technology terminates to before curling at steel plate acid-washing, increase by one rolling process (calendering), be rolled under the rolling condition of small drafts (0.1 ~ 0.3mm) by steel plate, surface of steel plate tiny flaw is offseted, thus reaches the effect improved surface quality and improve thickness deviation.
Such as, for tensile strength at below 600MPa, low-carbon (LC) (the C% ≈ 0.1%) hot rolling acid-cleaning plate that thickness is 6mm, width is 200mm, the burden requirement of pressure to milling train (Φ 180 × 350) of 0.1 ~ 0.3mm is less than 40KW.Therefore adopt the milling train of Φ 180 × 350 specification (domestic small-sized and cold-rolling equipment that medium-sized cold rolling mill is very common) to be rolled, the rated power of the type milling train is greater than 90KW usually, can be applicable to knobble completely.
Claims (1)
1. optimize the method for hot rolled sheet metal surface quality, it is characterized in that, rolling process together with increasing with in curling process at the pickling process of hot-rolled steel plate technique, this rolling process carries out under the rolling condition of the small drafts of 0.1mm to 0.3mm, to offset surface of steel plate tiny flaw, improve plate surface quality and improve steel plate thickness tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338997.8A CN103084386B (en) | 2011-10-31 | 2011-10-31 | Method for optimizing surface quality of hot-rolled steel plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338997.8A CN103084386B (en) | 2011-10-31 | 2011-10-31 | Method for optimizing surface quality of hot-rolled steel plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103084386A CN103084386A (en) | 2013-05-08 |
| CN103084386B true CN103084386B (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110338997.8A Active CN103084386B (en) | 2011-10-31 | 2011-10-31 | Method for optimizing surface quality of hot-rolled steel plates |
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| CN (1) | CN103084386B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19905286A1 (en) * | 1999-02-03 | 2000-08-10 | Sms Demag Ag | Working method and system for flexible and economical pickling and cold rolling of metal strips |
| KR100496607B1 (en) * | 2000-12-27 | 2005-06-22 | 주식회사 포스코 | Method And Device For Manufacturing A Hot Rolled Steel Strip |
| US20050199322A1 (en) * | 2004-03-10 | 2005-09-15 | Jfe Steel Corporation | High carbon hot-rolled steel sheet and method for manufacturing the same |
| WO2007088985A1 (en) * | 2006-01-31 | 2007-08-09 | Jfe Steel Corporation | Steel sheet with excellent suitability for fine blanking and process for producing the same |
| JP4952236B2 (en) * | 2006-12-25 | 2012-06-13 | Ｊｆｅスチール株式会社 | High carbon hot rolled steel sheet and manufacturing method thereof |
| CN102205350A (en) * | 2011-01-22 | 2011-10-05 | 马鞍山钢铁股份有限公司 | Device and method for removing scale skin of hot rolled steel plate for cold rolling |
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2011
- 2011-10-31 CN CN201110338997.8A patent/CN103084386B/en active Active
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| Publication number | Publication date |
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| CN103084386A (en) | 2013-05-08 |
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