Cold-rolled bifocal plate as well as manufacturing method and application thereof

A manufacturing method and light plate technology, which is applied in metal rolling and other directions, can solve the problems that cold-rolled double-light plate cannot be satisfied at the same time, low roughness, etc., and achieve the effects of reducing bonding defects, low roughness, and improving surface quality

Active Publication Date: 2020-06-26
湖南华菱涟源钢铁有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a cold-rolled double-light sheet and its manufacturing method and application, so as to solve the problem that the cold-rolled double-light sheet in the prior art cannot meet low roughness and high quality at the same time

Method used

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  • Cold-rolled bifocal plate as well as manufacturing method and application thereof
  • Cold-rolled bifocal plate as well as manufacturing method and application thereof

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Embodiment Construction

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] On the one hand, the embodiment of the present invention proposes a method for manufacturing a cold-rolled double-bright sheet.

[0023] The slabs obtained from blast furnace molten iron smelting, converter molten steel smelting, LF molten steel refining, slab continuous casting, and soaking processes, the slabs are sequentially subjected to hot rolling, pickling and cold rolling, bell annealing, smoothing, and finishing processes. Get cold-rolled double-light board.

[0024] Among them, the carbon content of the argon station can be controlled at 0.1% to 0.16% in the converter molt...

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Abstract

The invention belongs to the technical field of ferrous metallurgy and particularly relates to a manufacturing method of a cold-rolled bifocal plate. The manufacturing method is characterized by comprising the following steps: sequentially carrying out hot continuous rolling, acid pickling cold continuous rolling, batch annealing, levelling and finishing on a plate slab to obtain the cold-rolled bifocal plate; wherein the relative reduction rate of the acid pickling cold continuous rolling procedure is controlled to be 50% or above; the roughness of a last rack working roll in the acid pickling cold continuous rolling procedure is 1.5-2.0 microns to realize that the roughness of a chill roll obtained when the plate slab is sequentially subjected to the hot continuous rolling and acid pickling cold continuous rolling is 0.3-0.6 micron; and the roughness of a temper mill working roll is controlled to be 0.2-0.6 micron during the levelling procedure to realize that the roughness of the cold-rolled bifocal plate is 0.15-0.30 micron. Through copying and transferring of the roughness of the working roll, the purpose of producing the high-quality cold-rolled bifocal plate with the roughness being 0.15-0.30 micron is realized.

Description

technical field [0001] The invention belongs to the technical field of iron and steel smelting, and in particular relates to a cold-rolled double-bright plate and its manufacturing method and application. Background technique [0002] Cold-rolled double-light boards have high requirements on surface roughness, and generally require bright surfaces and small roughness; if the surface roughness of the incoming materials for manufacturing cold-rolled double-light boards is high, the roughness of the products often does not meet the requirements; currently The surface of incoming materials is generally smooth, but quality problems such as slippage are prone to occur during continuous annealing furnace production, so that the surface quality of cold-rolled double-light sheets cannot reach the production effect. [0003] Therefore, it is necessary to develop a method for manufacturing cold-rolled double-bright sheets that not only satisfies the low roughness of cold-rolled double-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C21D8/02B21C37/02B21B1/22
CPCB21B1/22B21B2001/228B21C37/02C21D8/0226C21D8/0236C21D8/0242C21D8/0273C22C38/02C22C38/04C22C38/06
Inventor 章晓辉李光辉张益龙田飞李晓少黄威梁玉新吴剑胜蒲虎兵赵亚军
Owner 湖南华菱涟源钢铁有限公司
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