Method for producing ultrathin low-carbon steel by use of thin slab casting and rolling process

A thin slab continuous casting, low carbon steel technology, applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems of wear, excessive thickness, low target finishing temperature hit rate, etc., to improve dimensional accuracy, reduce Production cost, effect of stable production
CN106583453AActive Publication Date: 2017-04-26WISDRI ENG & RES INC LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WISDRI ENG & RES INC LTD
Publication Date
2017-04-26

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Abstract

The invention relates to a method for producing ultrathin low-carbon steel by use of a thin slab casting and rolling process. The method comprises the following steps: continuously casting molten steel into a continuous cast billet with the width of 1,300-1,600 mm and the thickness of 60-100 mm; then sequentially conducting rough rolling, heat preservation by a heat holding cover, induction heating, high-pressure water phosphorus removal and finish rolling to obtain ultrathin strip steel with the width of 1,300-1,600 mm and the thickness of 0.8-1 mm; and finally, performing controlled cooling, roll-dividing cutting and roll take-up. A produced ultrathin low-carbon steel end product has the yield strength of 250-310 MPa, the tensile strength of 350-400 MPa and the ductility of larger than or equal to 35%. By adoption of the method, stable production of hot-rolled ultrathin low-carbon steel with the thickness of 0.8-1 mm can be realized, the dimensional accuracy, the flatness accuracy and the comprehensive mechanical property can be improved, the demand for 'replacement of cold product by hot product' is met and the production cost is lowered.
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Description

technical field

[0001] The invention relates to the technical field of hot rolling, and more specifically relates to a method for producing ultra-thin low-carbon steel using a thin slab continuous casting and rolling process. Background technique

[0002] The technical route of the newly developed thin slab continuous casting and rolling process at home and abroad is: continuous casting - rough rolling - shearing - heat preservation - induction heating - descaling - finishing rolling - controlled cooling - shearing - coiling. Compared with the traditional thin slab continuous casting and rolling process, this process can produce thinner hot-rolled strip steel, and the product can realize "replacing cold with heat", thereby reducing energy consumption and production costs to a greater extent, so it has the advantages of Broad market prospects.

[0003] At present, the thickness of low-carbon steel products produced by this process can reach 0.8 ~ 1mm. This thickness range is...

Claims

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