CSP production line cold rolling feed deformation system

A production line and feeding technology, applied in metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of high yield strength, high reduction rate of finishing mill, fine grain of finished products, etc.

Inactive Publication Date: 2007-03-14
HEBEI IRON AND STEEL
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Problems solved by technology

CSP routine process produces low carbon steel according to the thickness of the finished product, R 1 The reduction rate of the roughing mill is generally 40-46%; due to the small reduction rate of the roughing mill, the reduction rate of the finishing mill is too large, resulting in finer grains of the finished product and higher yield strength

Method used

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  • CSP production line cold rolling feed deformation system

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Embodiment Construction

[0014] Referring to Fig. 1, the arrangement of the rough rolling mill 5 and the finishing rolling mills 9-14 of the CSP production line according to the present invention is as shown in the figure. In the conventional CSP production process, according to the thickness of the finished low carbon steel, R 1 The reduction ratio of the rough rolling mill 5 is 40-46%. Since the reduction ratio of the rough rolling mill is too small, the reduction ratio of the finishing mill is relatively large, resulting in fine grains and high yield strength of the finished product. The main improvement of the present invention is that, according to the cold rolling supply, the yield strength of the strip steel should be appropriately reduced, the elongation rate of the product should be increased, and the deformation system should be controlled, wherein the main method is to increase the R 1 The reduction rate of the rough rolling mill can make the austenite fully recrystallize, improve the auste...

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Abstract

The invention relates to a cold rolling material deformation control method of CSP product line. Wherein, it comprises rough roller compress rate, fine roller compress rate, and total compress rate; the improved R1 rough roller compress rate is 48.5-50.3%. The invention, based on the material feeding demand, via lots of comparison tests and the working ability of roller, can find out optimized parameters, to improve the compress rate of R1 rough roller, to crystallize the austenite completely and improve the ferrite state, to reduce the yield strength of steel band.

Description

technical field [0001] The invention relates to a steel rolling process, in particular to a cold rolling feed deformation system for a CSP production line, which belongs to metallurgical steel rolling [0002] technology field. Background technique [0003] Steel rolling is one of the main processing methods in metal pressure processing. Rolling can cause permanent deformation of cast slabs or steel ingots. Steel rolling can not only cause plastic deformation of billet or steel ingot, but also change the phenomenon of loose and porous inside, coarse and uneven grain structure, and serious segregation. The main control process parameters in the rolling process are deformation system, temperature system, etc. Reasonably formulate these process parameters to obtain the required grain and structure, so that the steel can obtain the required comprehensive mechanical properties. [0004] For hot-rolled strip steel, the deformation system mainly refers to the pass reduction rate ...

Claims

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Application Information

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IPC IPC(8): B21B37/58B21B37/00
Inventor张晓力吝章国谷凤龙张玉道吕德文
OwnerHEBEI IRON AND STEEL