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CSP production line cold rolling feed deformation system

A production line and feeding technology, applied in the field of metallurgical steel rolling, can solve the problems of large reduction rate of finishing mill, fine grain of finished product and high yield strength

Inactive Publication Date: 2008-09-17
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

[0012] Referring to Fig. 1, the roughing mill 5 and finishing mills 9-14 of the CSP production line of the present invention are set up as shown in the figure. In the CSP conventional process production, according to the thickness of the low-carbon steel finished product, R 1 The reduction rate of the rough rolling mill 5 is 40-46%. The reduction rate of the rough rolling mill is relatively small, which makes the reduction rate of the finishing rolling mill relatively large, resulting in fine grains of the finished product and high yield strength. The main improvement of the present invention is that according to the cold rolling material supply, the yield strength of the strip should be appropriately reduced, the elongation of the product should be increased, and the deformation system should be controlled. The main thing is to increase the R 1 The reduction rate of the rough rolling mill can make the austenite fully recrystallized, improve the austenite shape, and then improve t...

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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 method, in particular to a cold rolling feeding deformation system of a CSP production line, and belongs to the technical field of metallurgical steel rolling. Background technique [0002] Steel rolling is one of the main processing methods in metal pressure processing. The casting billet or steel ingot can be permanently deformed by rolling. Rolling steel can not only cause plastic deformation of cast slabs or steel ingots, but also change their internal looseness and porosity, coarse and uneven grain structure, and serious segregation. The main control process parameters in the rolling process include deformation system, temperature system, etc., reasonable formulation of these process parameters to obtain the required grain and structure, so that the steel can obtain the required comprehensive mechanical properties. [0003] For hot-rolled strip steel, the deformation system mainly refers to the pass redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/58B21B37/00
Inventor 张晓力吝章国谷凤龙张玉道吕德文
Owner HEBEI IRON AND STEEL