Hardness compensation method for controlling band steel hot-rolling molding process

A technology of hot rolling forming and strip control, applied in the direction of contour control, rolling force/roll gap control, etc., can solve the problem of low rolling precision of the first piece of strip steel, and achieve the effect of improving dimensional precision
CN102581028AActive Publication Date: 2012-07-18TAIYUAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TAIYUAN UNIV OF TECH
Publication Date
2012-07-18

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Abstract

The invention relates to a hardness compensation method for controlling the band steel hot-rolling molding process, including the band steel hot-rolling molding process in which band steel is rolled into a predetermined width and thickness via a plurality of rough rolling and fine rolling procedures under the control of a computer program, particularly during the switchover of band steel rough rolling and fine rolling, the hardness compensation formula in the model-controlled band steel hot-rolling molding process is F=NNFKORR'MH'coffMH'EPS, where, F is the rolling pressure, NNFKORR is a pressure self-learning coefficient, MH is a band steel calculation hardness, EPS is a percentage of reduction, and coffMH is a hardness coefficient. In the invention, the band steel hot-rolling molding pressure is controlled precisely and timely, defects of over-pressure and under-pressure in the present band steel hot-rolling process are overcome, the quality of hot-rolled band steel products is greatly improved.
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Description

technical field

[0001] The invention relates to a rolling method of hot strip steel, in particular to a hardness compensation method of hot strip steel forming process controlled by a computer program. Background technique

[0002] In the steel grade switching process of hot strip steel, there are generally standard requirements on the process, and the steel grades are distinguished according to their hardness, while the steel grade switching follows the principle of similar hardness for transition. There are two model setting methods when the steel grade is switched. When the hardness of the steel grade is relatively close, within 10%, the short-term genetic method is used for setting calculation, that is, the pressure calculation adopts the self-learning pressure correction coefficient of the previous block of steel; when the steel grade The difference in hardness is large, and when it exceeds 10%, the long-term genetic method is used for model setting, and the long-term g...

Claims

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