Steel board end intra-plate gauge deviation control method

A control method and steel plate technology, applied in the field of metallurgical steel rolling control, can solve the problems of large thickness deviation of the head, excessive shearing, and reduced yield, and achieve the effect of accurate head, saving procedures and significant progress.

Inactive Publication Date: 2015-04-08
JIGANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the impact effect of the head, the thickness deviation of the head of the finished steel plate is relatively large, so the thicker part of the head can only be cut off to ensure the uniformity of the thickness of the entire steel plate.
Due to the excessive shearing of the waste edge of the head, the yield of the product is obviously reduced, and a large amount of waste is caused to the production. This is the deficiency of the existing technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] The method for controlling the difference between the steel plate head and the same plate is characterized in that it comprises the following steps:

[0017] 1) Detect the thickness of the steel plate,

[0018] 2) Multiple data points are set on the head of the steel plate to detect the thickness of the steel plate at the data point in real time;

[0019] 3) Roll the steel plate, and set the thickness of the finished steel plate to be rolled. The steel plate with a finished steel plate thickness less than 14 mm enters step 4), and the steel plate with a finished steel plate thickness greater than 14 mm enters step 5);

[0020] 4) During the rolling process of the steel plate, in each rolling pass, according to the thickness of the steel plate measured in step 2), the roll gap width of the rolling rolls is adjusted to eliminate the high points in the data points, so as to realize the alignment of the steel plate head Part of the rolling compensation, to obtain the same ...

specific Embodiment approach 2

[0023] The method for controlling the difference between the steel plate head and the same plate is characterized in that it comprises the following steps:

[0024] 1) Detect the thickness of the steel plate,

[0025] 2) Multiple data points are set on the head of the steel plate to detect the thickness of the steel plate at the data point in real time;

[0026] 3) Roll the steel plate, and set the thickness of the finished steel plate to be rolled. The steel plate with a finished steel plate thickness less than 14 mm enters step 4), and the steel plate with a finished steel plate thickness greater than 14 mm enters step 5);

[0027] 4) During the rolling process of the steel plate, in each rolling pass, according to the thickness of the steel plate measured in step 2), the roll gap width of the rolling rolls is adjusted to eliminate the high points in the data points, so as to realize the alignment of the steel plate head Part of the rolling compensation, to obtain the same ...

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Abstract

The invention provides a steel board end intra-plate gauge deviation control method. Firstly, the thickness of a steel board is detected, multiple data points are arranged on the steel board end and the thicknesses of the steel board at the data points are detected in a real-time mode. The steel board is rolled and a rolling manner is determined according to different thicknesses of a finished steel board, high points among the data points are eliminated in the rolling process, rolling compensation for the steel board end is achieved and steel boards with the same thickness are obtained. According to the steel board end intra-plate gauge deviation control method, real-time adjustment of roller gaps of a rolling mill is achieved, a thickness deviation band of the steel board end is reduced and the yield of products is improved.

Description

technical field [0001] The invention relates to a metallurgical steel rolling control technology, in particular to a method for controlling the difference between the steel plate head and the same plate. Background technique [0002] In the prior art, the well-known technology is that in the production of wide and thick plate products, the production process is an impact load for the rolling mill. Under the condition of high impact load, ensuring the stability of the roll gap in the thick plate rolling process is to ensure the stability of the product. The key to thickness. The general rolling mill control adopts the world's mature AGC control technology, that is, the rolling mill roll gap automatic compensation control technology. However, due to the impact effect of the head, the thickness deviation of the head of the finished steel plate is relatively large, so the thicker part of the head can only be cut off to ensure the uniformity of the thickness of the entire steel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/16B21B38/04
Inventor 王涛张润生李小庚李永亮宋国栋杨淑美杜平张英杰孔雅李复磊魏玲赵文承
Owner JIGANG GRP
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