Steel plate straightening method

A steel plate and straightening technology, applied in the field of metallurgy, can solve problems such as the difficulty of steel plate straightening machines, and achieve the effects of avoiding human error, stabilizing production and reducing labor intensity.

Inactive Publication Date: 2018-11-13
BAOTOU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the steel plate reaches the position 9 meters in front of the straightening machine, the roll gap of the straightening machine is set according to the calculated value of the second-level model. If the steel plate is warped, it will be difficult for the steel plate to bite into the straightening machine, and the steel plate cannot be used for straightening. Straightening machine for straightening steel plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The steel plate straightening method according to the embodiment of the present invention is used in a steel plate straightening machine, comprising: judging the unevenness of the head of the steel plate; if the unevenness is greater than a preset value, the roll gap of the steel plate straightening machine is opened to be greater than the unevenness The steel plate passes through the steel plate leveler at the first preset speed. When the tail of the steel plate passes through the steel plate leveler, the roll gap drops to the preset roll gap position, so that the steel plate moves in the opposite direction, and the steel plate is straightened. The straightening machine reverses straightening; if the unevenness is less than the preset value, the steel plate is straightened forward by the steel plate straightening machine.

[0018] Through reverse straightening, it overcomes the problem that the straightening machine is difficult to bite when the steel plate is warped, a...

Embodiment 2

[0020] The thickness of the steel plate is 16mm, and the steel type is Q345E. There are warping defects at the head of the steel plate after rolling, and the unevenness of the head of the steel plate is 70-100mm by visual inspection. It is difficult to pass through the straightening machine. , the roll gap of the straightening machine is immediately opened to the 100mm roll gap position to ensure that the steel plate passes through the straightening machine safely and smoothly. mm over-straightening amount to straighten the steel plate. After the first pass of straightening is completed, the reverse straightening and conveying button lights flash, and the operator selects the reverse straightening button, and the steel plate performs reverse straightening automatic operation. When the steel plate returns When reaching the front of the straightening machine, the straightening and conveying function button lights flash, and the operator selects the conveying button according to t...

Embodiment 3

[0022] The thickness of the steel plate is 25mm, and the steel type is Q550D. After the steel plate is rolled, there is a slight warp. After the ACC accelerated cooling, the warping of the head of the steel plate is aggravated. -80mm, it cannot pass through the straightening machine smoothly, and there is a possibility of hitting the upper straightening roller. The operator of the straightening machine chooses the empty reverse straightening method, and the roll gap of the straightening machine is immediately opened to the 100mm roll gap position, waiting for the steel plate to pass through Straightening machine, when the tail of the steel plate passes through the straightening machine, the roll gap drops to 24.76mm calculated by the straightening machine model, the reverse straightening and conveying button lights flash, the operator selects the reverse straightening button, and the steel plate executes Reverse straightening automatic operation, when the steel plate returns to...

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Abstract

The invention provides a steel plate straightening method which is used for a steel plate straightening machine. The steel plate straightening method includes the steps that the roughness of a head ofa steel plate is judged; if the roughness is greater than a preset value, then a roll seam of the steel plate straightening machine opens to the position of a first roll seam which is greater than the roughness, and the steel plate passes through the steel plate straightening machine at a first preset speed; after the tail portion of the steel plate passes through the steel plate straightening machine, the roll seam is lowered to the position of a preset roll seam to make the steel plate move in an opposite direction, and then reverse straightening is carried out on the steel plate through the steel plate straightening machine; and if the roughness is less than the preset value, then forward straightening is carried out on the steel plate through the steel plate straightening machine. According to the technical scheme of the steel plate straightening method, by the reverse straightening, the problem of difficult biting of the straightening machine when a steel plate head is cocked issolved; after being straightened reversely, the steel plate is moved into a next process in a forward direction, and upstream and downstream processes are smoothly connected without the need for adding additional invest; the whole steel plate straightening process is automatically controlled with no manual intervention required, so that the labor intensity of workers is reduced, and the possibility of the accident of equipment damaging caused by man-made operational errors is effectively lowered.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for straightening steel plates. Background technique [0002] The straightening process of the steel plate is an indispensable and important link in the steel plate production process. The purpose of steel plate straightening is to eliminate various shape defects of the steel plate, such as: single-sided wave shape, double-sided wave shape, middle wave shape, head warping, and tail warping. The straightness of the steel plate after straightening must meet the national or enterprise delivery standards and meet the user's requirements. [0003] When the steel plate reaches the position 9 meters in front of the straightening machine, the roll gap of the straightening machine is set according to the calculated value of the second-level model. If the steel plate is warped, it will be difficult for the steel plate to bite into the straightening machine, and the steel plate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D1/02
CPCB21D1/02
Inventor 赵超李浩温利军高军韩玉龙杨丛军郭军王民张晨旭
Owner BAOTOU IRON & STEEL GRP
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