Steel plate straightening method

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...

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