Method for achieving automatic pressure leveling of wide and thick plate

Abstract

The invention provides a method for achieving automatic pressure leveling of a wide and thick plate, and belongs to the field of thick plate plastic forming. The method includes the steps that firstly, characteristic parameters of a plate material are obtained; secondly, a plate pushing device in front of a machine pushes the plate to move in the direction of a flattening machine, and parameters such as the original curvature of the plate are obtained through a laser and visual detection device; thirdly, the plate stops moving after arriving at the designated position, and a base plate robot places a lower base plate and an upper base plate according to position signals; fourthly, a flattening force is calculated through a flattening force model, and pressure leveling is started; and fifthly, after pressure leveling is finished, the plate pushing device in front of the machine pushes the plate to continue to move forwards, whether the curvature meets the requirement or not is detectedthrough an image and visual detection device behind the machine, pressure leveling of the next flattening area is conducted if the requirement is met, and if the requirement is not met, the plate returns to the original flattening position under the effect of the plate pushing device in front of the machine and a plate pushing device behind the machine, and then the process returns to the third step and secondary pressure leveling is conducted according to the measured curvature.

Description

technical field [0001] The invention relates to the technical field of wide and thick plate rolling, in particular to a method for realizing automatic pressure leveling of wide and thick plates. Background technique [0002] Hot-rolled wide and thick plates may have shape quality problems after rolling. In order to ensure the straightness of the plates, the plates need to be straightened or corrected. Generally speaking, plates with a thickness of less than 40mm can be straightened by a roller leveler, while plates with a thickness of more than 40mm are generally pressure leveled by a pressure leveler (referred to as a flattener). [0003] At present, the production of flattening machines in the world is mainly dominated by companies such as Fuji Vehicle Co., Ltd. of Japan, Kawasaki Heavy Industries of Japan, Greucot Loire of France, and Siempekamp of Germany. The design and development of leveling equipment in my country began in the 1960s. Although the leveling equipment ...

AI Technical Summary

Problems solved by technology

After analysis, one of the key technical bottlenecks restricting automatic pressure leveling is that it is impossible to accurately calculate the stroke or flattening force of the flattening machine pressure head according to the plate convexity or original curvature

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