A kind of intelligent control method of section steel pre-bending and section steel cooling bed using the same

Abstract

The invention belongs to the technical field of steel rolling in the metallurgical industry, and discloses an intelligent control method for pre-bending of section steel and a section steel cooling bed applying the same. The steps of the method include: collecting the initial shape and initial temperature value of the profile steel on the roller table at the entrance of the cooling bed body to establish an initial profile steel pre-bending model; Freely bend the curve, and calculate the pre-bending line parameters of the section steel according to the free bending curve; control the feeding pre-bending trolley to reclaim the material, and control the feeding pre-bending trolley to move to the pre-bending end position according to the pre-bending line parameters to complete the pre-bending. The section steel is placed on the cooling bed body for natural cooling, and the actual bending curve of the section steel is collected in real time to judge the matching degree between the actual bending curve and the preset curve. If it does not match, the position data of the section steel is collected to obtain the correction data of the actual bending curve information, and correct the parameters of the pre-bending line according to the correction data information.

Description

technical field [0001] The invention belongs to the technical field of steel rolling in the metallurgical industry, and particularly relates to an intelligent control method for pre-bending of section steel and a section steel cooling bed using the same. Background technique [0002] In the section steel hot rolling production line in the metallurgical field, during the cooling process of the section steel on the cooling bed, if the section steel produced is a section steel with a long asymmetric section, the shrinkage rate is usually different due to the asymmetry of the section. Large bending deformation occurs in the section steel, which directly affects the subsequent straightening process of the section steel. Even quality defects such as cracks will occur in the section steel due to large bending deformation. Therefore, it is usually necessary to pre-bend the section steel, and then cool it through a cooling bed, so that the section steel can ensure better straightnes...

AI Technical Summary

Problems solved by technology

However, this method has high labor costs and is cumbersome, and the accuracy of pre-bending is low. At the same time, due to seasonal changes, the influence of ambient temperature, and the difference in initial equipment conditions, it is often difficult for manual operation to effectively control the appropriate amount of pre-bending. Make the section steel unable to meet the requirements of relatively good straightness

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