On-line control method and system for high-precision flat surface roughness of cold-rolled strip steel

Abstract

The invention relates to a cold-strip steel high-precision plate shape surface roughness on-line control method and system. The shortcoming in a conventionally-adopted method for monitoring the strip steel surface roughness through spot check sampling, off-line analysis testing and on-line adjusting production processes at present is overcome. The method that, on a cold-strip steel continuous treatment unit, the strip steel surface roughness is detected on line, temper rolling force is adjusted in real time according to the deviation value between the surface roughness detection value and a target value, meanwhile, in order to prevent the strip steel mechanical performance and the plate shape from being influenced basically, the temper tension and the temper roller bending force are adjusted correspondingly, and on-line control over the strip steel surface roughness is achieved is achieved; and the control accuracy of the cold-strip steel surface roughness can be improved, and the requirement of downstream users is better met.

Description

technical field

[0001] The invention relates to the technical field of strip steel cold rolling, in particular to an on-line control model, control method and system for high-precision flat surface roughness of cold-rolled strip steel. Background technique

[0002] Downstream users of the iron and steel industry have increasingly strict quality requirements for cold-rolled strip products. Surface roughness is very important for cold-rolled sheets. It is a key factor affecting the formability of steel sheets and an important factor for the quality of cold-rolled products. One of the indicators. At present, in the production practice of cold-rolled strip steel, the usual way to monitor the surface roughness of the strip steel is to carry out the monitoring of the surface roughness of the strip steel at the outlet of the relevant cold-rolled post-processing unit (such as a continuous hot-dip galvanizing unit or a tempering unit, etc.). Sampling is taken, and then the sample is...

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