Online calculating method for wrap angle of cold-rolled strip steel plate shape roll

Abstract

The invention provides an online calculating method for a wrap angle of a cold-rolled strip steel plate shape roll. The method comprises the following steps: 1) after beginning winding, measuring real-time linear velocity of an outlet strip steel online by using a laser velocimeter, and calculating a real-time passing length of the strip steel; 2) after the plate shape roll is put into online detection, figuring out an initial diameter of a steel coil by using an equal-area method; 3) periodically reading measured values of the laser velocimeter and a pulse generator, and figuring out a real-time steel coil diameter; 4) checking validity of the real-time steel coil diameter so as to obtain a steel coil diameter output value; and 5) calculating a real-time wrap angle value according to an actual steel coil winding method and the steel coil diameter output value. According to the invention, extended functions of the exiting hardware equipment of a cold rolled plate shape control system are sufficiently performed; a high-accuracy and real-time continuous strip steel winding diameter is indirectly figured out by effectively utilizing a direct physical relation between the linear velocity of the strip steel and rotation speed of a winder; moreover, an online checking link of a strip steel winding diameter calculated value is provided, so that the reasonability of the calculated value is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of shape control of cold-rolled steel strips, and in particular relates to an online calculation method for wrap angles of cold-rolled steel strip shape rolls. Background technique [0002] With the development of my country's national economy, the demand and quality requirements for cold-rolled strip products are significantly increasing. For their own economic benefits and market competitiveness, cold rolling enterprises have invested a lot of manpower and material resources in the research and development of rolling process quality control technology. In the quality assessment indicators of cold-rolled strip products, the shape quality is a very important aspect. In order to improve the shape quality of strip steel products, advanced cold rolling production units are generally equipped with a shape control system to realize the online control function of the shape. To realize the on-line control of the ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an online calculation method for the wrapping angle of a cold-rolled strip steel plate shape roll, to solve the distortion of the plate shape detection result due to the inaccurate calculation of the wrap angle of the strip steel plate shape roll in the cold-rolled strip steel production process, Technical problems leading to poor strip shape control at export

Images