Control method for pressure of clamping and conveying roller of strip steel coiler

Abstract

The invention discloses a control method for pressure of a clamping and conveying roller of a strip steel coiler. Firstly, in a mathematical calculation model for calculating the pressure of the clamping and conveying roller of the coiler, an output value of the pressure of the clamping and conveying roller is subdivided according to the variant parameter of finished product strip steel thickness; and then according to the site actual strip steel coiling condition, the output value, given by the mathematical calculation model, of the pressure of the clamping and conveying roller is subjected to secondary manual correction according to the finished product strip steel thickness, and the manual correction can be selectively performed on pressure of an operating side and/or a transmission side of the clamping and conveying roller. The production process is flexible, the production efficiency is high, free crossed coiling at different thicknesses is achieved, the control method is suitable for simultaneous organized production of small batch, multiple steel grades and multiple specifications, the coiling stability and the shape coiling quality of strip steel in different thickness specifications are improved, the executing precision and the stability of the pressure of the clamping and conveying roller are guaranteed when finished product strip steel thickness specifications jump substantially, and the as-scheduled quality and quantity guaranteeing delivery of products is guaranteed.

Description

technical field [0001] The invention relates to the technical field of continuous rolling, in particular to a method for controlling the pressure of a pinch roll of a strip coiler. Background technique [0002] As customers are increasingly strict on the quality of hot-rolled steel coils and hot-rolled production lines reduce production costs and are affected by the market environment, iron and steel enterprises need to organize production according to orders, small batches, multiple steel types, and multiple specifications at the same time. Thickness The jump exceeds the technological requirements and standards, and the limit specifications continue to expand. [0003] The pinch roller of the strip coiler is an important part of the downcoiler and plays an important role in the coiling process of the strip: before the strip arrives at the coiler, it runs and waits at a certain lead rate (relative to the strip) The strip plays a certain traction effect on the strip head; wh...

AI Technical Summary

Problems solved by technology

[0006] Due to the inaccurate pressure of the pinch roll during the coiling process or the unadjustable pressure on one side of the pinch roll after the F6 rolling mill throws steel, the coil shape of the F6 rolling mill after the steel throwing is not good, especially when coiling thin-gauge strip steel. The coil shape cannot be controlled when rolling thin material, which seriously restricts the production of thin strip steel