Loop control method for wire tandem rolling and device

Abstract

The invention discloses a method and a device for controlling a movable sleeve for the continuous rolling of a wire material. The method comprises: a guide wheel positioned between two adjacent rolling machines conducts the wire material to a rolling machine; a sleeve removing sensor arranged in an outlet of the rolling machine detects a reaching signal in the head of the wire material and emits a sleeve removing command; the sleeve is removed through a sleeve removing auxiliary cylinder; a programmable controller is adopted to adjust the speed of the rolling machine and control the stretching of the sleeve removing auxiliary cylinder for carrying out the sleeve removing according to calculated raising speed curve parameters of the rolling machine; and through a closed-loop PID digital control algorithm, the speed of the rolling machine is adjusted to control the height of the movable sleeve. The device comprises a first rolling machine, a second rolling machine, a movable sleeve scanner, a sleeve removing sensor, an auxiliary cylinder, and guide wheels; the movable sleeve scanner is positioned on the highest point of removing the movable sleeve between the first rolling machine and the second rolling machine; the sleeve removing sensor is arranged in the outlet end of the second rolling machine; the sleeve removing auxiliary cylinder is positioned in the outlet end of the first rolling machine; and the positions between the first rolling machine and the second rolling machine respectively close to the rolling machines are provided with the guide wheels. The device has the characteristics of simple structure, convenient use, and the like.

Description

technical field [0001] The invention relates to the continuous rolling technology of wire rods, in particular to a looper control method and device for continuous rolling of wire rods which can effectively reduce the overshoot of looper opening. Background technique [0002] The production process of the continuous rolling production line is as follows: After the steel billet is heated to 1100 degrees by the heating furnace, it is rolled by more than 10 rolling mills successively through rough rolling, intermediate rolling, and finishing rolling to become a finished wire rod. In order to avoid affecting the quality of the wire rod due to drawing steel between two adjacent stands during the rolling process, a looper device is usually installed between each finish rolling stand. In the previous looper control method, a large overshoot often occurred during the looping process, which affected the normal steel biting and made the entire steel material scrapped. Contents of the...

AI Technical Summary

Problems solved by technology

In the previous looper control method, a large overshoot often occurred in the process of setting up the looper, which affected the normal biting of the steel and made the entire piece of steel scrap

Images