Method and device for measuring length of non-cold section of high-speed wire

Abstract

The invention provides a method and a device for measuring the length of a non-cold section of a high-speed wire. According to the characteristics of surface temperature difference of a high-speed wire rolled piece caused by water penetration and complete water penetration during water penetration cooling of the high-speed wire, a high-speed linear array infrared temperature measurement module and an analysis module are used for monitoring and analyzing the change characteristics of the surface temperature of the high-speed rolled piece along with time, the duration corresponding to the non-cold section of the rolled piece is obtained, online measurement of the length of the non-cold section of the high-speed wire is achieved in combination with the movement speed of the rolled piece, then a basis is provided for accurate shearing of the non-cold section of the rolled piece, and the quality problem of subsequent products caused by incomplete shearing of the non-cold section of the rolled piece and the problem that the yield of the rolled piece is reduced caused by over-shearing of the non-cold section of the rolled piece are solved.

Description

technical field [0001] The invention belongs to the technical field of high wire production, and in particular relates to a method and a device for measuring the length of a non-cooling section of a high wire. Background technique [0002] The non-cooling section is an unavoidable problem caused by water cooling in high-line production. No water penetration or incomplete water penetration will cause the non-cooling section or incomplete cooling section. Accurately locating the length of the non-cooling section and cutting it off is the guarantee for subsequent An important part of product quality. The existing method of judging the uncooled section based on observing the surface state of the rolled piece can only judge the uncooled section caused by water penetration or not, and it is difficult to accurately locate the uncooled section caused by incomplete water penetration. In addition, this method also has the problems of high labor intensity, time-consuming, and easily a...

AI Technical Summary

Problems solved by technology

The existing method of judging the uncooled section based on observing the surface state of the rolled piece can only judge the uncooled section caused by water penetration or not, and it is difficult to accurately locate the uncooled section caused by incomplete water penetration

In addition, this method also has the problems of high labor intensity, time-consuming, and easy to be affected by the operator's experience

The disadvantages of the above-mentioned method of manually observing the length of the uncooled section may cause the problem of insufficient shearing or over-shearing of the uncooled section. Insufficient shearing will cause quality disputes, and over-shearing will lead to a decrease in the yield of wire rods

In the patent with the publication number CN102671961A, a method for detecting the length of the uncooled section of the hot-rolled strip head is disclosed. The method obtains the "red head" uncooled section by taking pictures. It is difficult to cover the entire uncooled section area by taking a single photo. Although taking multiple photos can solve the problem of non-cold section coverage, there is also the problem of loss of information in the non-cool section within the interval between two shots. The measurement problem of the non-cooling section of the line

Images