Online thickness measurement and control method for metal alloy sheet strip hot rolling mill

Abstract

The invention discloses an online thickness measurement and control method for a metal alloy sheet strip hot rolling mill, which comprises the following steps that: a laser-camera method is used for thickness measurement and a thickness signal is input to a thickness adjustment AGC system after being converted so as to realize the control over the thickness precision of a hot rolled sheet strip; a laser source is projected onto a rolled piece (4), laser points are focused on carrying rollers on roller table, and an optical scanner (7) is arranged on a part which takes central line of rollers,before or behind a machine frame, on the roller table as a mirror image; a scanned data signal is input into the thickness adjustment AGC system of a computer to measure the actual thickness of the rolled piece (4); and a hydraulic system pushes a lower rolling work roll (6) of the hot rolling mill to perform closed-loop timely regulation of a position for pressing with upper rolling work roll (5) of the hot rolling mill to realize the precision control of the final rolled thickness of the rolled piece (4), as well as labor and material conservation and labor intensity reduction.

Description

technical field [0001] The invention belongs to the field of metal pressure processing and manufacturing, and relates to an online thickness measurement and control method for a metal and alloy strip hot rolling mill. Background technique [0002] At present, the copper strip hot rolling mill is one of the important equipments of the copper and copper alloy strip production line. For a long time, due to the complex composition of various copper alloys, the uneven distribution of oxide skin on the surface after heating, and some alloys even contain sufficient lead elements, which makes the penetration ability of rays to copper alloy rolled parts worse. Therefore, if the ray-type thickness gauge commonly used in steel hot rolling mills is used on copper strip hot rolling mills, the required ray power is too large, which will easily cause difficulties in making equipment; the scattering of rays will seriously affect the health of operators, and cannot Accurately measure the th...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that there is no available thickness gauge in the copper strip hot rolling mill, which has always affected the yield and product quality of the hot copper strip hot rolling mill, the invention provides a method for online thickness measurement and control of the metal and alloy strip hot rolling mill method, and can instantly and accurately display and record the actual thickness of the strip during the rolling process in the computer, and feed it back to the AGC system to adjust the thickness deviation

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