Aluminum alloy hot-rolled strip plate shape control method

Abstract

The invention provides an aluminum alloy hot-rolled strip plate shape control method applied to the aluminum hot finish rolling process of a strip rolling machine plate shape control system. The control method comprises the steps that inlets of one or more rolling racks are selected as strip temperature measuring points in an aluminum rolling channel, high-temperature strip detectors are installedat the strip temperature measuring points, in the aluminum rolling process, when strips pass through the strip temperature measuring points, the high-temperature strip detectors detect the transversetemperature of the strips at the inlets of the rolling racks and feed detected data back to the rolling machine plate shape control system, the rolling machine plate shape control system controls therolling racks in the aluminum rolling channel according to the detected data, feedforward adjusting is conducted on the strip plate shape through the rolling racks, and then the strip finished product plate shape in the aluminum hot finish rolling process can be adjusted and controlled. According to the aluminum alloy hot-rolled strip plate shape control method, the plate shape control precisioncan be high, the cost can not be increased too much, and the control requirements for different quantities of the hot finish rolling racks can be met.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal processing, in particular to a method for controlling the profile of an aluminum alloy hot-rolled strip. Background technique [0002] Due to the high efficiency, rapidity and low cost of aluminum alloy hot rolling production, large domestic aluminum alloy hot rolling factories have sprung up, and the market competition has become more intense. Hot-rolled coils with high surface quality and good shape have obvious competitive advantages and can win the recognition of customers. Therefore, whether it is 1+1, 1+2, or more trains for finishing rolling, more attention is paid to the hot-rolled plate shape. [0003] But in fact, at present, the shape control of the hot rolling mill row mainly depends on the feed-back control, that is, through the shape detection of the exit side of the last stand, the shape information is fed back to the rolling mill control system, and the roll gap is adjust...

AI Technical Summary

Problems solved by technology

This control method has two major disadvantages: one is high cost, the shape detector is expensive, and the maintenance cost is high; the other is that when there are two or more finishing stands, only the first stand Pre-control does not significantly help the shape control of the last stand, and the most critical aspect of hot rolling lies in the shape control of the last stand

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