Plate shape and thickness-controlling rolling method and corresponding gap-less roller mill

Abstract

The plate shape and thickness-controlling rolling method is to use "move work roll" roller mill, where the gap is changed to regulate the plate shape and thickness via transversely shifting and symmetrizing crossed work rolls. The roller mill includes frame, hold down mechanism, upper support roll mechanism, upper work roll mechanism, lower support roll mechanism, lower work roll mechanism, and cross shift mechanism comprising waist block and shift cylinder. The cross shift mechanism is used to replace available expensive automatic thickness controller and results in simple roller mill structure, low cost, low pressure for plate shape and thickness control and raised control precision. In addition, using the hold down cylinder, the waist block and the shift cylinder can realize gap-less rolling.

Description

Technical field [0001] The invention relates to a rolling method for controlling the shape and thickness of rolled plates and strips in the metallurgical machinery industry, and a gapless rolling mill suitable for the method, namely a Move Work Roll rolling mill, referred to as MWR rolling mill. Background technique [0002] At present, the controllable thickness and shape of four-high rolling mills for rolled plates and strips at home and abroad are all occupied by foreign proprietary technology, such as: CVC (Continuous Variable Crown) rolling mill produced by German SMS company, and PC from Japan Mitsubishi Corporation (Pair Crossed rolls) rolling mills, etc. The CVC rolling mill uses S-shaped upper and lower work rolls to move the work rolls axially to adjust the flatness. However, this type of rolling mill requires a special grinder and software to grind the S roll shape of the work roll. Special control software is used. High cost and difficult processing. The PC rolling mi...

AI Technical Summary

Problems solved by technology

[0003] In addition, in order to replace the work roll and the back-up roll in the existing rolling mill, there is a certain gap between the work roll and the back-up roll chocks and the frame, so it is easy to generate vibration during rolling, and at the same time affect the shape and thickness of the plate. control precision

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