Plain-barreled roll rhomboidity rolling method

Abstract

The invention relates to a flat roll off-square rolling method, which belongs to the technical field of steel rolling and is used to solve the problem of forming and rolling a rolled piece by using a non-perforated flat roll. It uses square section continuous casting slabs as raw materials, and consists of two steps: flat roll off-square rolling and diamond-square pass rolling. Measure and use the inclined guide device to make the rolled piece produce off-square amount. After 4 to 8 passes of rolling, the rolled piece forms a diamond-shaped section with the increase of off-square amount, and then enters the diamond-square pass rolling step. The pass rolling step adopts three passes of diagonal square pass, rhombus pass and diagonal square pass successively to obtain a rolled piece with regular square section. The design concept of the present invention is reversed from the existing flat roll rolling method, cleverly utilizing the off-square of the rolled piece in the flat roll rolling, so that the rolled piece forms a diamond-shaped section, and then enters the diamond-square pass to roll out square steel . The method successfully solves the problem of crooked and inverted steel in the rolled piece in the existing flat roll forming rolling technology.

Description

technical field [0001] The invention relates to a steel rolling method, in particular to a method for rolling square steel with a square-section continuous casting slab and rolling bars and wires in the rough rolling stage using flat rolls for off-square rolling, which belongs to the technical field of steel rolling. Background technique [0002] Flat roll rolling is a new rolling technology, which refers to the use of flat rolls without holes to form and roll the rolled piece. The flat roll rolling technology has been researched and reported at home and abroad since the 1980s. This technology has remarkable effects in reducing rolling costs, improving rolling mill efficiency and reducing rolling energy consumption. The main problem of the existing flat roll rolling technology is that in the rolling process, due to the use of flat rolls without side wall restrictions, the rolled piece is prone to skew, that is, "off-square" or even inverted steel. If the amount of square re...

AI Technical Summary

Problems solved by technology

The main problem of the existing flat roll rolling technology is that in the rolling process, due to the use of flat rolls without side wall restrictions, the rolled piece is prone to skew, that is, "off-square" or even inverted.

In order to solve the above problems, methods such as penetrating guide plates and rolling guide plates are used in flat roll rolling. restricted

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