Multidirectional rolling strong deformation process

Abstract

The invention discloses a multidirectional rolling strong deformation process. The multidirectional rolling strong deformation process is used for carrying out multipass circulating multidirectional rolling on a plate, and specifically comprises the following steps that a feeding mechanism feeds the plate between a first pair of rollers along the feeding direction, so that the thickness of the plate is reduced, and the width size of the plate is increased; the plate continues feeding between a second pair of rollers in the feeding direction, a pair of side spinning wheels are oppositely arranged on the two sides of the second pair of rollers, the width and thickness of the plate are recovered to the initial size, and first-pass multi-direction rolling is completed; and then the first procedure of the first pass is repeated, finally, a fourth pair of rollers with the surfaces alternately provided with protrusions and grooves are used for rolling, and the rollers can enable the local area of the plate to be subjected to repeated thinning and thickening cyclic deformation in a rolling process. According to the multidirectional rolling strong deformation process, overall multi-directional cyclic deformation rolling and local cyclic deformation rolling are conducted on the plate, an excellent structure which is higher in grain refinement degree and uniform in distribution can be obtained, and the comprehensive performance of the plate is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of roll technology, in particular to a multi-directional rolling strong deformation process. Background technique [0002] The plate produced by ordinary unidirectional rolling has a high degree of anisotropy, and the anisotropic mechanical properties of the plate are not uniform. In order to improve the subsequent plastic forming ability of rolled-formed plates, researchers from various countries have successively proposed a variety of rolling processes, such as cross-roll rolling, cross-rolling, large-strain rolling, multi-directional rolling, etc. Among them, the multi-directional rolling process is a strong deformation process that can effectively achieve the microstructure refinement of the material. When the plate is rolled and formed, the plate is rolled from two or more directions in sequence to promote the material Recrystallization occurs, achieving grain refinement of the material. The multi-dir...

AI Technical Summary

Problems solved by technology

The multi-directional rolling process can be applied to improve the microstructure and properties of various steels and difficult-to-deform materials, but there is still little research on the multi-directional rolling process.

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