Axial displacement variable convexity roll shape design method and device

Abstract

The invention discloses an axial displacement variable convexity roll shape design method and device, and relates to the technical field of roll shape design. According to a1, a2 and a3 in a roll shape equation, a roll body two-end roll diameter difference equation and a roll body middle part maximum roll diameter difference equation are constructed, a comprehensive roll diameter difference equation is constructed according to an adjusting coefficient, the roll body two-end roll diameter difference equation and the roll body middle part maximum roll diameter difference equation, and a1, a2 and a3 which enable the comprehensive roll diameter difference to be minimum are solved according to the comprehensive roll diameter difference equation. The maximum roller diameter difference of the middle part of the roller body of the designed roller shape is small, so that the linear speeds of all points of the roller body in the middle of the roller tend to be consistent, and the plate shape quality is ensured; on the basis, the roller diameter difference between the two ends of the roller body is small, the radial grinding amount is reduced while the product quality is guaranteed, and the service life of the roller is prolonged; the linear speed of each point of the roller body in the middle of the roller is consistent, the radial grinding amount is small, and the plate shape quality and the service life of the roller are both considered.

Description

technical field [0001] The present invention relates to the technical field of roll shape design, in particular to a method and device for designing a roll shape with axial displacement and variable crown. Background technique [0002] Continuously variable crown roll forming has become one of the most important flatness control methods in the field of strip rolling. The continuously variable crown roll shape can replace the conventional roll shape and meet the requirements of shape control under different rolling parameters (rolling force, bandwidth, etc.) The number of roll changes is greatly reduced, and the rolling schedule design is more flexible. Continuously variable crown profiles increase the flexibility of rolling schedules and production schedules, thereby increasing mill utilization. [0003] When designing the roll shape by the traditional design method, due to the limitation of its principle, it is impossible to design the roll shape with the same linear spee...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problem that the roll shape designed in the prior art cannot take into account the quality of the plate shape and the life of the roll by providing the roll shape design method and device with axial displacement and variable crown

Images