Recycling Method of Inner Ring of Supporting Roller Supporting Bearing

Abstract

The invention discloses a waste support roller mated bearing inner ring reutilization method. The method comprises the steps of reutilization judgment, polishing, reutilization, assembly and grinding;and the reutilization method is a bearing gear roller neck size amplifying method or a bearing inner ring inner hole surface chromium plating method. The bearing gear roller neck size amplifying method is to design the bearing gear roller neck amplifying size X according to the bearing gear roller neck drawing design diameter D, the polished bearing inner ring inner hole diameter d and the initial designed interference magnitude delta, and the calculating formula is X=d+delta-D; and the bearing inner ring inner hole surface chromium plating method is to design the bearing inner ring inner hole chromium plating layer thickness T according to the bearing gear roller neck actual diameter M, the polished bearing inner ring inner hole diameter d and the initial designed interference magnitudedelta, and the calculating formula is T=d+delta-M. The method can realize reutilization of waste support roller mated bearing inner rings to maximize the resource utilization.

Description

technical field [0001] The invention belongs to the technical field of supporting roller accessories, and in particular relates to a method for reusing the inner ring of a supporting roller supporting bearing for scrapped supporting rollers. Background technique [0002] The back-up roll is an important part in the rolling mill, and the inner ring of the bearing is an important supporting part of the back-up roll. [0003] The supporting bearing inner ring of the backup roll and the bearing gear roll neck are assembled by interference fit to ensure that the inner ring of the bearing does not move in the circumferential direction and axial direction during the rolling process. The manufacturing material of the bearing inner ring is generally made of carburized bearing steel, which is processed and manufactured by a special heat treatment process, so that the inner and outer surfaces of the bearing inner ring have high hardness and wear resistance, and the core has good streng...

AI Technical Summary

Problems solved by technology

[0004] Back-up rolls will be scrapped during use due to large-scale peeling off of the roll body, reduction of the hardness of the roll body to the scrap hardness, or use to the scrap size. The price of the ring is relatively high. If the inner ring of the bearing is scrapped together with the support roller, it will greatly increase the production cost of the steel plant and cause a waste of resources.