IMPLEMENTATION OF COLD ROLLING PROCESS IN BEARING INDUSTRY

Abstract

This paper deals with implementation of various strategies in production of bearings and their influence on the consecutive operations. Shaping of bearings via cold rolling in compared with conventional process usually employed in bearing industry based on machining cycles on hot rolled parts. Such aspects as structure, stress state before and after heat treatment, rings deformations after heat treatment (hardening and consecutive annealing) and cutting forces during hard turning are investigated. The results show that investigated strategies produce quite different stress state and the corresponding deformation during heat treatment. Deformations of rings due to heat treatment regime cause significant instability of cutting force components. On the other hand, influence of different strategies on stress state after heat treatment as well as hard turning is minor.

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