Abstract
Residual stress will be in the thin wall bearing rings after they are machined. The residual stress may change the organizational performance and dimension of the bearing rings, and reduce the rate of qualified products resulting in loss of product quality. It has been proposed recently that magnetic treatment is very promising in reducing the residual stress in workpieces (Benson, R.F. (2000) and. JiríHájek (2015) reported). Thus, in the paper, an intermediate frequency experimental device is designed and built to study the effect of this treatment. By comparing the diameter variation of thin wall bearing rings before and after the magnetic treatment, it is shown that the intermediate frequency magnetic treatment is effective in reducing the residual stress in thin-walled bearing rings. The diameter variation was reduced from 0.005mm to 0.009mm after the treatment. At the same time, based on these experimental studies, the optimal design and operation parameters of the intermediate frequency magnetic experimental device are developed.
