Abstract
The results of residual stress definition after a valve unit diamond smoothing of high-pressure fittings are shown. In the paper there is used Barkhausen noise method allowing the definition of the residual stress level at a great depth as compared with the X-ray method. There is presented a procedure for the definition of residual stresses according to a ratio of a magnetoelastic parameter – deformation. The advantage of the diamond smoothing as a method of FSD allowing the decrease of tensile residual stresses and the increase compression stresses on a contact surface of fittings units is shown.
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