Abstract and keywords
Abstract (English):
The substantiation of the new technology of multi-cycle racer running-in is shown. A technological method for racer resi-dual stresses removal by means of multi-cycle centerless running-in is described. For the computation of running-in basic time which is necessary for the complete removal of residual stresses there is developed a simulator. A simulator takes into account geometrical and mechanical conditions of the contact of rollers and a racer, physical-mechanical and geometrical parameters of a racer. On the basis of the simulator obtained there is carried out an investigation of the dependence of residual stress upon the duration of racer multi-cycle running-in for various stressed states. It is established that for the efficient stress removal the running-in time must be optimum. If time is lesser than optimum, then there is no a complete removal of residual stresses. At processing time longer of optimum one after a complete removal of residual stresses the accumulation of new residual stresses takes place.

Keywords:
residual stresses, multi-cycle running-in, racer, stress relaxation.
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References

1. Podzey, А.V., Summa, А.N., Yevstigneyev, М.I. Technological Residual Stresses / under the editorship А.V. Podzey. ‒ М.: Mechanical Engineering, 1973. ‒ pp. 216.

2. Blanter, М.Е. Theory of Heat Treatment. ‒ М.: Metal-lurgy, 1984. ‒ pp. 327.

3. Ragulskys, К.М., Stulpinas, B.B., Tolutis, К.B. Vibra-tion Ageing. ‒ L.: Mechanical Engineering, 1987. ‒ pp. 72.

4. Radchenko, V.P., Saushkin, М.N. Creep and Relaxation of Residual Stresses in Reinforced Structures. ‒ М.: Mechanical Engineering, 2005. ‒ pp. 226.

5. Birger, I.А., Shorr, B.D., Iosilevich, G.B. Machine Parts Durability Computation: reference book. ‒ М.: Mechanical Engineering, 1993. ‒ pp. 640.

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