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The results of the experimental study of the termal cycle of many-electrode welding of the solid wheel`s comb and its influences in work upon structurization in zone of the termal influence are presented.

The article proposes a numerical-analytical method based on the boundary element method (Method of Boundary Elements Technology), which used to assess of change patterns of temperature fields in the working fluid in hydro-friction vibration damper telescopic view when the ambient temperature changes. This method takes into account the physico-mechanical properties of the working fluid and the effect of corrosion pouring temperature, ambient temperature, the speed of electric rolling stock and the working liquid filling height.