Abstract
The article presents a technique for experimental studies of microstructure of microsections during rolling of ball pins made of 38KHGNM and 40KH steels. Moreover, photographing was carried out in the pole and equatorial parts of the ball pin head, as well as at the cross-cut end. When analyzing the photographs of microsections, it was concluded that after the final rotary rolling, deformation grinding of the grains occurred in the structure of ball pins.
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