Original scientific paper

Formation mechanism and control of the spiral marks of three-roll skew-rolled hollow axles

S. Zhang ; . Ningbo University, School of Mechanical Engineering and Mechanics, Ningbo, China
X. D. Shu ; . Ningbo University, School of Mechanical Engineering and Mechanics, Ningbo, China
Y. X. Xia ; . Ningbo University, School of Mechanical Engineering and Mechanics, Ningbo, China
J. T. Wang ; . Ningbo University, School of Mechanical Engineering and Mechanics, Ningbo, China

Abstract

The spiral marks is one of the main surface quality defects of the three-roll skew rolled hollow axles. In order to eliminate the spiral marks, it is necessary to clarify the cause of the spiral marks on the surface of the rolled piece. Based on the analysis of the kinematics of the three-roll skew rolled hollow axles, the spiral marks is caused by the spiral pitch of the rolled piece being larger than the width of the finishing section of the roller. Increasing the rotation speed of the roller can reduce the spiral pitch of the rolled piece, thereby avoiding the appearance of spiral marks. The correctness of the proposed condition for preventing the defect of spiral marks is verified by simulation.

Keywords

three-roll skew rolling; 30CrMoA steel hollow axles; spiral marks; simulation

Hrčak ID:

246087

URI

https://hrcak.srce.hr/246087

Publication date:

4.1.2021.

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