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The Ideal Control Curves of Low Stress Precision Cropping Experimental Study on Metal Bar

[+] Author Affiliations
S. D. Zhao, R. F. Zhao, B. Zhong, Y. Tang, F. Xu

Xi’an Jiaotong University, Xi’an, Shaanxi, China

Paper No. IMECE2011-65063, pp. 1365-1368; 4 pages
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5492-1
  • Copyright © 2011 by ASME


In this paper, the new low stress precision cropping with a rotary swaging machine is reported (investigated). The basic working principle of the new radial-forging cropping method is discussed in detail. In order to analyze how to improve the quality of the cropped billets and decrease the cropping time, the new low stress precision cropping process technique designs six kinds of control curves including stroke-time and frequency-time to analyze and verify cropping. The experiment of cropping toward the bars that its material is 20Cr is described. Through comparing the different influence on the quality of the cross-section and cropping time that various control curves have, the ideal control curves are obtained. And different kinds of bars are used for the controllable radial impacting experiment. Finally, by comparing analysis, the paper verifies that the ideal control mode is the combination of the “linear-increment” in stroke-time curve and “linear-decrement” in frequency-time curve.

Copyright © 2011 by ASME
Topics: Metals , Stress



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