Paper Title:
A Study on Warm Micro Backward Extrusion of SUS 304 Stainless Steel
  Abstract

A metal forming system comprising an electrical heater, capable of conducting processes at elevated temperatures, was developed to perform micro backward extrusion processes of SUS 304 stainless steel. Two punches with diameters of 1.6 mm and 1.8 mm were used to extrude the billets inside the die with an inner diameter of 2 mm. All processes were lubricated with water-based graphite and conducted under isothermal conditions at 400 °C. The results show that the developed extrusion system can be used to produce the stainless steel components with a micro cup-shaped profile. Moreover, the variation in the rim height of the cups produced by the 1.8 mm diameter punch is greater than the one by the 1.6 mm diameter punch. The results show that a decrease in the clearance between the punch and die could lead to an increase in the inhomogeneity of material flow in the micro backward extrusion processes.

  Info
Periodical
Edited by
Daizhong Su, Kai Xue and Shifan Zhu
Pages
139-142
DOI
10.4028/www.scientific.net/KEM.486.139
Citation
C. C. Chang, D. H. Nguyen, H. S. Hsiao, "A Study on Warm Micro Backward Extrusion of SUS 304 Stainless Steel", Key Engineering Materials, Vol. 486, pp. 139-142, 2011
Online since
July 2011
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Price
$32.00
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