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http://dx.doi.org/10.5228/KSPP.2005.14.9.772

Forming Characteristics of the Forward and Backward Tube Extrusion Using Pipe  

Kim S. H. (서한 기술 연구소)
Lee H. Y. (동국대 기계공학과)
Publication Information
Transactions of Materials Processing / v.14, no.9, 2005 , pp. 772-778 More about this Journal
Abstract
This paper is concerned with the analysis of material flow characteristics of combined tube extrusion using pipe. The analysis in this paper concentrated on the evaluation of the design parameters for deformation patterns of tube forming, load characteristics, extruded length, and die pressure. The design factors such as punch nose radius, die corner radius, friction factor, and punch face angle are involved in the simulation. The combined tube extrusion is analyzed by using a commercial finite element code. This simulation makes use of pipe material and punch geometry on the basis of punch geometry recommended by International Cold Forging Group. Deformation patterns and its characteristics in combined forward and backward tube extrusion process were analyzed for forming loads with primary parameters, which are various punch nose radius relative to backward tube thickness. The results from the simulation show the flow modes of pipe workpiece and the die pressure at the contact surface between pipe workpiece and punch. The specific backward tube thickness and punch nose radius have an effect on extruded length in combined extrusion. The combined one step forward and backward extrusion is compared with the two step extrusion fer forming load and die pressure.
Keywords
Combined Tube Extrusion; Pipe; Finite Element Method; Punch Nose Radius; Die Comer Radius; Punch Face Angle;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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