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The Effect of Chamber Bottom Shape on Die Elastic Deformation and Process in Condenser Tube Extrusion  

Lee, Jung-Min (부산대학교 정밀기계과 대학원)
Kim, Byung-Min (부산대학교 기계공학부)
Jung, Young-Deuk (부경대학교 기계공학부)
Cho, Hoon (한국생산기술연구원)
Cho, Hyung-Ho (한국생산기술연구원)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.5, 2003 , pp. 66-72 More about this Journal
Abstract
In case of hollow cylinder extrusion using porthole die, the effects of extrusion parameters-temperature, the speed of extrusion, the shape of the die and mandrel-on metal flow in porthole die extrusion of aluminum have been investigated. However, there have been few studies about condenser tube extruded by porthole die. Original metal flow of condenser tube by porthole die extrusion is similar to hollow cylinder extrusion but the estimation of metal flow for extrusion parameters is different. For example, variation of chamber length in hollow extrusion only affects the welding pressure, however, the welding chamber length in condenser tube extrusion influences to the welding pressure as well as the deflection of mandrel. This study was designed to evaluate metal flow, welding pressure, extrusion load, tendency of mandrel deflection according to angular variation in the bottom of chamber in porthole die. Estimation was carried out using finite element method in as non-steady state. Analytical results can provide useful information the optimal design of porthole die.
Keywords
Condenser Tube; Non-steady state analysis; Porthole die extrusion; Stress analysis; Welding Chamber length;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
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