원추형 금형 을 통한 박막식 정수압 압출 에 관한 연구Study on the Hydrofilm Extrusion through Conically Converging Dies

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The study is concerned with an analysis on the hydrofilm extrusion through conical dies. The upper bound method is adopted for the analysis of metal deformation in connection with hydrodynamic lubrication theory for the lubricant in order to determine the extrusion pressure for some variables such as reduction of area, die cone angle. In the upper bound method, a kinematically admissible velocity field is found by assuming proper streamlines and applying the flow function concept to the region of plastic deformation. The effect of work hardening is incorporated approximately by calculating the strains at the exit of the die. The experiments are carried out with the commercially pure aluminium for some chosen variables at room temperature. It is shown that the theoretical predictions are in good agreement with the experimental observations.
Publisher
대한기계학회
Issue Date
1983-01
Language
Korean
Citation

대한기계학회논문집 A, v.7, no.2, pp.168 - 174

ISSN
1226-4873
URI
http://hdl.handle.net/10203/66408
Appears in Collection
ME-Journal Papers(저널논문)
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