Modelling of void crushing for large-ingot hot forging

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The present work is concerned with the elimination of internal voids in a large ingot so as to obtain defect-free products. The void-crushing process is analyzed by the thermo-viscoplastic finite-element method for three-dimensional forging at elevated temperature. The effects of the pre-cooling temperature, the rate of deformation and the change of the die-shape are discussed for obtaining the high crushing efficiency of a void, using the Taguchi method. The bonding efficiency is also estimated and the optimal combination of forging parameters for the elimination of Voids is determined using the Taguchi method, in which a new objective function has been used considering load constraint. (C) 1997 Elsevier Science S.A.
Publisher
ELSEVIER SCIENCE SA LAUSANNE
Issue Date
1997
Language
English
Article Type
Article; Proceedings Paper
Citation

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, v.67, no.1-3, pp.195 - 200

ISSN
0924-0136
URI
http://hdl.handle.net/10203/2622
Appears in Collection
ME-Journal Papers(저널논문)
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