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김병민(B.M. Kim),조해용(H.Y. Cho),김태형(T.H. Kim) Korean Society for Precision Engineering 1996 한국정밀공학회지 Vol.13 No.1
In forming processes, die failure must be considered before die design. One of the main reasons of die failure in industrial application of metal forming technologies is wear. The die wear affects the tolerances of formed parts, metal flow and costs of processes etc. The only way to control these failures is to develop methods which allow prediction of the die wear and which are suited to be used in the design state in order to optimize the process. In this paper, wire drawing processes were simulated using the rigid-plastic finite element method and its results were used for predicting the die wear by Archard's wear model. The effects of the temperature rising on the wear profiles of die were also investigated. The simulation results were compared with the measured die profiles.
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자동차 에어백 Housing Lower의 냉간 박육장출성형
박민철(M. C. Park),강재영(J. Y. Kang),김동환(D. H. Kim),김영환(Y. H. Kim),안치규(C. K. An),김병민(B. M. Kim) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.10
Recently, the automotive airbag is applied small cars, as well as luxury cars. Housing lower part automotive air bag important components, and is manufactured through cold forging of the second stage. Concentricity and thickness control of housing lower part is important. Concentricity and thickness is not uniform, if there is a problem when the explosion. Therefore, in this study, the finite element analysis through the problems to solve. Concentricity resolved from the companies, but the thickness was not resolved. As a fundamental study, uniform in thickness in order to the selected design parameters that affect the process when finite element analysis was performed. Through finite element analysis could be obtained the product to the desired thickness.
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