http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
포머의 냉간 후방압출 공정을 위한 금형 소재의 충격 특성 평가
노남수(N. S. Rho),박은기(E. K. Park),박효영(H. Y. Park),최정묵(J. M. Choi) 한국소성가공학회 2014 한국소성가공학회 학술대회 논문집 Vol.2014 No.10
This study is for the backward extrusion process of cold forging. In the backward extrusion process, the material flows in the opposite direction to the upper punch. The work piece is formed either in the cavity formed between the punch and die, or in the cavity of the punch. Backward extrusion is used to produce circular inside and outside diameters, squares with rounded corners, multiple outside diameters and multiple inside diameters. In this process, unique loads applied on the tool. This loads are reduce tool life cycle. We evaluate load applied to the tool using the FEM simulation, and impact property of materials for cold-forging die.