PREDICTION OF SURFACE DEFECTS IN DISK FORGING PROCESS FOR FGH95 ALLOY USING RING-LIKE BILLET BY COMPUTER SIMULATION

来源期刊：中国有色金属学报(英文版)1998年第4期

论文作者：Li Yuanchun Cui Jian Yan Minggao

文章页码：567 - 569

Key words：rigid visco-plastic FEM,　ring-like billet　,surface defects

Abstract: The forging processes of P/M FGH95 alloy disk using ring-like billet were simulated by large deformation rigid visco-plastic finite element method (FEM). Some surface defects like laps and underfill were predicted. The relative contacting length between billet and die (the ratio of the contacting length to the initial height of billet) was proposed as a criterion to judge whether the lap defects would occur or not.