冷冲模具在电火花切割加工中的破坏形式分析  

Analysis of Break Form in the Process of Wire Electric Discharge Machining for Die

作　　者：李应明[1] 胡泽豪 

机构地区：[1]湘潭大学机械工程学院,湖南湘潭411105 [2]变流力学与材料工程研究所,湖南长沙410004

出　　处：《中南林业科技大学学报》2007年第2期115-117,共3页Journal of Central South University of Forestry & Technology

基　　金：湖南省教育厅资助项目(05C087)

摘　　要：通过对模具在线切割加工中的破坏形式进行分析,结果表明:模具不完全淬火、坯料温度的不均匀分布、材料内部的碳化物偏析是模具变形与开裂的主要原因.在生产实践中,通过合理选择模具材料、正确的锻造工艺、合适的热处理工艺以及淬火前型孔粗加工等措施,可有郊防止模具的变形与开裂.The results of an analysis based on the fracture mode of mould in wire-cutting processing show that the partial-quenched of mould, the non-uniformity of blank temperature and the carbide segregation inside the material are the main reasons of deformation and cracking. Many measures such as reasonable selecting mould material, correct forging process, appropriate heat treatment, and rough machining of type hole before quenching are taken in production to effectively prevent deformation and cracking of mould.

关 键 词：材料加工 模具 线切割 开裂 不完全淬火 偏析 

分 类 号：TG385.2[金属学及工艺—金属压力加工] TG484