线切割加工中模具的变形与开裂机理研究  

Analysis for deformation and cracking of mould in the process of wire-cutting

作　　者：李应明[1] 

机构地区：[1]湘潭大学机械工程学院,湘潭411105

出　　处：《现代制造工程》2006年第10期65-67,共3页Modern Manufacturing Engineering

基　　金：湖南省教育厅资助项目(05C087)

摘　　要：通过分析在线切割加工中模具的破坏形式表明: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形孔预加工等措施,可有效防止模具的变形与开裂。Analysis which was based on the fracture mode of mould in wire-cutting processing, and the results 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 means such as reasonable selecting mould material, correct forging process, appropriate heat treatment, rough machining of type hole before quenching and so on are taken in production to prevent deformation and cracking of mould effectively.

关 键 词：模具 线切割 开裂 变形 

分 类 号：TG76[金属学及工艺—刀具与模具]