银石墨触头材料生产的挤压模改进  

IMPROVEMENT OF EXTRUSION DIES FOR PRODUCING SILVER-GRAPHITE CONTACT MATERIALS

作　　者：王硕 

机构地区：[1]上海合金材料总厂,上海200072

出　　处：《上海有色金属》1997年第4期166-169,共4页Shanghai Nonferrous Metals

摘　　要：本文分析了银石墨触头材料在大挤压比的纤维化挤压中，出现的挤压力过大引起闷车和挤压碎裂的问题。从力学的角度分析了挤压力大和碎裂的原因，采用不同的挤压模具消除了挤出材料的碎裂和压力过大的现象，并通过生产实践得到证实。This paper deals with the problems such as extrusion failure and cxtrusion breaksocurring during the extrusion of silver-graphite materials at high cxtrusion ratio (so called fibretype extrusion). Thc causes of these phenomena are analysed from the angle of mechanics. Itis proven that these phenomena have been eliminated by adopting improved extrusion dies.

关 键 词：触头材料 挤压 银石墨 假合金 挤压模具 

分 类 号：TM240.52[一般工业技术—材料科学与工程]