ECAP模具的凸模选材及热处理工艺优化  

Materials Selection and Process Optimization of Heat Treatment for ECAP Punch

作　　者：李永志[1] 于福义[1] 谢玉敏[1] 

机构地区：[1]江西九江学院机械与材料工程学院,江西九江332005

出　　处：《热加工工艺》2015年第1期169-171,共3页Hot Working Technology

基　　金：江西省十二五重点学科"材料加工工程"项目(jxjy2011-12);九江学院科研课题项目(07kj25);校级质量工程"教学团队"项目(jjzl2011-21)

摘　　要：对等径角挤压（ECAP）凸模的失效形式进行了分析。在经济、实用前提下,对ECAP凸模的3种材料进行了优选、对热处理工艺进行了优化。结果表明：H13钢凸模的最优淬火温度范围为1020～1050℃,并经过二次回火,适合ECAP温挤压成形;而Cr12Mo V钢凸模经过一次硬化热处理工艺,能完成常规金属材料的多道次ECAP冷挤压成形;YG15硬质合金用于凸模,经适当地热处理后,是＂全能型＂的ECAP凸模用材料。The failure forms of equal channel angular pressing （ECAP） punch were analyzed. In economic and practical premise, three kinds of materials for the ECAP punch were selected and its heat treatment process was optimized. The results show that the optimum quenching temperature range of H13 steel punch is 1020-1050℃, which passes double tempering. It fits the warm extrusion forming of ECAP; Crl2MoV steel punch after a hardening heat treatment process can complete the multi-pass ECAP cold extrusion of conventional metallic materials; YG15 carbide alloy as punch after appropriate heat treatment is the ＂almighty type＂ material for ECAP punch.

关 键 词：等径角挤压(ECAP) 凸模 选材 工艺优化 

分 类 号：TG376[金属学及工艺—金属压力加工] TG142[一般工业技术—材料科学与工程]