Zr基块体非晶合金微型内齿轮的反挤压成形工艺及模具  

Backward extrusion process and die design for the micro-internal gear of Zr-based bulk metallic glasses

作　　者：马智慧[1] 叶福田 张小平 梅琼风[1] 

机构地区：[1]上海交通大学塑性成形工程系,上海200030 [2]东莞市横沥模具科技产业发展有限公司,广东东莞523460 [3]东莞市机械模具产业协会,广东东莞523460

出　　处：《模具技术》2016年第2期1-3,18,共4页Die and Mould Technology

摘　　要：通过对Zr55Al10Ni5Cu30块体非晶合金的热分析和恒温变应变速率热压缩试验,确定了块体非晶合金过冷液相区内变形的最佳工艺参数。根据成形过程的有限元模拟,设计了合理的模具结构,使得挤压件端面平整,可保证微型内齿轮所需的形状精度,减少后续加工。With thermal analysis and micro compression experiments of Zr55Al10Ni5Cu30 bulk metallic glass,the optimal forming condition of the metallic glass in the supercooled liquid state was determined.The feasible backward extrusion die was designed based on the finite element analysis of the backward extrusion process.The flatness and smoothness of the extruded internal gear,as well as its dimensional accuracy could be guaranteed by this die structure.

关 键 词：非晶合金 微型内齿轮 反挤压模具 有限元分析 

分 类 号：TG386[金属学及工艺—金属压力加工]