H62黄铜微齿轮热挤压模具的设计  

Die Design of Brass H62 Micro-gear Hot Extrusion

作　　者：刘香茹[1] 刘春阳 魏伟[3] 周旭东[3] 

机构地区：[1]河南科技大学物理与工程学院,河南洛阳471003 [2]一拖建筑机械有限公司,河南洛阳471009 [3]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《河南科技大学学报（自然科学版）》2011年第6期4-6,共3页Journal of Henan University of Science And Technology:Natural Science

基　　金：河南省自然科学基金项目(0511050900)

摘　　要：采用拼接法设计了模数m=0.125 mm、压力角α=20°、齿数z=6、齿顶圆直径d=1 mm的H62黄铜微齿轮热挤压模具。优化了关键模具结构,用碳化钨硬质合金做挤压针、4Cr5MoS iV1做其他模具材料,采用尺寸为3 mm×3 mm的H62黄铜坯料,在G leeb le-1500D热模拟实验机上实现了650℃正向热挤压,挤出了成形状况良好的微齿轮。The hot extrusion die design of brass H62 micro-gear,which has modulus m=0.125 mm,pressure angle α=20°,number of teeth z=6,and tip diameter d=1 mm,was carried out with splicing method.By splicing of the initial designed dies,the optimal key dies structure was finished.The extrusion pins were made of tungsten carbide,and other dies materials were made of hot mold material 4Cr5MoSiV1.With the size 3 mm× 3 mm of brass H62 billets at 650 ℃ isothermal conditions,the micro-gear forward hot extrusion was carried out by using the Gleeble-1500D thermal simulation machine.The extrusion micro-gear has very good shape and performance.

关 键 词：热挤压 模具设计 微齿轮 H62黄铜 

分 类 号：TG372[金属学及工艺—金属压力加工]