Processing limit maps for the stable deformation of dieless drawing  

作　　者：Yong He Xue-feng Liu Jian-xin Xie Hong-gang Zhang 

机构地区：[1]Key Laboratory for Advanced Materials Processing （MOE）, University of Science and Technology Beijing, Beijing 100083, China [2]State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2011年第3期330-337,共8页矿物冶金与材料学报（英文版）

基　　金：supported by the National Basic Research Priorities Program of China (No.2006CB605200);the National Natural Science Foundation of China (No.50634010, 50674008);the Program for New Century Excellent Talents in Chinese Universities (No.NCET-06-0083);the Universities Fundamental Research Foundation of MOE (No FRF-TP-10-002B)

摘　　要：Tin bronze wires were produced by dieless drawing. The effects of heating power, the distance between cooler and heater as well as feeding speed on the diameter, the temperature field, and the deformation region profile of the wires were investigated. The results indi-cated that each processing parameter exhibited both lower and upper limits of stable deformation based on the criterion of stable deformation with the diameter fluctuation of ±0.05 mm. Both the temperature and its gradient of the deformation region increased with increasing heating power under stable deformation, but decreased with an increase in feeding speed. As the distance between cooler and heater increased, the temperature of the deformation region increased and the slope of the deformation region profile decreased. The processing limit map of sta-ble deformation exhibited a closed curve and the unstable deformation consisted of wire breakage and diameter fluctuations.

关 键 词：tin bronze WIRE dieless drawing processing parameters turning method 

分 类 号：TQ340.651[化学工程—化纤工业] TG356.5[金属学及工艺—金属压力加工]