Transactions of Materials and Heat Treatment

Title：Analysis on warm extrusion processing parameters of spur gear and numerical simulation of die wear

Authors： SHI Wei-bing~(1 2*) LIU Zi-li~2 SUN Zheng-mao~3 XU Xiang-long~1 (1.Jiangsu Sunway Precision Forging Co. Ltd. Dafeng 224100 China 2.Nanjing University of Aeronautics and Astronatics Nanjing 210016 China 3.Hefei University of Technology Hefei 230009 China

Unit：

KeyWords： spur gear processing parameter numerical simulation wear

ClassificationCode：TG376

year,vol(issue):pagenumber：2007,32(6):105-108

Abstract：

Rigid-viscoplastic finite element method was used to analyze the warm extrusion processing parameters of spur gear in thermal-mechanical coupled way.Some groups of numerical models were built with different design param- eters of die,geometric parameters of gear,friction conditions or processing conditions,and the service loads were in- vestigated.From the investigation,the conclusions are drawn as follows:reducing the half-cone-angle of female die, the load becomes smaller;reducing modulus of gear and number of teeth,the load falls down,and the influence of modulus on the load is remarkable.Reducing the friction coefficient,the load is less)with the initial temperature of workpiece and die being increased,the load falls down,and the influence of initial temperature of workpiece on the load is notable.While the extrusion speeding has no obvious influence on the load.Based on the Archard model,the wear condition of female die was simulated.The results show that wear is centralized on deformation zone and wear on the top end of gear shaped die is serious.

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Reference：

[1]Li G,Jin J T,Wu W T,et al.Recent development and appli- cations of three-dimensional element modeling in bulk forming processes[J].Journal of Materials Processing Technology, 2001,113:40-45.
[2]Oh S I,Wu W T,Arimoto K.Recent developments in process simulation for bulk forming processes[J].Journal of Materials Processing Technology,2001,111:2-9.
[3]刘建生，陈慧琴，郭晓霞，等．金属塑性加工有限元模拟技术与应用[M]．北京：冶金工业出版社，2003．
[4]张凯锋，魏艳红，魏尊杰．等．材料热加工过程的数值模拟[M]．哈尔滨：哈尔滨工业大学出版社，2001．
[5]刘全坤主编．材料成形基本原理[M]．北京：机械工业出版社，2004．
[6]崔向红．王树奇．姜启川，等．4Cr3M02NiV铸造热锻模具钢的高温磨损机理[J]．金属学报，2005，41(10)：1116- 1120．
[7]李振红，杨慧．黄英娜，等．精锻产品精度预测技术的研究现状[J]．锻压技术，2005，30(3)：1-3．
[8]Behrens B A,Schaefer F.Prediction of wear in hot forging tools by means of finite-element-analysis[J].Journal of Mate- rials Processing Technology,2005,(167):309-315.

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