Transactions of Materials and Heat Treatment

Title：Optimization of process parameters on conedrum ball head in cold upsetting

Authors： Chen Jian Zhang Dongmin Zhou Weimin Yan Zijie Tang Guanfu

Unit： Shanghai Institute of Technology Shanghai Dong Feng Automobile Special Parts Co. Ltd.

KeyWords： cone drum cold upsetting ball head orthogonal experiment numerical simulation

ClassificationCode：TH162+1

year,vol(issue):pagenumber：2017,42(10):5-8

Abstract：

For the limitations of upsetting destabilizing in cold forging process of ball pin type parts, based on plastic deformation theory of metal, the load state of ball head was analyzed in cold upsetting, and the forming technology of cold upsetting for conedrum ball head was proposed based on the results of the mechanical analysis. Then, through the finite element numerical simulation analysis of Deform3D, the influences of the cone angle, fillet radius of die entrance, friction factor and punching speed on the forming quality of ball head were studied by the fourfactor and threelevel orthogonal test, and the optimum combination of technique parameters was obtained with cone angle of 15°，fillet radius of die entrance of R4 mm，friction factor of 0.1 and punching speed of 2 mm·s-1 to make the forming load of die minimum. The result shows that under the influence of multiple factors，the friction coefficient has the greatest influence on the forming load，following by the punching speed and the cone angle，and the fillet radius of die entrance is the least.

Funds：

企业横向项目（J2016-215）

作者简介：陈剑（1986-），男，硕士研究生,E-mail：chenjian1044@163.com;通讯作者：张东民（1968-），男，博士，教授,E-mail:dmzhang_nuaa@sit.edu.cn

Reference：

[1]冯文杰,梁强,陈莹莹,等. 大高径比凸台缩径-冷镦成形工艺方案研究[J]. 热加工工艺, 2013, 42(1):17-19.

Feng W J, Liang Q, Chen Y Y, et al. Research on necking and cold upsetting process for large ratio of height to diameter boss[J].Hot Working Technology, 2013, 42(1): 17-19.[2]余世浩,李霞,刘容. 大规格异型球头销冷挤压成形模拟[J]. 武汉理工大学学报,2010, 32(21):102-105.

Yu S H, Li X, Liu R. Simulation research on large size of special shaded ball pin formed by cold extrusion[J].Journal of Wuhan University of Technology, 2010, 32 (21):102-105.

[3]陆璐,王辅忠,王照旭. 有限元方法在金属塑性成形中的应用[J]. 材料导报, 2008, 22(6):87-91.

Lu L, Wang F Z, Wang Z X. Application of finite element method in metal plastic forming[J]. Materials Review, 2008, 22(6):87-91.

[4]傅蔡安,华新锋,王贤. 基于Deform的轴承钢球冷镦工艺的优化设计[J]. 锻压技术, 2010, 35(1):154-158.

Fu C A, Hua X F, Wang X. Optimization design of cold upsetting process in steel bearings ball based on Deform[J]. Forging & Stamping Technology, 2010, 35(1):154-158.

[5]张艳芳,周敏. 大高径比凸台冷镦成形极限研究[J]. 热加工工艺,2014, 43(23):160-162, 165.

Zhang Y F, Zhou M. Research on cold upsetting forming limit of large height-diameter ratio boss[J].Hot Working Technology, 2014, 43(23):160-162, 165.

[6]陈贵仁,王雷刚,张太良,等. 取力器传动轴冷挤压成形工艺研究[J]. 锻压技术,2015,40(2):98-102.

Chen G R, Wang L G, Zhang T L, et al. Study on cold extrusion process of power take-off transmission shaft [J]. Forging & Stamping Technology, 2015, 40(2):98-102.

[7]刘助柏,王连冬,李纬民,等. 镦粗力学分析[J]. 大型铸锻件,1992,(1):5-9.

Liu Z B, Wang L D, Li W M, et al. Mechanical analysis of upset[J]. Heavy Castings and Forgings,1992, (1):5-9.

[8]孙宪萍,刘强强,杨兵,等. 基于磨损正交试验的温挤压模具优化设计[J]. 润滑与密封,2016, 41(6):73-76, 92.

Sun X P, Liu Q Q, Yang B, et al. Optimization design on warm extrusion die based on orthogonal experiments of wear[J]. Lubrication and Sealing, 2016, 41(6):73-76, 92.

[9]张剑寒,方刚. 基于有限元模拟和正交实验方法的轴承钢球冷镦工艺及模具优化[J]. 塑性工程学报,2009, 16(3):211-217.

Zhang J H, Fang G. Optimization for cold heading process and die design of bearing steel ball by finite element simulation and orthogonal test method[J].Journal of Plasticity Engineering,2009, 16(3):211-217.

[10]魏科,王高潮,李宁,等. 基于DEFORM和正交试验法的前轴辊锻工艺优化[J]. 塑性工程学报,2012, 19(1):6-10.

Wei K, Wang G C, Li N, et al. Research on optimization of frontaxle roll forging technique based on DEFORM and orthogonal experimental method[J]. Journal of Plasticity Engineering, 2012, 19(1):6-10.

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