Transactions of Materials and Heat Treatment

Title：Influence of dressing design on metal filling in crankshaft drop forging

Authors： Liu Yahui Liu Shumei He Wentao Yu Qiuhua

Unit： Shanghai University of Engineering Science

KeyWords： crankshaft drop forging counterweight metal die-filling dressing

ClassificationCode：

year,vol(issue):pagenumber：2015,40(4):1-5

Abstract：

Take the drop forging process of a three-cylinder crankshaft for example, the influence of dressing design on the metal flow in crankshaft drop forging was studied. Different designs of dressing and counterweights were proposed and used for numerical simulation, the filling effects of crankshaft counterweights were obtained, and the metal flow velocity, forming load and die stress at dressing were analyzed. The finite element analysis shows that the filling effect of crankshaft counterweights can be effectively improved by setting dressings without the substantial increasing of the forming load and die stress. Dressings should be positioned close to the connecting rod journal while far away from the flash bridge to reduce the outflow of metal. However, its volume should be balanced according to the filling effect of counterweights.

Funds：

国家自然科学基金资助项目（51301105）；上海市内涵科研建设工程(nhky-2013-05)

刘雅辉( 1988-),男,硕士研究生

Reference：

[1]Oh S I, Wu W T, Arimoto K. International symposium on advanced forming and die manufacturing technology [J]. Journal of Materials Processing Technology, 2001, 111(1-3):2-9.

[2]Behrens B A, Doege E, Reinsch S, et al. Precision forging processes for high-duty automotive components [J]. Journal of Materials Processing Technology, 2007, 185(1-3): 139-146.

[3]Bach F W, Kerber Kai. Prozesskette Przisionsschmieden [M]. Springer-Verlag Berlin Heidelberg, 2014.

[4]孙前江,王高潮,黄映霞,等. 曲轴锻造过程的数值模拟[J]. 锻压技术,2006,31(2):4-6.

Sun Q J, Wang G C, Huang Y X, et al. Numerical simulation of crankshaft in hot forging procedure [J]. Forging & Stamping Technology, 2006, 31(2): 4-6.

[5]王傲冰,冯亚玲,于锁清,等.平面分模四拐曲轴终锻模具设计及其数值模拟[J].热加工工艺,2011,40(5):197-199.

Wang A B, Feng Y L, Yu S Q, et al. Design of finish forging die for four-cylinder-sleeve crankshaft with plane split surface and numerical simulation on finish process [J]. Hot Working Technology, 2011, 40(5): 197-199.

[6]周杰,刘敏,王平,等. 汽车曲轴终锻模阻力墙新型结构参数试验[J].机械工程学报,2007,43(8):229-234.

Zhou J, Liu M, Wang P, et al. Experiment on parameters of new finish forging die structure of automobile crankshaft called resistance wall [J]. Chinese Journal of Mechanical Engineering, 2007, 43(8): 229-234.

[7]叶阳,陈元芳,叶伟,等.连皮形状和尺寸对曲轴模锻成形的影响[J].热加工工艺,2012,41(11):95-97.

Ye Y, Chen Y F, Ye W, et al. Impact of wad shape and size on crankshaft forging forming [J]. Hot Working Technology, 2012, 41(19): 95-97.

[8]叶阳.非调质钢曲轴模锻成形工艺研究[D].重庆理工大学,2012.

Ye Y. Research on the Die Forging Technology of Crankshaft with Non-quenching Steel [D]. Chongqing:Chongqing University of Technology, 2012.

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