Transactions of Materials and Heat Treatment

Title：Enclosed die forging by upsetting extrusion

Authors： ZHANG Hai-ying LU Xian LIN Jian WU Zhen-qing WANG Yi-hua

Unit： Shanghai Baojie Automobile Components and Parts Co. Ltd. Shanghai Yunliang Enterprise Development Co. Ltd. Shanghai Huaxia Industry Co. Ltd. New Nanyang Science & Technology Co. Ltd.

KeyWords： automobile parts flashless die forging upset-extrusion forming

ClassificationCode：TG316

year,vol(issue):pagenumber：2012,37(1):17-20

Abstract：

Under the material saving demand of automotive forgings, closed die forging process is always used to replace the conventional open die forging, which will cause lots of process problems. In order to solve the major issues and improve the performance of forgings, the upsetting extrusion method in the separable closed die was discussed and the corresponding die structure with back pressure was designed, and some experimental works were carried out. In the end a motor vehicle automatic gearbox gear shaft was precision forged in the separable closed die, material consumption is reduced by 38.1% and good economic benefits were achieved.

Funds：

上海市引进技术的吸收与创新年度计划（产11方向29）

Reference：

［1］Бильчук М В. Разработка и исследование закрытой объёмной штамповки поковок сложной формы[J].КШПОМД，2010，(6)：9-13.
［2］王以华.上海锻压身产技术及设备的进步[J].锻压技术，2005，30(增刊)：7-10.
［3］Taylan Altan. Cold and Hot Forging Fundamentals and Applications[M].America：ASM，2005.
［4］王以华.锻模设计技术及实例[M].北京：机械工业出版社，2009.
［5］Третьюхин В В. Закрытая штмповка методом высадки с выдав-ливанием [J].КШПОМД，2010，(6)：43-45.
［6］郭坤龙，辛选荣, 刘汀，等.浮动凹模闭塞及压力的计算方法的研究[J].锻压技术，2010,35（1）：70-74.
［7］杨程，赵升吨，章建军.汽车发电机爪极闭式热锻一步成形工艺研究[J].锻压技术，2011，36（3）：14-19.
［8］日本塑性加工学会锻造分科会. ゎかりゃすぃ鍛造加工[M].东京:日刊工业新闻社，2005.
［9］ Третьюхин В В. Закрытая штмповкаПоковокметодом комбинированновго выдавливания[J].КШПОМД，2008，(8)：16-19.
［10］Wang Yihua,Hu Chengliang,Zhang Haiying,et al.Study on the casting-forging process for low plasticity aluminium alloy connecting rods[A].Engineering Plasticity and Its Applications[C]. Wuhan,2011.

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