Transactions of Materials and Heat Treatment

Title：Research situation and development tendency of forming technology for

Authors： Yang Cheng Zhao Shengdun Zhang Jianjun

Unit： Xi'an Jiaotong University

KeyWords： automotive alternator poles hot forging extrusion

ClassificationCode：

year,vol(issue):pagenumber：2014,39(10):1-8

Abstract：

The plastic deformation technologies of automotive alternator poles at home and abroad were introduced including sheet metal stamping process, cold extrusion, hot forging-cold sizing, warm-cold compound forming, back extrusion based on divided flow, hot forging-forward extrusion, hot trimming-piercing forming, as well as the short casting-forging compound forming, high speed warm extrusion, one single hot forging process. The processes used in current production have some deficiencies, such as excessive working procedures, long cycle time, huge amount of equipments and workers. However, the short forming processes of alternator poles such as casting-forging compound forming, high speed warm extrusion and one-step hot forging process, have problems of heavy forging load and short die life. Researching on methods with high efficiency, small consumption and high quality forming of alternator poles is the future development trend.

Funds：

国家科技重大专项：高档数控机床与基础制造装备（2011ZX04016-081-03）；高等学校博士学科点专项科研基金资助项目（20100201110002）；陕西省自然科学基金资助项目（2012JM7019）

杨程（1976-），男，博士，副教授

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