锻压技术

汽车发电机爪极成形工艺的研究现状及其发展趋势

英文标题：Research situation and development tendency of forming technology for

作者：杨程赵升吨章建军

单位：西安交通大学

关键词：汽车发电机爪极热锻挤压

分类号：

出版年,卷(期):页码：2014,39(10):1-8

摘要：

对国内外汽车发电机爪极的塑性成形工艺做了阐述，包括板料冷冲压工艺、冷挤压工艺、热锻冷精整工艺、温冷锻联合工艺、分流反挤压工艺、热锻正挤压工艺和红切边冲孔工艺，也包括短流程的铸锻复合工艺、高速温挤压工艺、闭式热锻一步成形工艺等。目前，生产中应用的爪极成形工艺都存在着工序多、生产周期长、需要增加设备台数和操作人员多等缺点，而一些短流程的成形工艺，如铸锻复合成形、高速温挤压成形以及一步热锻成形，则存在着锻造载荷过大、模具寿命低等问题。高效、低耗和高精生产出爪极零件是未来的发展趋势。

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.

基金项目：

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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