锻压技术

GH4169合金零件的冷挤压成形工艺

英文标题：Cold extrusion forming process of GH4169 alloy parts

作者：张翔王高潮甘雯晴孙一方

分类号：TG376.3

出版年,卷(期):页码：2019,44(4):101-105

摘要：

提出了一种GH4169合金零件冷挤压成形的工艺路线，以达到提高零件力学性能、降低生产周期和成本的目的。通过试验，总结出一套专门用于GH4169合金零件冷挤压成形的坯料表面处理方案，经过此方案处理后，坯料对润滑剂的吸附能力得到明显提升，降低了坯料与模具间的摩擦力，起到了很好的保护润滑作用。采用分步优化的方法，设计并优化了冷挤压模具结构，大幅度提高了模具寿命。最终，通过冷挤压试验，成功挤压出性能优良的GH4169合金零件，其变形程度最高可达62%，抗拉强度可提高至1773 MPa，较冷挤压前提高约1倍。证明了GH4169合金零件冷挤压成形工艺的可行性和优越性。

A cold extrusion process route of GH4169 alloy parts was proposed in order to improve the mechanical properties of parts and reduce production cycle and cost. Through experiments, a set of blank surface treatment schemes specially designed for the cold extrusion forming of GH4169 alloy parts was summarized. After this treatment, the adsorption capacity of blanks for the lubricant is significantly improved, and the friction between blank and die is reduced to provide the good protection lubrication. Then, the structure of cold extrusion die was designed and optimized by the step-by-step optimization method. And the die life is greatly improved. Finally, GH4169 alloy parts with excellent performance are successfully extruded by cold extrusion test, and the deformation degree is up to 62%. Furthermore, the tensile strength is increased to 1773 MPa, which is about one time higher than that before cold extrusion, and the feasibility and superiority of cold extrusion forming process of GH4169 alloy parts are proved.

基金项目：

江西省工业领域科技支撑重点项目(20141BBE50011）

张翔（1993-），男，硕士研究生 E-mail：1073663961@qq.com 通讯作者：王高潮（1956-），男，硕士，教授 E-mail：wanggaochao@nchu.edu.cn

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