Transactions of Materials and Heat Treatment

Title：Cold extrusion forming process of GH4169 alloy parts

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ClassificationCode：TG376.3

year,vol(issue):pagenumber：2019,44(4):101-105

Abstract：

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.

Funds：

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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