Transactions of Materials and Heat Treatment

Title：Forging of the forging workpiece with deep hole and middle flange

Authors： Jing Yifeng

Unit： Wuxi Donghai Forging Co. Ltd.

KeyWords： forging workpiece with deep hole and middle flange floating die holder extrusion spring screw press

ClassificationCode：TG316

year,vol(issue):pagenumber：2017,42(1):1-4

Abstract：

The forging workpiece with deep hole and middle flange is difficult to produce because of its deep hole, thin lateral wall and with flange in middle. A kind of floating die holder was designed to drive the upper floating die holder by springs, and the forging workpiece with deep hole and middle flange was produced by two-step forming on the screw press. Then, the forming process was designed, such as the first step was local forming by preforging and the second step was hot extrusion deep hole forming by finish forging with float die holder. Therefore, the influence of spring design on forging process was analyzed, and a reasonable compression value of the spring was chosen. Furthermore, a practical forging workpiece was produced by the optimized process and devices, and their qualities were inspected. The results show that the overall dimensions and sizes after rough machining of products meet all requirements of the engineering drawing, the flow-lines are continuous and proper, the grain size is up to around seven grade, and the mechanical properties meet the requirements of user.

Funds：

国外客户委托开发项目（20150110）

景屹峰（1960-），男，学士，工程师 E-mail：13606195347@163.com

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