Transactions of Materials and Heat Treatment

Title：Optimization of cap billet in the precision forming based on numerical simulation

Authors： Chen Kai Liu Shumei Wang Xingxing He Wentao

Unit： Shanghai University of Engineering Science

KeyWords： cap precision forging numerical simulation forming load billet optimization

ClassificationCode：TG316

year,vol(issue):pagenumber：2015,40(8):149-152

Abstract：

The influences of billet design parameters and cap die on the forming load, folding and underfill of forging parts were analyzed by numerical simulation. The simulation results show that two initial billets are designed unreasonably, and the main reason causing inadequate filling is the small volume of billets. In order to avoid inadequate filling and keep extrusion pressure and clamping force as low as possible, the volume ratio of excess material and forgings should be controlled within the range from 0.04% to 0.35%, and the width of excess material groove is within 3-6 mm, which increases with the increase of volume. The transition fillet r=2 mm should be added between the excess material and forgings.

Funds：

上海市高等教育内涵建设“085”工程（B-8932-13-0110）；上海工程技术大学研究生科研创新项目(14KY0514，15KY0507)；上海工程技术大学大学生重点科研平台创新训练项目(A1-5300-14-050115)

陈凯（1992-），男，硕士研究生

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