Transactions of Materials and Heat Treatment

Title：Optimization of hot forging process parameter for crankshaft based on Deform-3D

Authors： Yu Qiuhua Liu Shumei Liu Yahui He Wentao

Unit： Shanghai University of Engineering Science

KeyWords： crankshaft Deform-3D numerical simulation movement speed metallurgical structure

ClassificationCode：TG316

year,vol(issue):pagenumber：2015,40(3):131-135

Abstract：

A solid model of car engine crankshaft was established by UG software and the corresponding pre-forging die and final-forging die were designed. The thermal dissipation, pre-forging and final forging in the crankshaft forming process were numerically simulated by Deform-3D software. The different results were obtained by adjusting the movement speeds of the upper die. By analyzing the stress and strain distribution of the engine crankshaft, processing the related dates using Origin software and recording their changing regularity, it is obtained that the values of the stress and strain are relatively small when the movement speed of the upper die is 100 mm·s-1. Additionally, the microstructure experiment in several main positions of 06d02 crankshaft was carried out and the differences of the microstructure in various parts were observed. It shows that some black holes are visible in the microstructure on the top of the balance block, and hence the balance block should be optimized when designing the die.

Funds：

上海市内涵科研建设项目（nhky-2013-05）；上海工程技术大学研究生科研创新资助项目（13KY0516）

于秋华(1989-)，女，硕士研究生

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