锻压技术

基于Deform-3D的曲轴热锻工艺参数优化

英文标题：Optimization of hot forging process parameter for crankshaft based on Deform-3D

作者：于秋华刘淑梅刘雅辉何文涛

单位：上海工程技术大学

分类号：TG316

出版年,卷(期):页码：2015,40(3):131-135

摘要：

利用UG软件建立轿车发动机曲轴的实体模型，对其进行相应的预锻、终锻模具设计。利用Deform-3D软件进行曲轴成形过程的散热、预锻、终锻数值模拟，通过调节模具下压速度，获得不同的模拟结果；分析不同下压速度下的曲轴应力、应变场分布情况；利用Origin软件对不同下压速度的应力、应变值进行数据处理，观察其变化规律，发现当下压速度为100 mm·s-1 时应力和应变较小；对06d02曲轴几个主要部位进行金相试验，并比较其微观组织差异发现，平衡块顶端的组织出现了黑色空洞，因此模具设计时要对平衡块进行优化。

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.

基金项目：

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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