锻压技术

大型液压装载机摇臂锻造成形模拟

英文标题：Forging simulation on the rocker arm of large hydraulic loader

单位：河南科技大学河南省有色金属材料科学与加工技术重点实验室第一拖拉机股份有限公司

分类号：TG316

出版年,卷(期):页码：2017,42(2):1-4

摘要：

摇臂作为大型液压装载机关键受力构件，随着工作时间的延长和工作强度的增大，经常出现开裂现象，为了提高装载机的工作寿命与安全可靠性，基于锻件强度高的优点，将摇臂由原来的铸件改成锻件。在大型液压装载机摇臂铸改锻的基础上，根据大型液压装载机锻造摇臂的形状结构特点，制定了摇臂锻造成形工艺方案。并运用Deform-3D软件对摇臂成形过程进行模拟。研究了摇臂锻造模拟结果的应力、应变、温度场、行程-载荷曲线；并用锻锤对摇臂进行锻造生产试制。研究结果表明，生产试制结果与模拟结果基本吻合，模拟分析为成形工艺的完善与优化提供理论参考。

Rocker arm is regarded as the key mechanical components of a hydraulic loader, which often appears crack because of the long working time and high intensity. In order to prolong the working life, ensure safety and enhance reliability of the loader, the rocker arm was produced by forging instead of casting based on the advantages of high intensity of forging. The forging process was formulated according to the shape structure of the large hydraulic loader forging rocker arm. Then, the forging process was carried out by Deform-3D, and simulation results of the stress，strain, temperature field, and the stroke-load curve in the rocker arm forging process were researched. Furthermore, the rocker arm was produced by forging hammer. The results show that the results of production experiment and the simulation are matched with each other. Simulation analysis provides a theoretical reference for the improvement of the forming process and optimization.

基金项目：

国家重点研发计划(2016YFB0300404)；河南省科技厅科技攻关项目（132102210122）；河南省科技攻关计划(国际科技合作)项目(162102410025)

齐敏杰（1990-），女，硕士研究生宋克兴（1967-），男，博士，教授

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