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

参考文献：

［1］周广东，李钦河.装载机反转六连杆的优化设计[J]. 建筑机械化，2012，33（8）：45-46.Zhou G D，Li Q H. Optimization design of loader's inversion six connecting rods[J]. Construction Mechanization，2012，33（8）：45-46.
［2］覃峰.煤矿装载机铸造摇臂的降重优化设计[J]. 煤矿机械，2013，34（2）：13-15.Qin F. Optimization design of coal mine loader foundry rocker arm [J]. Coal Mine Machinery，2013，34（2）：13-15.
［3］张军.轮式装载机摇臂断裂问题分析及预防[J]. 中小企业管理与科技，2009，（22）：281-281.Zhang J. Radial fracture problem analysis prevention of wheel loader rocker arm [J]. Management & Technology of SME，2009，（22）：281-281.
［4］陈钰金，徐春国，任广升，等.L形铝合金控制臂预锻数值模拟及工艺优化[A]. 第十二届全国塑性工程学术年会论文集[C]. 重庆，2011.Chen Y J，Xu C G，Ren G S，et al. Numerical simulation and process optimization for pre-forging of L-shaped aluminum alloy controlling arm[A]. 12th National Conference on Technology of Plasticity Academic Annual Meeting[C]. Chongqing，2011.
［5］Zhang Z J，Daia G Z，Wub S N，et al. Simulation of 42CrMo steel billet upsetting and its defects analyses during forming process based on the software DEFORM-3D[J]. Materials Science and Engineering A，2009，499：49-52.
［6］陈春. 超高强度起落架锻造成形工艺研究 [D]. 长沙: 中南大学，2012.Chen C. Research on Forging Process for Ultra-High-Strength Steel Aircraft Landing Gear [D].Changsha: Central South University，2012.
［7］权国政，冯福伟，艾百胜，等.半轴锥齿轮温精锻工艺的数值模拟和实验研究[J]. 热加工工艺，2008，27(23)：18-21.Quan G Z，Feng F W，Ai B S，et al. Simulation and experiment study on warm forming process for half axle bevel gear[J]. Hot Working Technology，2008，27（23）：18-21.
［8］孙曙宇.汽轮机叶片锻造成形有限元数值模拟研究[D]. 成都：西华大学，2008.Sun S Y. FEM Numerical Research on Forging Process of Turbine Blade[D]. Chengdu：Xihua University，2008.
［9］夏玉峰，张严东，纪帅.BR1500HS 高强钢与5CrMnMo模具钢的瞬态接触换热系数[J]. 中南大学学报，2015，46 （12）：4434-4441.Xia Y F，Zhang Y D，Ji S. Transint contact heat transfer coefficient between high-strength steel BR1500HS and die steel 5CrMnMo [J]. Journal of Central South University，2015，46（12）：4434-4441.
［10］Bakri Abdul Hay，Brahim Bourouga，Christine Dessain. Thermal contact resistance estimation at the blank/tool interface: Experimental approach to simulate the blank cooling during the hot stamping process[J]. International Journal of Material Forming，2010，(3)：147-163.

服务与反馈：

【文章下载】【加入收藏】