锻压技术

汽车转向节小飞边精锻技术的研发及应用

英文标题：Development and application on small flash precision forging technology for

作者：张运军陈天赋杨杰夏巨谌邓磊金俊松

分类号：TG316

出版年,卷(期):页码：2018,43(8):1-7

摘要：

以一种复杂程度达S4的转向节为研究对象，提出将传统的水平开式预锻和开式大飞边终锻改变为半闭式小飞边预锻成形和半闭式小飞边终锻成形的精锻工艺新方案。在采用经典塑性成形理论对小飞边的作用及其机理进行分析的基础上，采用热力耦合有限元进行了模拟分析，得到了等效应力、等效应变和温度分布场以及力形成曲线和变形规律，验证了工艺方案的正确性，并优化了预锻成形工艺。在程控锤和数控电动螺旋压力机上成功试制出转向节精密锻件，工艺试验结果与模拟结果吻合。新工艺方案的材料利用率为88％，较传统工艺方案提高了16%，且质量更好。

For a type of steering knuckle with complexity degree S4, the new method of precision forging process was proposed by changing the traditional horizontal open pre-forging and the open big flash final forging into a semi-closed small flash pre-forging and a semi-closed small flash final forging. Based on the analysis of action and mechanism of small flash by classical plastic forming theory, the simulation analysis was carried out by the thermodynamics coupled finite element method, and the equivalent stress, equivalent strain and temperature distribution fields as well as the force forming curve and deformation law were obtained. Then, the correctness of the process scheme was verified, and the pre-forging process was optimized. Furthermore, the steering knuckle precision forgings were successfully manufactured by the program control hammer and CNC electric screw press, and the process test result was the same as the simulation result. The material utilization ratio of the new process scheme is 88%, which is 16% higher than that of the traditional process,and the forgings by the new process have better quality.

基金项目：

湖北省技术创新专项重大项目（2017AAA009）

张运军（1966-），男，学士，高级工程师 E-mail：hbshdz@263.com

参考文献：

［1］齐鹏远，徐悦波，刘伟杰. 某重卡锻造转向节裂纹的分析研究
［J］. 锻压技术，2016，41（4）：1-4.

Qi P Y, Xu Y B, Liu W J. Analysis research on rupture of forging steering knuckle for a heavy truck
［J］. Forging & Stamping Technology, 2016, 41(4): 1-4.

［2］赵德颖，张连东，朱恩领，等. 枝杈类锻件挤压过程折叠缺陷形成研究
［J］.塑性工程学报，2017,24（2）：10-16.

Zhao D Y，Zhang L D，Zhu E L,et al. Folding defect formation of branch-like forgings during extrusion
［J］.Journal of Plasticity Engineering，2017,24（2）：10-16.

［3］吕炎. 锻模设计手册
［M］. 北京：机械工业出版社，2006.

Lyu Y. Forging Die Design Handbook
［M］. Beijing: China Machine Press, 2006.

［4］夏巨谌，李志刚. 中国模具工程大典第5卷锻造模具设计
［M］. 北京：电子工业出版社，2007.

Xia J C, Li Z G. China Die Engineering Handbook, Chapter 5: Forging Die Design
［M］. Beijing: Publishing House of Electronics Industry, 2007.

［5］何文涛，刘淑梅，赵毅，等. 基于正交试验的转向节锻模阻力墙结构参数优化
［J］. 锻压技术，2015，40（12）：16-20.

He W T, Liu S M, Zhao Y, et al. Structural parameter optimization of resistance wall of steering knuckle forging die based on orthogonal test
［J］. Forging & Stamping Technology, 2015, 40（12）：16-20.

［6］夏巨谌. 材料成形工艺
［M］. 2版.北京：机械工业出版社，2015.

Xia J C. Materials Processing Technology
［M］. 2nd Edition. Beijing: China Machine Press, 2015.

［7］何文涛，刘淑梅，刘雅辉. 38MnSiVS5非调质钢转向节的热锻成形数值模拟
［J］. 锻压技术，2015，40（3）：7-10.

He W T, Liu S M, Liu Y H. Numerical simulation of hot forging for steering knuckle of non-quenched and tempered steel 38MnSiVS5
［J］. Forging & Stamping Technology, 2015, 40(3): 7-10.

［8］蒋鹏，韦韡，付殿禹，等. 重卡转向节多工步卧式锻造成形过程的数值模拟
［J］. 锻压技术，2010，35（2）：22-25.

Jiang P, Wei W, Fu D Y, et al. Simulation of horizontal multistep die forging for heavy truck steering knuckle
［J］. Forging & Stamping Technology, 2010, 35(2): 22-25.

［9］ GB/T 12362—2016，钢质模锻件公差及机械加工余量
［S］.

GB/T 12362—2016，Steel die forgings-Tolerance and machining allowance
［S］.

［10］ DIN EN 10243-1—2005，Steel die forging-Tolerances on dimensions Part 1：Drop and vertical press forings
［S］.

服务与反馈：

【文章下载】【加入收藏】