锻压技术

铁道车辆钩舌闭式模锻工艺的数值模拟研究

英文标题：Numerical simulation on closed die forging process for railway vehicle knuckle

作者：陈庆敏孟凡响李丽赵轩

单位：吉林大学

分类号：TG316.3

出版年,卷(期):页码：2019,44(7):1-6

摘要：

以铁道车辆钩舌为研究对象，制定了经自由锻制坯、一次预成形过渡的闭式模锻工艺。以刚粘塑性有限元法为基础，建立了钩舌闭式模锻的有限元模型，通过钩舌终锻过程的数值模拟，对钩舌闭式模锻过程中所产生的充不满、折叠等缺陷进行分析。以铁道车辆钩舌终锻成形过程中的各部分金属流动情况及各成形缺陷的位置、成因等为依据，对钩舌闭式模锻工艺进行优化调整。基于优化调整后的锻造工艺进行试验验证，并对终锻件进行成形误差分析。结果表明，终锻件的成形缺陷得到了有效控制，成形质量良好。对钩舌锻造工艺的改进结果理想，实现了铁道车辆钩舌闭式模锻工艺的无缺陷成形，可应用于实际生产。

For the railway vehicle knuckle, the closed die forging process including free forging and pre-forming was developed. Based on the rigid-viscoplastic finite element method, the finite element model of closed die forging for knuckle was established, and the insufficient filling and folding defects in the final forging process were analyzed by numerical simulation. Then, based on the metal flow and the location and cause of forming defects in various parts of railway vehicle knuckle during the final forging process, the closed die forging process of knuckle was optimized and adjusted. Furthermore, the experiments were conducted based on the optimized forging process, and the forming error of final forgings was analyzed. The results show that the forming defects of final forgings are effectively controlled, and the forming quality is good. Thus, the improvement of the forging process for railway vehicle knuckle is ideal, and the closed die forging process of railway vehicle knuckle without defects is realized, which can be applied to the practical production.

基金项目：

国家自然科学基金资助项目(51575231)

陈庆敏（1965-），男，学士，高级工程师，E-mail：chenqm@jlu.edu.cn ；通讯作者：孟凡响（1995-），男，硕士研究生，E-mail：15844800002@163.com

参考文献：

[1]申恩强, 樊自田, 龙威,等. 车钩钩舌的铸造工艺模拟与优化[J]. 铸造, 2011, 60(8):765-768.

Shen E Q, Fan Z T, Long W, et al. Simulation and optimization of casting process for coupler knuckle [J]. Foundry, 2011, 60(8):765-768.

[2]杜云慧, 张励忠, 邢书明,等. 钩舌常见裂纹形式与产生机理研究[J]. 铁道机车车辆, 2003, 23(3):21-23.

Du Y H, Zhang L Z, Xing S M, et al. Study on formation and mechanism of cracks in hook-head [J]. Railway Locomotive & Car, 2003, 23(3):21-23.

[3]刘会龙, 于普明, 徐堃,等. 提高货车用铸造钩舌疲劳寿命的研究[J]. 铸造, 2017, 66(7):754-756.

Liu H L, Yu P M, Xu K, et al. Study on improving the fatigue life of casting knuckles of wagons [J]. Foundry, 2017, 66(7):754-756.

[4]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-type forgings during extrusion[J].Journal of Plasticity Engineering，2017, 24（2）：10-16.

[5]陈玉清, 李林杰, 王广欣,等. 新型锻造钩舌复杂曲面误差分析与调整方法[J]. 大连交通大学学报, 2013, 34(2):83-86.

Chen Y Q, Li L J, Wang G X, et al. Error analysis and method of adjusting complex curved suface of new forged coupler knuckle[J]. Journal of Dalian Jiaotong University, 2013, 34(2):83-86.

[6]任小鸿,陈丽.机车叉架类零件的锻造工艺研究与模具设计[J].铸造技术, 2016, 37(5):1010-1012.

Ren X H, Chen L. Forging process research and die design for motorcycle fork parts [J]. Foundry Technology, 2016, 37(5): 1010-1012.

[7]管艳华,田武岭,张建武,等.大秦线重载钩舌疲劳寿命有限元模拟分析[J].机械设计与研究,2012,28(3):122-123.

Guan Y H, Tian W L, Zhang J W, et al. FEA coupler knuckle fatigue life of heavy-haul freight in da-qin railway[J]. Machine Design & Research, 2012,28(3):122-123.

[8]王忠雷. 三维金属体积成形过程有限元模拟若干关键技术研究与系统开发[D]. 济南：山东大学, 2011.

Wang Z L. Research on Several Key Technologies and System Development of 3D Bulk Metal Forming Finite Element Simulation [D]. Jinan: Shandong University,2011.

[9]罗善明, 方媛. 弧齿锥齿轮精锻成形工艺的数值模拟[J].中国机械工程,2009,20(4):485-487.

Luo S M, Fang Y. Numerical simulation on precision forging of spiral bevel gears [J]. China Mechanical Engineering, 2009, 20(4):485-487.

[10]姚波, 方刚. 汽车发动机连杆预锻过程模拟及预锻毛坯优化[J].热加工工艺,2009,38(13):106-109,114.

Yao B, Fang G. Numerical simulation of pre-forging for connecting rod of automobile engine and optimization of its pre-forging billet [J]. Hot Working Technology, 2009, 38(13): 106-109,114.

[11]徐家颖，鞠花，陶春国，等. 关于17型车钩断裂的分析[J]. 铸造，2012，61(11)：1358-1360.

Xu J Y, Ju H, Tao C G, et al. Analysis on the fracture of 17-type coupler[J]. Foundry, 2012, 61(11):1358-1360.

[12]俞树吉，荆留生，吴剑敏，等. 铁道客车密接式车钩铸造工艺的改进与生产实践[J]. 中国铸造装备与技术，2014，(6): 10-12.

Yu S J, Jing L S, Wu J M, et al. Improvement on casting process and production practices in railway passenger train with tight lock couplers[J]. China Foundry Machinery & Technology, 2014，(6): 10-12.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】