锻压技术

SCM435合金钢接头的冷镦工艺研究与数值模拟

英文标题：Research and numerical simulation on cold heading process of SCM435 alloy steel joint

作者：陈永强陈玉杨群

分类号：TG376.3

出版年,卷(期):页码：2022,47(11):28-35

摘要：

某规格的SCM435合金钢接头采用“热镦+铣槽”的生产方式，工序复杂、生产效率低、产品质量不稳定，针对该问题，提出了产品质量更稳定、适合批量化加工的多工位冷镦成形工艺。基于单向拉伸试验，通过Deform-3D有限元软件建立了SCM435合金钢材料的本构关系和临界损伤模型，并对合金钢接头各工位的连续冷镦成形过程进行了动态模拟，从金属流动规律、成形饱满度、成形载荷变化以及损伤值分析等角度来预判潜在的缺陷，从而验证工艺的可行性。研究结果表明：针对该合金钢接头制定的6工位冷镦工艺方案切实可行，各工位零件成形良好，无折叠、开裂缺陷，金属流动合理，成形载荷分布均匀，最大损伤值均小于材料的损伤阈值。最后通过多工位冷镦机进行了试生产，获得了符合要求的合金钢接头。

A SCM435 alloy steel joint adopts the production mode of “hot upsetting + slot milling”, which has complicated process, low production efficiency and unstable product quality. In view of this problem, a multi-station cold heading process with more stable product quality and suitable for batch processing was proposed to replace it. Based on the uniaxial tensile test, the constitutive relationship and critical damage model of SCM435 alloy steel were established by finite element software Deform-3D, and the continuous cold heading process of each station for alloy steel joint was dynamically simulated. Then, the potential defects were predicted from the perspectives of metal flow law, forming plumpness, forming load change and damage value analysis, and the feasibility of the process was verified. The results show that the six-station cold heading process scheme for the alloy steel joint is feasible, the parts in each station are well formed without folding and cracking defects, the metal flow is reasonable, the forming load distribution is uniform, and the maximum damage value is less than the damage threshold of the material. Finally, the trial production is conducted by the multi-station cold heading machine, and the alloy steel joint that meets the requirements is obtained.

基金项目：

安徽省级质量工程项目（2019xfzx03）

作者简介：陈永强（1982-），男，硕士，副教授，E-mail：chenyq198206@163.com；通信作者：杨群（1982-），男，硕士，讲师，E-mail：yangqun@whit.edu.cn

参考文献：

[1]周恩明.42CrMo钢制螺栓断裂失效分析[J].金属热处理,2019,44(11):241-244.

Zhou E M.Fracture failure analysis of 42CrMo steel bolt[J].Heat Treatment of Metals,2019,44(11):241-244.

[2]Sun M C, Tzou G Y, Zheng L A . Processing animation simulation and FEM analysis of multi-stage cold forging of stainless automotive battery fastener[J]. Indian Journal of Engineering and Materials Sciences, 2013, 20(3):219-224.

[3]杨万博,霍元明,何涛,等.TC16钛合金航空紧固件冷镦成形实验研究[J].塑性工程学报,2020,27(10):7-12.

Yang W B,Huo Y M,He T,et al.Experimental study on cold heading forming of TC16 titanium alloy aerospace fastener[J].Journal of Plasticity Engineering,2020,27(10):7-12.

[4]Dikshit S, Gurjar V, Dasgupta R, et al. Studies on cold upsetting behaviour of AA2014-based metal matrix composites, FEM simulation, and comparison with experimental results[J]. Journal of Materials Science, 2010, 45(15):4174-4179.

[5]孙恒.基于响应面法的球销终镦工艺优化[J].煤矿机械,2020,41(5):105-108.

Sun H.Optimization of final upsetting process of ball pin based on response surface method[J].Coal Mine Machinery,2020,41(5):105-108.

[6]丛兵兵,孔明,张弘斌,等.马车螺栓冷镦成形有限元模拟及模具设计[J].塑性工程学报,2022,29(2):76-81.

Cong B B,Kong M,Zhang H B,et al.Finite element simulation and die design of cold heading forming for carriage bolt[J].Journal of Plasticity Engineering,2022,29(2):76-81.

[7]姚文俊,陈松.汽车法兰轴结构件塑性成形工艺分析及改进[J].锻压技术,2020,45(11):7-12.

Yao W J,Chen S.Analysis and improvement on plastic forming process for structure part of automobile flange shaft[J].Forging & Stamping Technology,2020,45(11):7-12.

[8]莫德赟.汽车悬架球头拉杆冷成形技术[J].锻压技术,2020,45(2):55-60.

Mo D Y.Cold forming technology of ball head tie rod for automobile suspension[J].Forging & Stamping Technology,2020,45(2):55-60.

[9]胡建军,李小平.Deform-3D塑性成形CAE应用教程[M].北京:北京大学出版社,2011.

Hu J J,Li X P.Deform-3D Plastic Forming CAE Application Tutorial[M].Beijing:Peking University Press,2011.

[10]金城旭,闫萌萌,任靖日,等.轮毂螺栓断裂有限元分析[J].塑性工程学报,2016,23(5):192-196.

Jin C X,Yan M M,Ren J R,et al.FE analysis of fracture for hub bolt[J].Journal of Plasticity Engineering,2016,23(5):192-196.

[11]刘德政,李炎,王羽,等.韧性断裂阀值在冲压工艺分析中的应用研究[J].制造业自动化,2019,41(8):24-28.

Liu D Z,Li Y,Wang Y,et al.Research on critical value of ductile fracture for stamping process[J]. Manufacturing Automation,2019,41(8):24-28.

[12]刘光辉,刘华,王涛,等.六角抽孔螺栓多工位冷镦成形工艺[J].锻压技术,2020,45(2):49-55.

Liu G H,Liu H,Wang T,et al.Multi-station cold upsetting process for six-angle hole bolt[J].Forging & Stamping Technology,2020,45(2):49-55.

服务与反馈：

【文章下载】【加入收藏】