锻压技术

基于Simufact的圆插针成形仿真及优化

英文标题：Simulation and optimization on round pin forming based on Simufact

作者：冯学林万里翔

关键词：圆插针冷锻压小平面正交试验 Simufact

分类号：TH128

出版年,卷(期):页码：2020,45(11):1-6

摘要：

基于Simufact.Forming冷锻成形模块，对圆插针截面圆的成形性进行了数值模拟。在截面面积不变的条件下研究了不同宽高比的毛坯成形的等效塑性应变分布图，得到了最优的毛坯宽高比，为圆插针冲压的毛坯设计提供了参考。分析了锻圆各工艺参数对圆插针成形的影响，设计了以锻圆头端间隙、预锻C角、冲压速度和摩擦系数为试验参数的4因素3水平正交试验，以成形后的小平面总宽度为优化目标，通过极差分析得到了4个因素对圆插针小平面总宽度的影响趋势。结合生产实际得出的优化方案为：锻圆头端间隙为0.09 mm、冲压速度为80冲次·min-1、减小预锻C角、适当降低润滑条件，为圆插针生产过程中的小平面宽度尺寸优化提供了参考。

Based on cold forging module of Simufact.Forming, the formability of cross-section circle for round pin was simulated. Under the condition of constant cross-sectional area, the diagrams of equivalent plastic strain distribution for blank forming with different ratios of width to height were studied, and the optimal ratio of width to height for blank was obtained to provide a reference for blank design of round pin stamping. Then, the influences of forging process parameters on the forming of round pin were analyzed, and a four-factor and three-level orthogonal experiment with forging round head end clearance, pre-forged C angle, stamping speed and friction coefficient as the experiment parameters was designed. Furthermore, taking the total width of small plane after forming as the optimization objective, the influence trend of four factors on the total width of small plane for round pin was obtained by range analysis. According to the actual production, the optimized scheme is as follows: the forging round head end clearance is 0.09 mm, the stamping speed is 80 strokes per minute, the pre-forged C angle is reduced, and the lubrication conditions are appropriately reduced to provide a reference for the optimization on the width of small plane for round pin in the production process.

基金项目：

冯学林（1990-），男，硕士，工程师 E-mail：837340232@qq.com;通讯作者：万里翔（1965-），男，博士，副教授 E-mail：wanlx@home.swjtu.edu.cn

参考文献：

[1]胥锴，张书权，顾伟，等.环保易切削黄铜的发展现状及前景[J].上海有色金属,2008, 29(2):88-90.

Xu K, Zhang S Q, Gu W, et al. Present status and prospects of environmental protection type free cutting brass [J].Shanghai Nonferrous Metals, 2008, 29(2):88-90.

[2]王梦寒，危康，李小娟，等.高强锰黄铜高温热流变行为及本构方程的建立[J].Journal of Central South University,2018, 25(7):1560-1572.

Wang M H, Wei K, Li X J, et al. Constitutive modeling for high temperature flow behavior of a highstrength manganese brass [J]. Journal of Central South University, 2018, 25(7): 1560-1572.

[3]王梦寒，夏知姿，李雁召，等.锰黄铜合金高温变形及本构模型研究[J].热加工工艺,2016, 45(4):46-48.

Wang M H, Xia Z Z, Li Y Z, et al. Research on high temperature deformation and constitutive model of Mn brass alloy [J].Hot Working Technology,2016, 45(4):46-48.

[4]王文浩. 黄铜齿环精密锻造成形及模具磨损研究[D].重庆：重庆大学,2013.

Wang W H. Study on Precision Forging Process and Die Wear of Brass Synchronizer Ring [D].Chongqing: Chongqing University, 2013.

[5]王延辉，龚冰，李冰.H65黄铜合金热变形流变应力特征研究[J].塑性工程学报, 2008,15(6):113-117.

Wang Y H, Gong B, Li B. Flow stress of H65 brass alloy during hot compression deformation [J]. Journal of Materials Plasticity Engineering, 2008, 15(6):113-117.

[6]乔景振，田保红，张毅，等.Cu-7Ni-7Al-2Fe-2Mn-0.5Ti合金高温热变形行为[J].材料热处理学报, 2018, 39(3):131-135.

Qiao J Z, Tian B H, Zhang Y, et al. Hot deformation behavior of Cu-7Ni-7Al-2Fe-2Mn-0.5Ti alloy[J].Transaction of Materials and Heat Treatment,2018, 39(3):131-135.

[7]李建云. 硅黄铜热变形特征及组织演变规律的研究[D].赣州：江西理工大学,2014.

Li J Y. Research on Thermal Deformation Characteristics and Microstructure Evolution of Silicon Brass Alloy [D].Ganzhou:Jiangxi University of Science and Technology, 2014.

[8]Liu N, Li Z, Li L, et al. Processing map and hot deformation mechanism of novel nickelfree white copper alloy [J]. Transactions of Nonferrous Metals Society of China, 2014, 24(11):3492-3499.

[9]Wang Y, Zhou Y X, Xia Y M. A constitutive description of tensile behavior for brass over a wide range of strain rates [J]. Materials Science & Engineering A, 2004, 372(1):186-190.

[10]Lin Y C, Chen X M, Liu G. A modified Johnson-Cook model for tensile behaviors of typical highstrength alloy steel [J]. Materials Science & Engineering A, 2010, 527(26):6980-6986.

[11]Lin Y C, Chen M S, Zhang J. Modeling of flow stress of 42CrMo steel under hot compression [J]. Materials Science & Engineering: A (Structural Materials: Properties, Microstructure and Processing), 2009, 499(1-2):88-92.

[12]Tao Z J, Fan X G, Yang H, et al. A modified Johnson-Cook model for NC warm bending of large diameter thinwalled Ti-6Al-4V tube in wide ranges of strain rates and temperatures [J]. Transactions of Nonferrous Metals Society of China, 2018, 28(2):298-308.

[13]Zhao Y H, Sun J, Li J F, et al. A comparative study on JohnsonCook and modified JohnsonCook constitutive material model to predict the dynamic behavior laser additive manufacturing FeCr alloy [J]. Journal of Alloys and Compounds, 2017, 723:179-187.

[14]Johnson G R, Cook W H. A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures [J]. Engineering Fracture Mechanics, 1983, 21:541-548.

[15]叶建华, 陈明和, 王宁, 等. 基于修正JC模型的TA12钛合金高温流变行为[J]. 中国有色金属学报, 2019, 29(4):75-83.

Ye J H, Chen M H, Wang N, et al. Flow behavior of TA12 titanium alloy based on modified JC model at high temperature [J]. The Chinese Journal of Nonferrous Metals, 2019, 29(4):75-83.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】