不锈钢三通管脉动液压成形工艺参数优化  

Process parameter optimization of pulsating hydroforming for stainless steel T-shaped tube

作　　者：陈明[1] 刘永进 徐勇[2] 夏亮亮 王云 张士宏[2] CHEN Ming;LIU Yong-jin;XU Yong;XIA Liang-liang;WANG Yun;ZHANG Shi-hong(School of Mechanical Engineering and Automation,Liaoning University of Science and Technology,Anshan 114051,China;Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Science,Shenyang 110016,China;College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,China)

机构地区：[1]辽宁科技大学机械工程与自动化学院,辽宁鞍山114051 [2]中国科学院金属研究所师昌绪先进材料创新中心,辽宁沈阳110016 [3]华北理工大学冶金与能源学院,河北唐山063210

出　　处：《塑性工程学报》2022年第10期153-162,共10页Journal of Plasticity Engineering

基　　金：中国科学院青年创新促进会专项(2019195);沈阳市重大科技成果转化专项(20-203-5-30)。

摘　　要：为获得不锈钢三通管脉动液压成形的最佳工艺参数,首先通过有限元方法研究了脉动加载条件下振幅和频率对零件成形性的影响规律。然后,结合响应面法,采用Box-Behnken方案进行了设计,建立了响应模型并研究了成形过程。以振幅、频率和轴向进给量为设计变量,目标件的最大减薄量和成形后总高度为响应量。结果表明,在一定范围内,大脉动加载振幅和小频率有助于改善三通管的成形性。响应面优化结果表明,在振幅为5 MPa、频率为0.8 Hz和轴向进给量为70 mm的组合下,可使零件成形总高度达到97.6 mm,最大减薄率控制在20%以内。试验获得零件的实际成形总高度为95 mm,最大减薄率为19.76%,试验结果与数值模拟吻合良好,且无明显缺陷,验证了响应面模型的准确性,并获得了最佳成形工艺参数。To obtain the optimal process parameters of pulsating hydroforming of stainless steel T-shaped tube,the influence laws of amplitude and frequency on the formability of parts under the pulsating loading condition was studied by finite element method.Then,combined with the response surface method,the Box-Behnken scheme was used to design and establish the response models,and the forming process was studied.The amplitude,frequency and axial feed were taken as the design variables,and the maximum thinning amount and total height of the target parts after forming were taken as the response quantities.The results show that large amplitude and small frequency of pulsating loading are helpful to improve the formability of T-shaped tube in a certain range.The response surface optimization results show that under the combination of amplitude of 5 MPa,frequency of 0.8 Hz and axial feed of 70 mm,the total forming height of parts can reach 97.6 mm,and the maximum thinning rate can be controlled within 20%.The actual forming total height of parts obtained by test is 95 mm,and the maximum thinning rate is 19.37%.The test results are in good agreement with numerical simulation,and there are no obvious defects,which verifies the accuracy of the response surface model,and the optimal forming process parameters are obtained.

关 键 词：三通管 有限元模拟 脉动液压成形 响应面法优化 

分 类 号：TG386.1[金属学及工艺—金属压力加工]