新型耐热钢G115大口径无缝管挤压模拟  

Simulation of extrusion for large-diameter seamless tube of new heat-resistant steel G115

作　　者：车洪艳 孙嘉汐 孙东志 马迎松 魏佳雨 李永清 何西扣[1] Che Hongyan;Sun Jiaxi;Sun Dongzhi;Ma Yingsong;Wei Jiayu;Li Yongqing;He Xikou(Central Iron&Steel Research Institute Co.,Ltd.,China Iron&Steel Research Institute Group Co.,Ltd.,Beijing 100081,China;sunCAE Consulting,Gundelfingen 79098,Germany;School of Mechanical and Automotive Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;Inner Mongolia Northern Heavy Industries Group Corp.Ltd.,Baotou 014030,China)

机构地区：[1]中国钢研科技集团钢铁研究总院有限公司,北京100081 [2]德国sunCAE咨询公司,德国弗莱堡79098 [3]广西科技大学机械与汽车工程学院,广西壮族自治区柳州545006 [4]内蒙古北方重工业集团有限公司,内蒙古自治区包头014030

出　　处：《锻压技术》2025年第3期120-127,共8页Forging & Stamping Technology

基　　金：国家重点研发计划(2024YFF0618901)。

摘　　要：为提高G115马氏体耐热钢产品质量、优化工艺流程、节约研发时间和成本,采用通用有限元软件ABAQUS对G115钢大口径无缝管挤压过程进行模拟,使用任意拉格朗日欧拉(Arbitrary Lagrangian-Eulerian)公式的数值模型解决了模拟超大塑性变形的难点,同时建立了准确的摩擦模型和考虑各种影响因素的材料模型,通过对比仿真与试验结果,验证了模型的准确性,并研究了初始挤压温度和挤压速度、摩擦因数、最大剪应力对挤压的影响。结果表明:随着初始挤压温度的提高,所需挤压力下降;挤压速度越大,所需挤压力越大;摩擦因数、最大剪应力与挤压力均为正相关关系。In order to improve the product quality,optimize the process flow and save the research and development time and cost of G115 martensitic heat-resistant steel,the extrusion process of large-diameter seamless tube of G115 steel was simulated by finite element software ABAQUS,and the difficulty of simulating super-large plastic deformation was solved by using the Arbitrary Lagrangian-Eulerian(ALE)formulation.Then,an accurate friction model and a material model considering various influencing factors were established,and the accuracy of the model was verified by comparing the simulation and experimental results.Furthermore,the influences of initial extrusion temperature,extrusion speed,friction factor and maximum shear stress on the extrusion were studied.The results show that with the increasing of initial extrusion temperature,the required extrusion force decreases,while the influence of the extrusion speed is opposite.The greater the extrusion speed,the greater the required extrusion force.The friction factor and the maximum shear stress are both positively correlated with the extrusion force.

关 键 词：G115马氏体耐热钢 热挤压 ABAQUS 大口径无缝管 热力耦合 

分 类 号：TG335.6[金属学及工艺—金属压力加工]