45/316L复合管三辊斜轧组元金属变形规律研究  

Study on Component Metal Deformation Law of 45/316L Cladding Tubes in Three-roll Skew Rolling Bonding Process

作　　者：季策 吴晋 李子轩 王涛 黄庆学[1,2,3] JI Ce;WU Jin;LI Zixuan;WANG Tao;HUANG Qingxue(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024;Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment of Ministry of Education,Taiyuan University of Technology,Taiyuan 030024;National Key Laboratory of Metal Forming Technology and Heavy Equipment,Taiyuan University of Technology,Taiyuan 030024;Hai'an&Taiyuan University of Technology Advanced Manufacturing and Intelligent Equipment Industrial Research Institute,Hai'an 226601)

机构地区：[1]太原理工大学机械与运载工程学院,太原030024 [2]太原理工大学先进金属复合材料成形技术与装备教育部工程研究中心,太原030024 [3]太原理工大学金属成形技术与重型装备全国重点实验室,太原030024 [4]海安太原理工大学先进制造与智能装备产业研究院,海安226601

出　　处：《机械工程学报》2024年第20期77-87,共11页Journal of Mechanical Engineering

基　　金：国家自然科学基金(52205406,52205403,U22A20188);国家重点研发计划(2018YFA-0707300);中央引导地方科技发展资金(YDZX20191400002149);山西省基础研究计划青年科学研究(202303021223003,202203021212289,20210302124115);山西省“1331”工程重点创新团队建设计划;海安太原理工大学先进制造与智能装备产业研究院开放研究基金(2023HA-TYUTKFYF013)资助项目。

摘　　要：针对具有组元熔点高、变形抗力大、界面复合难等特征的高强耐蚀无缝金属复合管高效连续成形难题,提出了无缝金属复合管三辊斜轧复合工艺。基于ABAQUS软件建立了45/316L复合管三辊斜轧复合过程数值仿真模型,研究了不同减径量和初始组元金属壁厚占比时的减径率、减壁率、伸长率和组元金属壁厚占比等参数变化规律,最后通过试验成功制备了45/316L复合管,验证了仿真分析准确性。研究结果表明:在端部焊接、轧辊和芯棒多重约束作用下45碳钢管和316L不锈钢管实现被迫同步变形,组元金属壁厚占比基本不变,为实现目标尺寸规格精准控制奠定理论基础;拉剪试验表明拉剪断裂发生于45碳钢基体侧,侧弯试验后复合界面无开裂,复合界面实现高强冶金结合。因此,三辊斜轧复合工艺为实现高强耐蚀无缝金属复合管的组元厚比精确可控、界面高强冶金结合、高效连续近终成形提供了新思路。The three-roll skew rolling bonding process is proposed to solve the efficient continuous forming problems of seamless metal cladding tubes with high strength and corrosion resistance,which possess characteristics of high component melting point,large deformation resistance,and difficult interfacial bonding.Based on the ABAQUS software,a numerical simulation model is established for the three-roll skew rolling bonding process of 45/316L cladding tubes.The variation laws of the diameter reduction rate,wall reduction rate,elongation rate,component metal wall thickness ratio,etc.are studied under different diameter reduction rates and initial component metal wall thickness ratios.Finally,45/316L cladding tubes were successfully prepared through the experiment,verifying the accuracy of the simulation analysis.The results show that 45 carbon steel and 316L stainless steel are forced to synchronously deform under multiple constraints of end welding,roll,and mandrel.The component metal wall thickness ratios are unchanged,laying a theoretical foundation for the accurate control of target size specifications.Tensile shear tests show that tensile shear fractures occur on the matrix of 45 carbon steel,and the bonding interface does not crack after the lateral bending test,proving that interfaces achieve high-strength metallurgical bonding.Therefore,the three-roll skew rolling bonding process provides a new method for realizing the precise control of component metal wall thickness,interfacial high-strength metallurgical bonding,and efficient continuous near-net forming of seamless metal cladding tubes with high strength and corrosion resistance.

关 键 词：复合管 斜轧 变形规律 层厚比 冶金结合 

分 类 号：TG335[金属学及工艺—金属压力加工]