Cast-rolling force model of multi-roll solid–liquid cast-rolling bonding process for fabricating metal cladding materials  

作　　者：Ce JI Huagui HUANG 

机构地区：[1]College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China [2]Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment of Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China [3]National Key Laboratory of Metal Forming Technology and Heavy Equipment,Taiyuan University of Technology,Taiyuan 030024,China [4]College of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China [5]National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,Qinhuangdao 066004,China

出　　处：《Chinese Journal of Aeronautics》2023年第9期346-368,共23页中国航空学报（英文版）

基　　金：This study was co-supported by the National Key Research and Development Program,China(No.2018YFA0707300);the National Natural Science Foundation of China(Nos.51974278 and 52205406);China Post Doctoral Science Foundation(No.2023M732572);the Key Science and Technology Project of Shanxi Province,China(No.20191102009);the Fundamental Research Program of Shanxi Province,China(No.202203021212289).

摘　　要：Based on twin-roll casting technology and multi-roll groove rolling technology,a Multi-Roll Solid-Liquid Cast-Rolling Bonding(MRSLCRB)process was proposed to fabricate Cu/steel cladding bars,which processes the advantages of short flow and high-efficiency.However,it is a typical 3-D thermal-fluid-mechanics coupled problem,and determining cast-rolling force is difficult during the equipment design.Therefore,the geometrical evolution of the cast-rolling area was studied,laying the foundation to establish contact boundary equations and analyze mechanical schematics and metal flow.Then,a 3-D steady-state thermal-fluid coupled simulation model,including casting roll,substrate bar,and cladding metal,was established.The Kissing Point(KP)height,average outlet temperature,and process window were predicted,and simulation results of the three-roll layout indicate that the KP distribution along the circumferential direction can be considered uniform.Hence,the engineering cast-rolling force model was derived based on the differential element method and plane deformation hypothesis.The accuracy was verified by the 3-D finite element model,and the influences of process layouts and technological parameters on the castrolling force were analyzed.Through the indirect multi-field coupled analysis method,the temperature–pressure evolution and reasonable process window can be predicted,which provides a significant basis for guiding equipment design and improving product quality.

关 键 词：Cast-rolling force Kissing point Multi-field coupled Numerical simulation Solid-liquid cast-rolling bonding 

分 类 号：TG335.9[金属学及工艺—金属压力加工]