• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2023, Vol. 59 ›› Issue (8): 74-82.doi: 10.3901/JME.2023.08.074

• 材料科学与工程 • 上一篇    下一篇

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预制波纹工艺对钢/铝/铝合金复合板界面影响机制研究

陈宇1, 刘文文1,2,3, 王涛1,2,3, 申宏卓1, 陈科1, 张斌1   

  1. 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. 太原理工大学中澳联合研究中心 太原 030024
  • 收稿日期:2022-01-25 修回日期:2022-10-11 出版日期:2023-04-20 发布日期:2023-06-16
  • 通讯作者: 王涛,男,1985年出生,博士,教授,博士研究生导师。主要研究方向为轧制工艺及设备、金属层状复合板轧制复合机理。E-mail:twang@tyut.edu.cn
  • 作者简介:陈宇,男,1995年出生。主要研究方向金属复合板轧制工艺。E-mail:chenyu_0073@163.com
  • 基金资助:
    国家自然科学基金(51905372,52005361); 国家重点研发计划(2018YFA0707300); 中央引导地方科技发展专项资金(YDZX20191400002149); 山西省科技重大专项(20181102016)资助项目

Study on Influence Mechanism of Prefabricating Corrugation Process on Interface of Steel/Aluminum/Aluminum Alloy Laminated Plate

CHEN Yu1, LIU Wen-wen1,2,3, WANG Tao1,2,3, SHEN Hong-zhuo1, CHEN Ke1, ZHANG Bin1   

  1. 1. College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024;
    2. Engineering Research Center of Advanced Metal Composite Forming Technology and Equipment, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024;
    3. TYUT-UOW Joint Research Center, Taiyuan University of Technology, Taiyuan 030024
  • Received:2022-01-25 Revised:2022-10-11 Online:2023-04-20 Published:2023-06-16

摘要: 针对轧制钢/铝复合板过程中易出现的变形不协调、界面氧化和结合强度低等问题,提出一种“冷轧预制波纹+热轧平辊整平”的轧制复合方法。首先,利用波纹辊冷轧预制出铝侧带波纹,钢侧为平面的钢/铝复合板,由于铝侧极薄,既可以避免双金属的变形不协调,又可以使铝覆着在钢上防止其高温氧化;其次,将钢/铝波纹复合板再与铝合金板组坯,加热至500℃,经平辊轧制,最终制备出表面平直、界面呈波纹形状的钢/铝/铝合金复合板。通过分析不同预制波纹工艺对钢/铝/铝合金复合板轧制过程中界面形貌及性能的影响表明:①铝带轧前热处理,可以提高铝带延展性和降低其变形抗力,有利于改善预制工艺中钢铝双金属的协调变形;②预制钢/铝复合板压下率存在最佳值,过小界面存在缝隙,过大铝层容易被波纹辊拉断;③通过优化预制工艺,最终制备的钢/铝/铝合金复合板实现了各层金属间的机械咬合和冶金结合,轧向界面平均剪切强度达到77.68 MPa、横向界面平均剪切强度达到92.63 MPa,远高于国标60 MPa,为提高钢/铝复合板界面结合强度提供了新的思路。

关键词: 波纹辊冷轧, 波纹界面, 冶金结合, 钢/铝/铝合金复合板, 剪切强度

Abstract: In order to solve the problems of uncoordinated deformation, interface oxidation and low bonding strength in the process of rolling steel/aluminum laminated plate, a method of prefabricating corrugation by cold rolling and flat roller leveling by hot rolling was proposed. Firstly, cold rolling the initial blank with corrugated roll mill, and the steel/aluminum laminated plate with corrugated aluminum side was prefabricated. It can not only avoid the deformation coordination of bimetallic, but also make aluminum cover with steel to prevent its high temperature oxidation because the aluminum is too thin. Then forming the steel/aluminum laminated plate slab with aluminum alloy plate, heat to 500 ℃ and rolling them on flat roll mill, and the straight steel/aluminum/aluminum alloy laminated plate with corrugated interface was successfully prepared. The effects of different prefabricating corrugation processes on the interface morphology and property of the steel/aluminum/aluminum alloy laminated plate during the rolling process were analyzed. The results show that:① Heating treatment of aluminum strip before rolling can improve its ductility and reduce its deformation resistance of aluminum strip, which is beneficial to improve the coordinated deformation of steel and aluminum bimetal in the prefabrication process.② There is an optimum reduction ratio in the process of prefabricating steel/aluminum laminated plate.If the reduction ratio is too small, it is not easy to combine, and if too large, the aluminum layer will break by corrugated roller.③By optimizing the prefabrication process, the final steel/aluminum/aluminum alloy laminated plate realizes the mechanical and metallurgical bonding between the layers and the average interface shear strength reaches the maximum of 77.68 MPa in the rolling direction and 92.63 MPa in the transverse direction, which is far higher than the national standards 60 MPa. The research results provide a new idea for improving the interface bonding strength of steel/aluminum laminated plate.

Key words: corrugated cold rolling, corrugated interface, metallurgical bonding, steel/aluminum/aluminum alloy laminated plate, shear strength

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