夹层钢板冲压的成形机理与缺陷分析

Analysis of the forming mechanism and defect during sandwich sheet metal stamping

介绍了夹层钢板的材料结构、夹层钢板的冲压成形性及在成形过程中容易产生的缺陷,总结了影响夹层钢板成形性能的因素。介绍了夹层钢板在汽车行业中的应用情况及国内外的研究现状,并指出了当前车用夹层钢板研究的热点难点,对夹层钢板在此行业中应用发展做了展望。

The steel sandwich sheet normally consists of three layers bonded together by various means （e. g. felting, rolling or pressure welding）. The steel sandwich sheet is provided with excellent mechanical properties, such as high strength-to-weight and stiffness-to-weight ratios, low relational density, excellent thermal and acoustical insulation et al. Now steel sandwich sheet has been applied broadly in airplane, architecture, wiring et al. Recently the sheet has been applied gradually in automotive parts. The material structure, the forming properties and forming defects of steel sandwich sheet are classified in detail. The research and development survey of the factors infecting the formability is conducted. The application in automotive sheet metal part and the survey research of sandwich sheet is introduced. The hot and difficult research topics are pointed out. Finally, the prospect of the sandwich sheet applied in automotive industry is made.