板材液压成形技术与装备新进展

New Development on Technology and Equipment of Sheet Hydroforming

随着板材零件向大尺寸、薄壁、深腔、复杂曲面以及难变形材料方向发展,具有低成本、高柔性的板材液压成形技术在航空、航天、汽车等制造业受到高度重视,并面临新的机遇和挑战。介绍板材液压成形技术的发展现状,重点介绍近年发展的径向主动加压充液拉深、预胀充液拉深、正反向加压充液拉深、双板成对液压成形和热态液压成形技术。分析国内外板材液压成形技术在汽车、航空航天等领域的应用现状,综述板材液压成形装备的研制进展,介绍正在研制的世界最大的吨位为150 MN、液体容积为5 m3的液压成形装备,对板材液压成形技术的发展趋势进行展望。

With the development of sheet metal parts on large size, thin-wall, deep cavity, complicated curved-surface and hard forming materials, the manufacturing industries, such as aviation, aerospace and automobile industry, have pald more attentions to the low-cost and high flexible sheet hydroforming technology, which is up agalnst new opportunities and challenges. The state-of-the-art of sheet hydroforming technology is introduced, and the new developing technologies, including hydromechanical deep drawing with independent radial hydraulic pressure, pre-bulging hydromechanical deep drawing, hydromechanical deep drawing with double-side hydraulic pressures, double sheets hydroforming and warn sheet hydroforming, are presented in detall. The current application statements of domestic and foreign on the domalns of automobile, aerospace and others are summarized, the progress of R＆D on sheet hydroforming equipments are reviewed, and the words’ largest sheet hydroforming equipment with tonnage of 150 MN and liquid volume of 5 m3 is introduced, the development tendency of sheet hydroforming technology is prospected.