目前,国际上对超塑性成形已应用于挤压成形(立体成形)(图1)、气压成形(薄板成形)(图2)、无模拉丝(图3)、压注加工(图4)、引伸加工,以及用超塑性材料来制作失腊模或热塑性塑料模具。此法制造模具简便,加工周期短,特别适用于试制及中小批生产。我国目前对ZnAl_(22)超塑性 At present, the international superplastic forming has been used in extrusion (three-dimensional forming) (Figure 1), air pressure forming (sheet forming) (Figure 2), dieless drawing Extensions, as well as the use of superplastic materials to make lost wax molds or thermoplastic molds. This method to create a simple mold, short processing cycle, especially for trial and small batch production. Our country is currently superplastic to ZnAl_ (22)