关键词: 粘性介质压力成形, 镍基高温合金, 波纹形薄壁板件, 铝合金, 阶梯形板件, 不锈钢, 球形阀芯板壳件

Abstract: Viscous Pressure Forming (VPF) is a new sheet metal forming technology for difficult-to-form materials.In this paper, the applications of VPF to the forming of the nickel-based superalloy corrugated thin-walled sheetpart, the aluminum alloy ladder sheet part, and the stainless steel sphere spool sheet shell are discussed. The research results show that : (1) VPF is suitable for forming the sheet parts with super thin-walled (wall-thickness 013mm) small radius ( r ≤2 mm) surface and high strength material, avoids local necking and fracturing, and obtainsparts of high dimensional accuracy ( IT10211); (2) Compared with multi-stage rigid punch forming, aluminum alloyladder sheet part can be formed in one stage with VPF; (3) High dimensional accuracy and good surface finenesssphere spool sheet shell part for sealing can be also manufactured with VPF.

Key words: Viscous Pressure Forming (VPF), nickel based superalloy, corrugated thin walled part, aluminum alloy, ladder sheet part, stainless steel, sphere spool sheet shell part