美国航天和航空局刘易斯研究中心和巴悌尔纪念研究所的研究者们认为,静液挤压能够提高断面收缩率,减少随后的拉伸道次。研究结果表明,在不采用最终退火时,静液挤压总是比冷加工好,从而得出了一个合理的结论,即静液挤压起到了冷加工加上热处理的作用。实际上,静液挤压和随后的拉伸、热处理得出了几乎等于完全拉伸和热处理线材的临界电流密度值;而且采用 Researchers at the Lewis Research Center at NASA and the Barnall Memorial Institute believe that hydrostatic extrusion can increase the cross-sectional shrinkage and reduce the number of subsequent stretch passes. The results show that hydrostatic extrusion is always better than cold working without final annealing, which leads to the reasonable conclusion that hydrostatic extrusion has the effect of cold working plus heat treatment. In fact, hydrostatic extrusion and subsequent drawing and heat treatment result in a value almost equal to the critical current density for fully drawn and heat treated wire;