钣金零件液压成形中,新淬火状态成形工艺是目前国外普遍采用的方法。这比国内目前使用的M状态成形要先进,其生产效率大约可提高一倍左右。但是板材的新淬火状态是一种不稳定的状态,在室温下板材会很快硬化,以至无法成形。因此必须采取特殊措施才能使这一状态得以保持。目前都是用低温冷藏的方法来达到这个目的的。对国产板材,一二二厂和我厂从不同冷藏温度的试验中,找到了LY12、LC4、LY16三 Sheet metal parts hydroforming, the new quenching state forming process is currently widely used method abroad. This is more advanced than the currently used M state in China, and its production efficiency can be increased by about one time. However, the new quenched state of the sheet is an unstable condition where the sheet will rapidly solidify at room temperature and can not be formed. Therefore, special measures must be taken to keep this state alive. Currently, this method is used to achieve this goal. On the domestic plate, one two two plants and our plant from different refrigeration temperature test, found LY12, LC4, LY16 three