一、前言超塑性等温模锻是指把具有超塑组织的坯料放到加热至变形温度的模具里,在超塑条件下进行的模锻工艺。如果不考虑变形热效应,变形在等温条件下进行。这种工艺有如下优点: 1.显著提高变形金属的塑性,降低模锻力; 2.可一次成形大锻件,制品尺寸精确,机加工量少或不用机加工; 3.减少模具消耗,降低设备吨位,大大节约生产成本; I. Introduction Superplastic isothermal forging refers to the superplastic tissue into blanks heated to deformation temperature of the mold, under superplastic conditions forging process. If you do not consider the deformation heat effect, the deformation is carried out under isothermal conditions. This process has the following advantages: 1. Significantly improve the plastic deformation of metal, reducing the forging force; 2. Forging a large forgings, the product size is accurate, machining less or no machining; 3. Reduce the mold consumption and reduce equipment Tonnage, greatly saving production costs;