增压级静子内环是大直径、内“U”型截面、钛合金板料高精度成形件。针对其结构特点、材料特性和精度要求,引入新的应力松弛热定型工艺,设计结构巧妙的应力松弛热定型胎具,微细调整工艺参数和热定型胎具尺寸,从而实现了静子内环这种特殊难成形结构钛合金零件的精密成形。 Supercharger stage static inner ring is a large diameter, inner “U ” type section, high-precision titanium alloy sheet forming parts. In view of its structural characteristics, material properties and accuracy requirements, a new stress relaxation and heat setting process is introduced to design an ingenious stress relaxation and heat setting die, finely adjust the process parameters and the heat setting die size so as to realize this kind of inner ring Precise forming of special refractory structure titanium alloy parts.