阴极基底是激光陀螺关键部件,属薄壁碗型金属件,目前主要采用棒料切削加工制备,不仅材料利用率低,而且棒料切削加工把金属内部的纤维组织割断[1,2],降低了阴极基底的性能,特别是对阴极基底气密性影响较大。反挤压工艺在压制过程中材料处于三向高压应力应变状态,挤压件内部孔洞等缺陷充分减少,纤维 Cathode substrate is a key part of the laser gyro, is a thin-walled bowl-shaped metal parts, the current main use of bar machining, not only the material utilization is low, and the bar cutting the internal metal fiber tissue cutting [1,2], reduce The performance of the cathode substrate, in particular, has a greater impact on the air-tightness of the cathode substrate. The anti-extrusion process in the pressing process of materials in three-dimensional high-pressure stress and strain state, the extrusion holes and other defects fully reduced, the fiber