针对钛合金零件的表面超差,采用爆炸喷涂Ni Cr-Cr3C2的工艺对其进行尺寸修复。爆炸喷涂获得的涂层组织均匀,结合强度大于70MPa,显微硬度大于650Hv,且该修复工艺对钛合金基材无影响。修复后的钛合金零件尺寸公差、密封性均满足要求,已通过装配测试。 Titanium alloy parts for the surface of ultra-poor, the use of explosive spraying Ni Cr-Cr3C2 process its size repair. The coating obtained by explosive spraying has a uniform microstructure, the bonding strength is greater than 70MPa, the microhardness is greater than 650Hv, and the repairing process has no effect on the titanium alloy substrate. Repaired titanium alloy parts size tolerances, tightness to meet the requirements, has passed the assembly test.