Disassembly method for nickel-base high-temperature alloy ring parts after interference assembly

The invention discloses a disassembly method for nickel-base high-temperature alloy ring parts after interference assembly, and belongs to the technical field of aero-engines. By the adoption of the disassembly method, the two nickel-base high-temperature alloy ring parts after interference assembly can be disassembled as the original ones without damaging the surfaces of the parts. The disassembly method includes the steps that step1, an internal seal head is manufactured for an assembly part; step2, a combination part with the internal seal head is placed in a heating box to be heated to 180 DEG C-200 DEG C, and then heat preservation is performed for 30-40 minutes; step3, the heated combination part with the internal seal head is taken out and placed on a working table, and liquid nitrogen is poured into the assembly part and then placed for 10-12 minutes; step4, the assembly part is taken out of the assembled parts, the liquid nitrogen is poured out from the assembly part, the internal seal head of the assembly part is removed, and then disassembly is completed.