Titanium alloy welding type integral blade disc machining method

Abstract

The invention relates to the technical field of aero-engines, and discloses a titanium alloy welding type integral blade disc machining method. The method comprises the following steps that 1, an integral blade disc and a welding part are machined; 2, the integral blade disc and the welding part are welded; 3, aging heat treatment is carried out; 4, blades are milled; 5, the blade shape and a runner are subjected to vibration polishing; 6, the inner profile and the outer profile of the welding part are subjected to finish machining; 7, a hole system and a groove type are drilled; 8, an outer spline is inserted; 9, the whole surface of the integral blade disc is subjected to penetration inspection; 10, a wear-resisting material is sprayed; 11, a coating is ground; 12, static balance is carried out; 13, a dry film lubricating agent is coated; and 14, wet sand blasting is carried out. According to the method, the machining period of the titanium alloy welding type integral blade disc canbe shortened, the tool and cutter manufacturing cost can be saved, and the size precision and the surface quality state of the part after forming can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of aero-engines, and in particular provides a method for processing a titanium alloy welded blisk. Background technique [0002] The overall blisk of titanium alloy is a single-disk part structure, and the processing technology and processing technology are becoming more and more mature. At present, the processing methods such as turning and milling are used in the industry. The titanium alloy welded blisk parts have a total length of about 500mm, an outer diameter of 110mm at the journal, and a wall thickness of 3mm. The overall structure is thin-walled and weakly rigid, and has structural characteristics such as deep cavities, semi-closed complex cavities, and multiple types of small holes. , the size and shape requirements are not easy to guarantee; the blades also show the shape characteristics of mutual occlusion and bending and sweeping combination between the blades, the material hardness is low, the ...

AI Technical Summary

Problems solved by technology

The titanium alloy welded blisk parts have a total length of about 500mm, an outer diameter of 110mm at the journal, and a wall thickness of 3mm. The overall structure is thin-walled and weakly rigid, and has structural characteristics such as deep cavities, semi-closed complex cavities, and multiple types of small holes. , the size and shape requirements are not easy to guarantee; the blades also show the shape characteristics of mutual occlusion and bending and sweeping combination between the blades, the material hardness is low, the elastic modulus is small, and problems such as deformation and cutting are prone to occur during processing; due to cold and hot The process is carried out alternately, and the processing system is extremely unstable. In the process, a series of issues such as allowance, clamping, and deformation must be considered according to the characteristics of the cold and hot processes, and a qualified and effective process plan should be designed.

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