Manufacturing method for dual-metal dual-performance titanium alloy integral blade disc
The technology of a blisk and manufacturing method is applied in the field of bimetallic dual-performance titanium alloy blisk manufacturing, which can solve the problems of high powder cost, decline in metallurgical quality and mechanical properties, powder metallurgy quality and oxidation in the manufacturing process, and achieve manufacturing Low cost, good metallurgical quality in vacuum environment, excellent effect of metallurgical quality
Active Publication Date: 2017-09-08
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Problems solved by technology
The powder-feeding laser additive manufacturing method has problems such as high powder cost, powder metallurgy quality and oxidation in the manufacturing process, which lead to a decline in metallurgical quality and mechanical properties
Method used
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Embodiment 1
[0030] image 3 Shown is a bimetallic dual-performance titanium alloy blisk. The titanium alloy blisk is composed of a disc 1 and blades. The material of the disc 1 is Ti60 titanium alloy, and the material of the blades is Ti2AlNb alloy. A total of 60 blades are evenly distributed on the edge of the wheel disc 1 . Wheel disc 1 is prepared by isothermal forging method, and its size is The Ti2AlNb blade is manufactured by the electron beam fuse deposition additive method, and the height of the blade is 60 mm. The steps are as follows:
[0031] 1) Manufacture Ti2AlNb alloy wire with a diameter of 1.6mm by hot rolling and drawing process, the content of N, H, O interstitial elements in the wire is O≤0.2%, N≤0.05%, H≤0.01%;
[0032] 2) Forging the Ti60 titanium alloy wheel 1 blank, and adopting the standard heat treatment process of Ti60 material for solid solution and double annealing. CNC machining method is used to process the edge of the forged Ti60 titanium alloy wheel d...
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Abstract
The invention belongs to the technical field of engine manufacturing, and specifically discloses a manufacturing method for a dual-metal dual-performance titanium alloy integral blade disc, and a wheel disc [1] and a blade part of the integral blade disc are manufactured from different materials. The manufacturing method comprises the following steps of manufacturing titanium alloy blade blank of different materials by adopting an electron beam fused deposition additive manufacturing method on the basis of a wheel disc forged piece; then, performing mechanical processing or electrochemical machining until a designed dimension of a blade; and finally, realizing manufacturing of the dual-metal dual-performance titanium alloy integral blade disc. The manufacturing method has the characteristics of low manufacturing cost, a short period and high metallurgical quality. The blade and the wheel disc [1] are manufactured from different materials, so that mechanical property advantages of the materials can be sufficiently brought into play, the requirements, on high strength and high strain fatigue characteristics of the wheel disc [1], of the integral blade disc, and the requirements, on high stress fatigue and endurance properties, of the blade are met, and therefore, the purpose of reducing weight by enabling the whole blade disc to serve under a high temperature condition or replacing the high-temperature alloy integral blade disc is realized.
Description
technical field [0001] The invention belongs to the technical field of engine manufacturing, in particular to a method for manufacturing a bimetallic dual-performance titanium alloy integral blisk. Background technique [0002] The blisk is a structural form that integrates fan, compressor or turbine rotor blades and a disc [1], and is a must-have structure for advanced aero-engines at home and abroad. At present, the overall blisk is generally manufactured by integral processing or welding, without processing the tenon and tenon. The advantages of this overall structure are: the radial height and thickness of the rim of the blisk and the size of the original tenon of the blade can be greatly reduced, and the weight reduction effect is obvious; the structure of the engine rotor parts is greatly simplified; the split structure tenon is eliminated The escape loss of gas in the tooth root gap; avoiding the faults caused by fretting wear, cracks and lock piece damage caused by ...
Claims
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IPC IPC(8): B23P15/02
CPCB23P15/02
Inventor 张国栋熊华平袁鸿余槐王金雪程耀永张学军
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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