High-temperature alloy complex thin-wall part fluid medium forming die and high-temperature alloy complex thin-wall part fluid medium multi-pass forming method

A fluid medium and forming die technology, applied in the field of fluid medium forming die and multi-pass forming of complex thin-walled superalloy parts, can solve the problems of increasing manufacturing difficulty, uneven structure, forming and manufacturing difficulty, etc., and reduce deformation resistance. and equipment tonnage, improve the plastic deformation ability of materials, high film degree and high precision effect

CN113020392AInactive Publication Date: 2021-06-25BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-06-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-temperature alloy complex thin-wall part fluid medium forming die and a high-temperature alloy complex thin-wall part fluid medium multi-pass forming method. A deep-cavity complex high-temperature alloy thin-walled part is taken as a research object, a three-pass fluid medium deep drawing forming process scheme is designed according to geometrical characteristics of the deep-cavity complex high-temperature alloy thin-walled part, namely, a cylindrical part is formed by a first pass fluid medium, in the second pass, on the basis of a large-size cylindrical blank, the fluid medium forms a transition part with a bottom small fillet feature, and in the third pass, the fluid medium forms a final part meeting the requirement. When the forming method is used for forming the deep-cavity type complex high-temperature alloy thin-wall part, the problems of low forming limit, low local small fillet feature forming precision and serious rebound caused by a traditional forming method can be effectively solved, local defects of the part are reduced, and the advantage is remarkable.
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Description

technical field

[0001] The invention belongs to the technical field of compound precision forming, and in particular relates to a fluid medium forming die and a multi-pass forming method of a high-temperature alloy complex thin-walled part, which can also be extended and applied to other parts with similar characteristics. Background technique

[0002] Superalloys have high high temperature strength, good high temperature oxidation resistance and hot corrosion resistance under high temperature service environment conditions, and have good fatigue resistance, plastic toughness and other comprehensive properties. Aerospace engines are the power source of aircraft. Superalloys are widely used in the key parts of aerospace engines due to their excellent performance. They require long life and stable operation under high temperature, high speed, high load, complex stress state, and frequent alternating temperatures. , the working conditions are extremely harsh, and the reliabilit...

Examples

Embodiment

[0054] The following is based on Figure 1-6 Describe in detail a typical deep cone shape forming process formed by a fluid medium multi-pass forming method for complex thin-walled superalloy parts in a specific embodiment of the present invention, including the following steps:

[0055] 1) According to the shape of the final part, design the structure of the first pass transitional forming die, and obtain the diameter and forming height of the punch in the first pass transitional forming die; design the initial blank 7 according to the structure of the first pass transitional forming die;

[0056] 2) Clean the surface of each part before the assembly of the transition forming mold in the first pass to ensure the surface quality of the product and the service life of the mold equipment;

[0057] 3) if figure 1 As shown, the first pass transition forming mold is assembled, and the first pass transition forming mold is installed on the fluid medium forming equipment for debuggi...