Equal-thickness moulding surface splitting casting superplastic forming/diffusion connection forming mould and preparation method thereof

Abstract

The invention belongs to the field of aeronautical manufacturing engineering / aircraft assembly and provides an equal-thickness moulding surface splitting casting superplastic forming / diffusion connection forming mould and a preparation method thereof. The superplastic forming / diffusion connection forming mould comprises two parts of an upper mould body and a lower mould body; the upper mould body and the lower mould body are composed of a moulding surface part and a bracket part correspondingly; and the four parts are machined correspondingly. Guiding pin mounting plates are located in the middles of the two opposite side faces of the upper and lower mould moulding surfaces; hanging columns are arranged on the two sides of the guiding pin mounting plates; temperature measuring holes and air feeding / discharging holes (9) are formed in the side faces of the upper and lower mould moulding surfaces; and lightening grooves are formed in the upper surface of an upper mould bracket and penetrate through the whole bracket part. According to the superplastic forming / diffusion connection forming mould and the preparation method thereof, accuracy of the dimension and moulding surface can be kept under the high temperature and high pressure conditions, the manufacturing precision of superplastic forming / diffusion connection parts is improved, thus the shapes of the superplastic forming / diffusion connection parts meet the assembly requirements, the service life of the mould is prolonged, and the production cost is reduced.

Description

technical field [0001] The invention relates to a superplastic forming / diffusion connection forming mold for separate casting of equal-thickness profiles and a preparation method thereof, which is used in the superplastic forming / diffusion connection forming process of large complex multi-layer integral components of aircraft, and belongs to aviation manufacturing engineering / aircraft Assembly area. Background technique [0002] Superplastic forming / diffusion bonding technology has become an advanced manufacturing technology that promotes the design of modern aerostructures and breaks through the traditional manufacturing of sheet metal parts. At present, the forming mold material used in superplastic forming / diffusion bonding technology generally uses high-temperature resistant alloy steel 35Cr24Ni7SiNRe, and the mold has a structure with edge holders, inlet / exhaust holes, temperature measuring holes, lightening grooves, hanging rods and guide post holes. and other structu...

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention aims at the characteristics of the mold technology used in the superplastic forming / diffusion bonding forming process of large complex multi-layer integral components of aircraft, and provides a mold with stable structure, good strength and rigidity, etc. The superplastic forming / diffusion bonding forming mold of thick surface split casting and its preparation method have simple process operation, few defects in the casting process, and high precision after the mold is prepared, which is beneficial to the precision of large complex multi-layer integral components of aircraft take shape

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