A kind of superplastic forming/diffusion joining forming mould for split casting of equal thickness profile and preparation method thereof
A technology of superplastic forming and diffusion joining, which is applied in casting and forming equipment, mold components, manufacturing tools, etc., to achieve the effect of simple casting mold, lower production cost, and simple operation process.
Active Publication Date: 2022-07-05
SHENYANG AIRCRAFT CORP
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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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preparation example Construction
[0041] A method for preparing a superplastic forming / diffusion joining forming mould for split casting of equal thickness profiles, the superplastic forming / diffusion joining forming mould for split casting of equal thickness profiles comprises two parts, an upper mould and a lower mould, the upper mould and the The lower mold is composed of a profile part and a bracket part, and the above four parts are processed separately, including the following steps:
[0042] The first step is to prepare thick profile parts such as upper and lower molds
[0043] 1.1) First, extract the upper and lower surfaces of the parts in contact with the mold surface in the CATIA part theoretical model, and then stretch the contact surfaces along the normal direction to form a mold surface fractional mold of equal thickness. Parts are of the same thickness.
[0044] 1.2) According to the requirements on the digital model, design the blank holder, the inlet / exhaust hole 9, the temperature measuring ...
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The invention belongs to the field of aviation manufacturing engineering / aircraft assembly, and provides a superplastic forming / diffusion connection forming mold for split casting of equal-thickness profiles and a preparation method thereof. The superplastic forming / diffusion connection forming mold includes an upper mold and a lower mold. The upper mold and the lower mold are respectively composed of a profile part and a bracket part, and the above four parts are processed separately. The guide pin mounting plate is located in the middle of the two opposite sides of the upper and lower model surfaces, and there are hangers on both sides of the guide pin mounting plate; the temperature measuring hole and the air inlet / exhaust hole 9 are located on the side of the upper and lower model surfaces; the lightening slot is located on the upper mold bracket On the upper surface, the lightening groove runs through the entire bracket portion. The invention can maintain the accuracy of size and profile under high temperature and high pressure conditions, improve the manufacturing accuracy of superplastic forming / diffusion connecting parts, make the shape of the superplastic forming / diffusion connecting parts meet the assembly requirements, prolong the service life of the mold, reduce Cost of production.
Description
technical field [0001] The invention relates to a superplastic forming / diffusion joining forming mould for split casting of equal-thickness profiles and a preparation method thereof, which are used in the superplastic forming / diffusion joining forming process of large-scale complex multi-layer integral components of aircraft, and belong to aviation manufacturing engineering / aircraft Assembly field. Background technique [0002] Superplastic forming / diffusion joining technology has become an advanced manufacturing technology that promotes the design of modern aerospace structures and breaks through traditional sheet metal parts manufacturing. At present, the forming mold material used in superplastic forming / diffusion joining technology is generally made of high temperature resistant alloy steel 35Cr24Ni7SiNRe. The mold has a blank holder, inlet / exhaust holes, temperature measuring holes, lightening grooves, hangers and guide post holes in structure. and other structural ele...
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IPC IPC(8): B22C9/06B23P15/24
CPCB22C9/06B23P15/24
Inventor 迟彩楼王珏吴伟平
Owner SHENYANG AIRCRAFT CORP