Composite manufacturing method of metal reinforced edge of aero-engine fan blade

Abstract

The invention relates to a composite manufacturing method for a metal reinforcing edge of an aero-engine fan blade. For the first prefabricated part model and the second prefabricated part model, the first prefabricated part and the second prefabricated part are obtained; the two ends of the fan blade shape are extended to obtain the core model model, and then the core model model is divided into multiple block models , make the divided parts and the core mold; the first preform and the second preform are attached to both sides of the core mold, and the core mold and the first preform and the second preform are fixed by pins to form an integral structure; The integral structure is placed in a vacuum diffusion welding furnace for diffusion welding; after welding, the extended parts with pins at both ends of the integral structure are cut off. Compared with the prior art, the present invention has the advantages of improving the utilization rate of materials, shortening the processing cycle, and greatly reducing the difficulty of cutting.

Description

technical field [0001] The invention relates to the field of manufacturing thin-walled deep cavity reinforced edges, in particular to a composite manufacturing method for metal reinforced edges of aero-engine fan blades. Background technique [0002] Due to the advantages of light weight, low noise and strong anti-vibration performance, carbon fiber composite fan blades have become the mainstream choice for commercial aircraft engines. However, the impact resistance, compression resistance and lightning resistance of the leading edge of the composite blade are still insufficient compared with metal blades. By adding titanium alloy edging on the leading edge of the composite blade, the overall performance of the composite blade can be significantly improved. performance. [0003] In order to adapt to the shape of the leading edge of the composite fan blade, the titanium alloy reinforcement edge often has a complex deep cavity thin-walled special-shaped structure. If the ove...

AI Technical Summary

Problems solved by technology

But there is following deficiency in this method: 1, the step is loaded down with trivial details, needs the preliminary welding for the first time and follow-up welding strengthening

At the same time, the prefabricated part needs to be welded by argon arc welding to form a sealed structure. The sealed structure includes two prefabricated parts, a mandrel, and two seals, etc. Since the mandrel, the prefabricated part and the sealing parts are made of different materials, the argon arc welding Difficulty welding

2. Welding reinforcement is carried out through the air pipe of the seal and the high-temperature pressure-holding device, which is basically difficult to achieve, and the quality of the connection interface cannot be guaranteed

3. It cannot be used to manufacture metal reinforcement edges with large length and deep thin-walled deep cavity

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