Fan blade metal sealing edge and machining method thereof

Abstract

The invention discloses a fan blade metal sealing edge and a processing method thereof, and the processing method comprises the following steps: carrying out mold pressing on a metal plate to obtain a preformed plate; the pre-forming plate is fixedly connected with the clamp assembly; wherein the clamp assembly comprises at least one first shape follow-up clamp and a plurality of second shape follow-up clamps, and the inner side of the pre-forming plate and the first shape follow-up clamps are fixed through a high-strength adhesive; performing high-energy beam deposition on the preformed plate to form a solid part with a preset shape; performing postweld heat treatment on the preformed plate and the clamp assembly together, and removing the high-strength adhesive through high-temperature volatilization; and then machining the preformed plate to a preset size, carrying out polishing and surface treatment, and removing the clamp assembly to obtain the fan blade metal sealing edge. The first shape follow-up clamp and the second shape follow-up clamp are adopted to be matched with the shape of the preformed plate for clamping, the preformed plate is connected through the high-strength adhesive volatilized at high temperature, shape correction is convenient, machining deformation is effectively restrained, buckling deformation is limited within 1 mm, and the product performance is improved.

Description

Technical field [0001] The present invention relates to the field of fan blade processing technology, in particular to a fan blade metal edge banding and processing method thereof. Background [0002] As one of the key components of the aero engine, the composite fan blade effectively reduces the weight of the aero engine, but because the carbon fiber composite material itself is inferior to the metal in resistance to bird impact and erosion, and it is easy to crack and delaminate during high-speed rotation, the composite fan blade adopts metal reinforcement edge, including the leading edge reinforcement edge and the tail edge reinforcing edge. [0003] Due to the large size of the metal reinforcement edge, the difference in overall and local stiffness, and the high requirements for dimensional accuracy, the traditional machining method has problems such as difficulty in V-shaped groove processing, long cycle, large material consumption, and large overall deformation of the reinf...

AI Technical Summary

Problems solved by technology

[0003] Due to the large size of the metal reinforcement edge, poor overall and local rigidity, and high dimensional accuracy requirements, the traditional machining method has problems such as difficulty in V-shaped groove processing, long cycle, large material consumption, and large overall deformation of the reinforcement edge; Processing by plastic forming / diffusion welding connection method, because there are at least two thermal cycles in the processing process, there is also the problem of difficulty in overall deformation control

[0004] Some processing technologies in the prior art adopt the method of direct forming by laser deposition, and at the same time, the support frame is added in sections during the layer-by-layer accumulation process to increase the rigidity and reduce the deformation, but the support frame used in this method is also made of laser Accumulation will also cause deformation during the forming process, so the deformation cannot be effectively controlled, which will affect the performance of the material; moreover, the surface of the laser forming is relatively rough, and the inner wall of the V-shaped groove still needs to be processed, which cannot effectively reduce the cost

Images