Manufacturing method of titanium alloy wide-chord hollow fan blade of aeroengine
A technology of aero-engines and fan blades, which is applied in the direction of machines/engines, liquid fuel engines, mechanical equipment, etc. It can solve the problems of poor welding quality, fatigue cracking of welding parts, etc., and achieve the effect of solving fatigue cracking and improving welding quality
Active Publication Date: 2016-03-30
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0005] In order to overcome the deficiency of poor welding quality of existing aero-engine fan blades, the invention provides a manufacturing method of aero-engine titanium alloy wide-chord hollow fan blades
Therefore, the problem of fatigue cracking of the welding part of the fan blade of the aero-engine is solved, and the welding quality of the fan blade of the aero-engine is improved
Method used
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[0028] Reference Figure 1-6 . The specific steps of the manufacturing method of the titanium alloy wide-chord hollow fan blades of the aeroengine of the present invention are as follows:
[0029] Step 1. Pre-treat the board, the board includes the upper panel 1, the middle core board 2, the lower panel 3; cut the upper panel 1, the middle core board 2 and the lower panel 3 into a rectangle;
[0030] Step 2. Remove the oxide scale on the surface of the board with an acid solution and then blow dry;
[0031] Step 3. Spray stripe-shaped solder stopper on the front and back sides of the middle core board 2 except for the edge welding part;
[0032] Step 4. Perform argon arc welding to seal the edges of the middle core plate 2 and the upper panel 1 and the lower panel 3, and leave an air inlet;
[0033] Step 5. After sealing and welding, drill holes on the other three sides of the plate except for the side where the air inlet is left. The holes are evenly distributed on the three sides. A...
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The invention discloses a manufacturing method of a titanium alloy wide-chord hollow fan blade of a titanium alloy wide chord hollow fan blade, so as to solve the technical problem that the welding quality of a fan blade of the conventional aeroengine is poor. The manufacturing method is characterized in that a riveting procedure is added before a superplastic forming procedure and a diffusion welding procedure; after seal welding, the rest three side edges of one side, where an air inlet is kept, of a plate are drilled and deburred, then rivets are put in holes for riveting; when the three side edges where the rivets are set are subjected to diffusion welding, pressure is applied to an upper panel, a lower panel and the rivets, so that diffusion welding surfaces are formed between the upper panel and the lower panel, between the rivets and the upper panel, and the rivets and the lower panel. Thus, the problem that a welding position of the fan blade of the aeroengine is subjected to fatigue cracking is solved, and the welding quality of the fan blade of the aeroengine is improved.
Description
Technical field [0001] The invention relates to a manufacturing method of aeroengine fan blades, in particular to a manufacturing method of aeroengine titanium alloy wide-chord hollow fan blades. Background technique [0002] Aeroengine is an important part of the aircraft. The performance of the engine directly affects the performance of the entire aircraft. The weight reduction of the engine can increase the thrust-to-weight ratio, and the hollow structure of the blade can reduce the overall weight of the engine. The wide-chord hollow blade not only has good performance and high efficiency, but also has improved resistance to foreign object impact. Therefore, it is the first choice for large bypass ratio turbofan engine fan blades. [0003] When wide-chord hollow fan blades are widely used in large bypass ratio aeroengines, a problem that needs to be solved is the vibration of the blades caused by flutter and aerodynamic torsion. In the European patent "Componentwithinternaldamp...
Claims
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Login to View More IPC IPC(8): B23P15/02
CPCB23P15/02B23P2700/01F04D29/388
Inventor 张定华杜随更任军学汪文虎王松林
Owner NORTHWESTERN POLYTECHNICAL UNIV