Manufacturing method of titanium alloy wide-chord hollow fan blade for aero-engine
A technology for aero-engines and fan blades, which is applied to machines/engines, liquid fuel engines, mechanical equipment, etc., can solve problems such as poor welding quality and fatigue cracking of welded parts, and achieve the effect of solving fatigue cracking and improving welding quality.
Active Publication Date: 2017-07-28
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] refer to Figure 1-6 . The specific steps of the manufacturing method of the titanium alloy wide-chord hollow fan blade of the aero-engine of the present invention are as follows:
[0029] Step 1. Carry out pretreatment to plate, described plate comprises upper panel 1, middle core board 2, lower panel 3; Upper panel 1, middle core board 2 and lower panel 3 are cut into rectangle;
[0030] Step 2. Blow dry after removing the scale on the surface of the plate with an acid solution;
[0031] Step 3. Spray stripe-shaped solder stopper on the front and back of the middle core board 2 except for the edge welding part;
[0032] Step 4. Carry out argon arc welding welding of the middle core board 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 the side where the air inlet is left. The holes are evenly distributed on the three sides. After the holes are...
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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 an aero-engine fan blade, in particular to a manufacturing method of an aero-engine titanium alloy wide-chord hollow fan blade. Background technique [0002] The aero engine 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 improve the thrust-to-weight ratio, and the hollow structure of the blade can reduce the overall weight of the engine. Wide-chord hollow blades not only have good performance and high efficiency, but also have improved resistance to foreign object impact, so they are the first choice for fan blades of turbofan engines with large bypass ratio. [0003] When wide-chord hollow fan blades are widely used in high bypass ratio aeroengines, a problem that must be solved is the vibration caused by flutter and aerodynamic torsion of the blades. In the European patent "Component ...
Claims
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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