Integral thermoforming method for aero-engine nozzle
A technology of aero-engine and nozzle, which is applied in the direction of engine components, forming tools, mechanical equipment, etc., can solve the problems of short service life of aero-engine, high rate of rejects in ordinary thermoforming, and low fatigue limit of nozzle, and achieve effective It is beneficial to metal flow, does not damage the mechanical properties, and has the effect of improving the working life
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Embodiment 1
[0046] A preparation method of an aero-engine nozzle overall thermoforming method, comprising the steps of:
[0047] S1: Cutting to the length of the draft tube blank, removing the irregular parts on both ends, and grinding to remove the burrs on both ends of the superalloy tube blank;
[0048] S2: Apply graphite lubricating agent on the inner wall of the tube, and pour into the tube the tin alloy heated and melted beforehand after fully drying. The preparation method is as follows:;
[0049] Add metal tin to the induction cooker and heat to 320-350°C, then add metal lead, stir at a speed of 60-70r / min for 5-10 minutes, remove the ash floating on the liquid surface, then add metal indium, and continue stirring for 5 minutes , Remove the ash on the liquid surface, then add MX200 antioxidant and cast it, pour the tin alloy block and cool it for later use.
[0050] S3 Put the superalloy tube filled with tin alloy into the bending die, first apply 5t pressure for 20s, then conti...
Embodiment 2
[0059] A preparation method of an aero-engine nozzle overall thermoforming method, comprising the steps of:
[0060] S1: Cutting to the length of the draft tube blank, removing the irregular parts on both ends, and grinding to remove the burrs on both ends of the superalloy tube blank;
[0061] S2: Apply graphite lubricating agent on the inner wall of the tube, and pour the tin alloy heated and melted into the tube after it is fully dried. The tin alloy includes the following mass percentages: 18% tin, 60% bismuth and 22% indium; Preparation method is identical with embodiment 1;
[0062] S3 Put the superalloy tube filled with tin alloy into the bending die, first apply 5t pressure for 20s, then continue to apply pressure to 10t for 10s, apply pressure twice for bending, and obtain a bent alloy tube;
[0063] S4: Use a copper rod to gently tap the folds of the leaf basin of the guide tube repeatedly to repair the shape, then put the wrinkled guide tube into the bending mold, ...
Embodiment 3
[0071] A preparation method of an aero-engine nozzle overall thermoforming method, comprising the steps of:
[0072] S1: Cutting to the length of the draft tube blank, removing the irregular parts on both ends, and grinding to remove the burrs on both ends of the superalloy tube blank;
[0073] S2: Apply graphite lubricating agent on the inner wall of the tube, and pour into the tube the tin alloy which has been heated and melted beforehand after being fully dried. Preparation method is identical with embodiment 1;
[0074] S3 Put the superalloy tube filled with tin alloy into the bending die, first apply 5t pressure for 20s, then continue to apply pressure to 10t for 10s, pressurize twice for bending;
[0075] S4: Use a copper rod to gently tap the folds of the leaf basin of the guide tube repeatedly to repair the shape, then put the wrinkled guide tube into the bending mold, apply pressure to 10t, and continue for 10s to correct the shape;
[0076] S5: Heat the superalloy ...
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Abstract
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