Aircraft damage metal micro-droplet jetting 3D printing in-situ rapid repairing method

A 3D printing and micro-droplet spraying technology, which is applied in metal material coating process, fusion spraying, coating, etc., can solve the problems of poor practicability and achieve the effect of strong practicability, simple process and low cost

Active Publication Date: 2017-02-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the poor practicability of the existing aircraft damage repair me

Method used

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  • Aircraft damage metal micro-droplet jetting 3D printing in-situ rapid repairing method
  • Aircraft damage metal micro-droplet jetting 3D printing in-situ rapid repairing method

Examples

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Embodiment 1

[0025] Example 1: Repair of corrosion pits on the surface of 7075 aluminum alloy structural parts of large transport aircraft.

[0026] In the application of this embodiment, first use the sandblasting process (or acid-base corrosion method) to pre-treat the corrosion pits in the area 20 to be repaired on the damaged part 1 of the large-scale transport aircraft, remove the oxide layer and impurities on the surface, and then remove the oxide layer and impurities on the surface. The suction cup 2 adsorbs and fixes the in-situ rapid repair device of metal droplet injection 3D printing on the surface of the damaged aircraft part 1, and quickly locks the universal joint 3 and the telescopic rod by adjusting the quick locking telescopic rod 13 and the corresponding vacuum suction cup Universal joint 14, so that the two-dimensional laser profile scanner 19 is located directly above the area to be repaired 20, and then the two-dimensional laser profile scanner 19 is used in conjunction...

Embodiment 2

[0027] Example 2: Repair of scratches and cracks on the surface of the 2024 aluminum alloy skin of a small unmanned aerial vehicle.

[0028]The process of this embodiment is basically the same as that of Embodiment 1. The difference is mainly because the application object is a small unmanned aerial vehicle, and its volume is small, so it is impossible to use the vacuum chuck 2 to spray the entire metal droplet into the 3D printing prototype. The quick repair device is adsorbed and fixed on the surface of the damaged part 1 of the small unmanned aerial vehicle. At this time, the vacuum suction cup 2 can be replaced with a support seat, and then the adjustment of the fast locking telescopic rod 13 makes the whole repair device overhead on a small unmanned aerial vehicle. Above the man-machine, secondly, the raw material used in this embodiment is 2024 aluminum alloy, so the heating temperature inside the droplet generator needs to be adjusted accordingly. For 2024 aluminum alloy...

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Abstract

The invention discloses an aircraft damage metal micro-droplet jetting 3D printing in-situ rapid repairing method which is used for solving the technical problem that existing aircraft damage repairing methods are poor in practicability. According to the technical scheme, a metal melt jets single uniform micron-grade metal droplets through a nozzle under the action of the internal pressure of the metal melt, the uniform metal micro-droplets are controlled to be directionally accumulated point by point and layer by layer according to the specified trajectory based on the dispersed accumulation principle, and then rapid repairing forming of damaged metal parts is completed. According to the aircraft damage metal micro-droplet jetting 3D printing in-situ rapid repairing method, large-size energy equipment and special raw materials are not needed; in-situ repairing of multi-material damaged parts including active metal can be achieved; repairing equipment is portable; the process is simple; the cost is low; in-situ flexible rapid repairing of aircraft damage can be completed; and the practicability is high.

Description

technical field [0001] The invention relates to an aircraft damage repair method, in particular to an aircraft damage metal droplet jet 3D printing in-situ rapid repair method. Background technique [0002] Aircraft refers to any machine that obtains aerodynamic lift-off through the relative motion of the fuselage and the air (not the reaction of the air to the ground), mainly including airships, airplanes, gliders, rotorcraft, helicopters, orthopters, tilting aircraft, etc. Gyroplanes, etc. Aircraft are used in a wide range of applications. In the military, they can be used for weapons, anti-submarine, and transport of troops; in civilian use, they can be used for freight, passenger transport, agriculture, meteorology, and aerial detection. During the long-term service of aircraft, its structural parts usually suffer from corrosion, wear and other forms of damage, especially in high-salt and high-humidity environments in coastal areas and island areas, aircraft are prone t...

Claims

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Application Information

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IPC IPC(8): C23C4/123C23C4/06B33Y10/00
CPCB33Y10/00C23C4/06
Inventor 齐乐华伊浩罗俊张代聪李晨晨刘浩伯杨方
Owner NORTHWESTERN POLYTECHNICAL UNIV
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