In-situ brazing repair method for aircraft suspended beam guide pipe

A catheter and brazing technology, which is applied to welding equipment, tubular objects, gas flame welding equipment, etc., can solve the problems of difficult repair and the inability to disassemble and replace the catheter, and achieve the effect of promoting spreading and wetting and ensuring reliability

Pending Publication Date: 2022-02-11
大连长丰实业总公司
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Problems solved by technology

At the same time, considering that the catheter cannot be disassembled and replaced, it can only be repaired in situ and the repair is difficult
At present, there is no effective method in the entire aviation manufacturing and aviation repair industry to ensure the integrity and repair requirements of the hydraulic conduits in the aircraft hanging beam system for the hydraulic conduits that cannot be decomposed

Method used

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  • In-situ brazing repair method for aircraft suspended beam guide pipe
  • In-situ brazing repair method for aircraft suspended beam guide pipe

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Embodiment Construction

[0021] The specific implementation manners of the present invention are further explained below in conjunction with the examples and accompanying drawings, but are not intended to limit the present invention.

[0022] like figure 2 Shown, a kind of in-situ brazing repair method of aircraft hanging beam conduit, comprises the following steps:

[0023] Step 1: Carry out clamp repair on the two fractured end surfaces of the hanging beam conduit, so that the fractured end surface after clamp repair is flat and smooth, and ensure that the end surface is perpendicular to the axial direction, and the roughness of the end surface and the outer surface of the conduit within 30mm from the end surface is not higher than Ra0 .2mm;

[0024] Step 2: Refer to the pipe joint form in HB8165-2002 "Brazing Smooth Straight-through Pipe Joints" to design the connection sleeve 2 for flame brazing. The size of the connection sleeve 2: outer diameter Ф2.0mm, inner diameter Ф1.1mm, length 15mm .

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Abstract

The invention provides an in-situ brazing repair method for an aircraft suspended beam guide pipe, and belongs to the technical field of aviation equipment repair. By controlling the flame length, the problem that the repaired part cannot be reached is solved, it is guaranteed that the brazing filler metal is melted at the repaired part through the flame, and filling of the gap between a hydraulic guide pipe and a sleeve with the liquid brazing filler metal is guaranteed through the capillary action; and the reliability of the flame brazing in-situ repair method for the suspended beam guide pipe is ensured by adopting a method of combining theoretical calculation and a mechanical property test. The method is suitable for the suspended beam guide pipe which cannot be decomposed and is narrow in spatial position in aircraft repair, has certain convenience, and can be popularized and applied to field repair of similar products of field forces.

Description

technical field [0001] The invention belongs to the technical field of aviation equipment repair, and relates to an in-situ brazing repair method for an aircraft suspension beam conduit. Background technique [0002] The function of the aircraft weapon hanging beam is to carry and release airborne weapons. The main function of the hydraulic conduit in the hanging beam system is to transmit power for the launching action of the weapon in the hydraulic servo system. Therefore, the performance of the hydraulic conduit of the hanging beam is directly related to Aircraft combat performance. During aircraft maintenance, it was found that the hydraulic conduit in the weapon hanging beam system was cracked, but the conduit could not be disassembled and replaced, so it could only be repaired in situ. [0003] According to the existing catheter repair technology in aviation repair factories, tungsten argon arc welding (TIG welding for short), molten argon arc welding (MIG welding for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K5/00B23K5/213B23K5/22B23K101/06
CPCB23K5/213B23K5/006B23K5/22B23K2101/06
Inventor 晁耀杰高子强席家利牟津瑶
Owner 大连长丰实业总公司
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