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Welding method for box type part of air intake machine

A technology of intake casing and welding method, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of company waste, crack failure, unallowable use or scrapping, etc., to reduce repair costs and improve reliability , the effect of solving production bottlenecks

Active Publication Date: 2015-03-04
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a typical load-bearing weldment on the engine, many welding processes such as electron beam welding and argon arc welding are used on the intake casing. Because it mainly bears the radial force of the low-pressure rotor, part of the axial force and the engine's working Due to the influence of vibration stress, the stress environment is relatively complex, and crack failures are prone to occur at relatively weak points such as welds
According to relevant documents, when repairing the intake casing, it is necessary to carry out coloring inspection on the welds, and the parts with cracks will not be allowed to be used or scrapped, which has caused a lot of waste to the company

Method used

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  • Welding method for box type part of air intake machine
  • Welding method for box type part of air intake machine
  • Welding method for box type part of air intake machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A welding method for air intake casing parts is carried out according to the following steps:

[0030] (1) Carry out coloring inspection at the crack;

[0031] (2) Separate the variable camber blade, separate the support plate that needs to be repaired by welding and the fixing nut at the boss of the adjacent support plate;

[0032] (3) Process heat-conducting copper sleeves such as figure 2 , image 3 As shown, it is installed on the support of the intake casing, and the assembly gap with the intake casing is guaranteed to be 0.01mm;

[0033] (4) Punch holes at the end of the crack to arrest the crack;

[0034] (5) Rinse with acetone, degrease the cracks and adjacent positions with a width of about 30mm, and dehydrate with ethanol;

[0035] (6) Install the heat-conducting copper blocks of the tool set on the mounting holes of the supports that need to be repaired, and perform argon arc welding on the cracks according to the following regulations:

[0036] Type of ...

Embodiment 2

[0046] A welding method for air intake casing parts is carried out according to the following steps:

[0047] (1) Carry out coloring inspection at the crack;

[0048] (2) Separate the variable camber blade, separate the support plate that needs to be repaired by welding and the fixing nut at the boss of the adjacent support plate;

[0049] (3) Process heat-conducting copper sleeves such as figure 2 , image 3 As shown, it is installed on the support of the intake casing, and the assembly gap with the intake casing is guaranteed to be 0.03mm;

[0050] (4) Punch holes at the end of the crack to arrest the crack;

[0051] (5) Rinse with acetone, degrease the cracks and adjacent positions with a width of about 30mm, and dehydrate with ethanol;

[0052] (6) Install the heat-conducting copper blocks of the tool set on the mounting holes of the supports that need to be repaired, and perform argon arc welding on the cracks according to the following regulations:

[0053] Type of ...

Embodiment 3

[0063] A welding method for air intake casing parts is carried out according to the following steps:

[0064] (1) Carry out coloring inspection at the crack;

[0065] (2) Separate the variable camber blade, separate the support plate that needs to be repaired by welding and the fixing nut at the boss of the adjacent support plate;

[0066] (3) Process heat-conducting copper sleeves such as figure 2 , image 3 As shown, it is installed on the support of the intake casing, and the assembly gap with the intake casing is guaranteed to be 0.02mm;

[0067] (4) Punch holes at the end of the crack to arrest the crack;

[0068] (5) Rinse with acetone, degrease the cracks and adjacent positions with a width of about 30mm, and dehydrate with ethanol;

[0069](6) Install the heat-conducting copper blocks of the tool set on the mounting holes of the supports that need to be repaired, and perform argon arc welding on the cracks according to the following regulations:

[0070] Type of c...

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Abstract

The invention provides a welding method for a box type part of an air intake machine, and belongs to the technical field of repair of engines. The welding method comprises the following steps of (1) performing dye check at a crack part; (2) detaching blades with variable camber, support plates requiring repair welding, and a fixing screw cap at the boss part of the adjacent support plates; (3) processing a heat conduction copper sleeve, and installing on a box support seat of the air intake machine; (4) punching a hole in the tail end of the crack, and stopping the development of the crack; (5) using acetone to flush, degreasing the crack, and using alcohol for dewatering; (6) respectively arranging heat conduction copper blocks of a workpiece sleeve on mounting holes of the support seat requiring the repair welding, and performing argon arc electric welding on the crack; (7) performing the dye check on the repair welding part, wherein when the dye does not display, the box type part can be used. The welding method has the advantages that the repair quality and cycle of the engine are guaranteed; the repair cost is reduced, the value is created, and the application prospect is very broad; meanwhile, the process can be applied to similar machine parts, and the potential economic benefits are inestimable.

Description

technical field [0001] The invention belongs to the technical field of engine repair, and in particular relates to a welding method for air intake casing parts. Background technique [0002] As a typical load-bearing weldment on the engine, many welding processes such as electron beam welding and argon arc welding are used on the intake casing. Because it mainly bears the radial force of the low-pressure rotor, part of the axial force and the engine's working Due to the influence of vibration stress, the stress environment is relatively complex, and crack failures are prone to occur at relatively weak points such as welds. According to relevant documents, when repairing the intake casing, it is necessary to carry out color inspection on the welds, and the parts with cracks will not be allowed to be used or scrapped, which has caused a lot of waste to the company. Contents of the invention [0003] The invention makes full use of the structural design features of the machi...

Claims

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Application Information

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IPC IPC(8): B23P6/04
CPCB23K9/16B23P6/04
Inventor 赵军徐健赵会琴苏巧灵栾艳华
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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