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Method for size renovation of aerospace parts

A technology of parts and size, applied in the field of repairing the size of aviation parts, can solve the problems affecting the quality of product maintenance, large capital investment, complex process and so on

Inactive Publication Date: 2016-03-16
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technologies are currently widely used and relatively mature, but the spraying method and electroplating method require expensive equipment and complicated processes; the nesting method requires special aviation spare parts, whether from aviation OEM or PDM suppliers, aviation spare parts have always been relatively expensive ; while the welding rule involves side effects such as deformation that need to be solved, which also seriously affects the quality of product maintenance, often resulting in rework and parts scrapping
For this reason, it is difficult to reduce the cost of aviation maintenance, which has always occupied a large capital investment.

Method used

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  • Method for size renovation of aerospace parts
  • Method for size renovation of aerospace parts
  • Method for size renovation of aerospace parts

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The application of wear-resistant epoxy materials in factory repairing aviation parts size method parts such as figure 2 , image 3 shown. This part is the gearbox casing of the aviation turbine starter. The position marked by 3 in the figure is the place where the size of the part is insufficient due to the hole on the casing worn by its shaft during work, and it needs to be repaired to restore the size. The quality requirement for the wear part is to have a certain hardness and at the same time have grindability.

[0029] Follow the steps below to fix it:

[0030] 1) Machining to remove surface corrosion

[0031] Turning to remove the surface corrosion of the parts to be repaired until the metal matrix is ​​completely exposed;

[0032] 2) Surface roughening

[0033] Use the method of sand blowing to roughen the surface of the parts, and the sand grains should be within the range of 120-220 mesh;

[0034] 3) Surface cleaning and finishing

[0035] Clean the sur...

Embodiment 2

[0045] The technical solution of embodiment 2 is basically the same as that of embodiment 1, the difference lies in step 6) colloid solidification: solidify at a temperature of 100° C. in an air heating furnace for 1 hour, then naturally cool to room temperature, and place for processing after 1 day.

Embodiment 3

[0047]The technical scheme of embodiment 3 is basically the same as that of embodiment 1, the difference lies in step 6) colloid solidification: solidify at a temperature of 160° C. in an air heating furnace for 1 hour, then naturally cool to room temperature, and place for processing after 1 day.

[0048] For the above scheme, the test piece is taken in the factory, and the simulation test is carried out according to the corresponding working conditions. After passing the vibration test and thermal shock test, the appearance and structure are normal and meet the use requirements. After destructive inspection, it was found that the bonding surface reached 100%, and the inside of the grinding sealing layer was free of pores and voids.

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Abstract

The invention provides a method for size renovation of aerospace parts, and belongs to the field of aerospace part repairing. The method comprises the following steps: 1) removing surface corrosion through machining; 2) surface roughening; 3) surface cleaning and finishing; 4) colloid preparation: adopting an epoxy resin adhesive material comprising a component A and a component B, and fully stirring the epoxy resin adhesive material at 20 DEG C to show the best viscous state, wherein the component A is epoxy resin, the component B is a hardening component, and the weight ratio of the component A to the component B is 100:17; 5) colloid applying; 6) colloid curing: adopting a room temperature method or a heating method to realize colloid curing; 7) size machining. According to the method, a wearproof epoxy colloid material which is maturely used in industry and can meet aerospace part utilization requirements is used for realizing effective size renovation of the aerospace parts, so that the parts can be reused, and higher cost generation caused by replacement of new parts is avoided.

Description

technical field [0001] The invention belongs to the field of repairing aviation parts, and in particular relates to a method for repairing the size of aviation parts. Background technique [0002] At present, in the field of aviation parts repair, inserting method, spraying method, spray welding method, welding method and electroplating method are widely used in China to repair the worn size. These technologies are currently widely used and relatively mature, but the spraying method and electroplating method require expensive equipment and complicated processes; the nesting method requires special aviation spare parts, whether from aviation OEM or PDM suppliers, aviation spare parts have always been relatively expensive ; And the side effects that need to be solved such as deformation involved in the welding rule also seriously affect the quality of product maintenance, often resulting in rework and parts scrapping. For this reason, it is difficult to reduce the cost of avi...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J5/02C09J5/06
Inventor 郑明王昶鲁晶磊苏丹张立艳
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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