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Method for coating abradable coating of composite containing ring of aircraft engine

An aero-engine and composite material technology is applied in the coating field of aero-engine composite containing ring abradable coatings, which can solve the problems of inability to realize the coating of composite containing rings abradable coatings and the high cost of thermal spray coatings, Achieving the effect of avoiding impact and reducing manufacturing cost

Active Publication Date: 2014-12-10
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal spray coating is usually used to manufacture the sealing coating on the inner surface of military aircraft engine fan case, but thermal spray coating is expensive and requires large-scale professional thermal spray equipment and expensive spray powder materials
At the same time, since the maximum temperature resistance of the composite material containment ring is not more than 120°C, and the thermal spraying process generally reaches thousands of degrees Celsius, the thermal spraying process cannot achieve the coating of the composite material containment ring with an abradable coating

Method used

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  • Method for coating abradable coating of composite containing ring of aircraft engine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Surface cleaning: place the fan casing assembly horizontally on the rotating tooling, and the front port with the larger inner diameter of the casing 1 in the fan casing assembly faces the operator. Then, dip the sealing surface of the composite containment ring 2 with Wipe the surface of the composite containment ring 2 with alcohol cloth to remove the grease on the surface;

[0025] 2. Prepare the primer of the abradable coating: the formula of the primer of the abradable coating is: the polyamine curing agent accounts for 10% of the weight of the primer of the abradable coating, and the balance is rubber-modified epoxy resin; the abradable coating The preparation method of the first-layer primer is as follows: weigh the two raw materials of the wearable first-layer primer according to the proportion, put them into a container, and stir for 10 minutes with a mechanical stirrer; the polyamine curing agent is: diethylenetriamine.

[0026] 3. Prepare the abradable coa...

Embodiment 2

[0032] 1. Surface cleaning: place the fan casing assembly horizontally on the rotating tooling, and the front port with the larger inner diameter of the casing 1 in the fan casing assembly faces the operator. Then, dip the sealing surface of the composite containment ring 2 with Wipe the surface of the composite containment ring 2 with a cloth strip of acetone to remove the grease on the surface;

[0033]2. Prepare the primer of the abradable coating: the formula of the primer of the abradable coating is: the polyamine curing agent accounts for 15% of the weight of the primer of the abradable coating, and the balance is rubber-modified epoxy resin; the abradable coating The preparation method of the first-layer primer is as follows: weigh the two raw materials of the wearable first-layer primer in proportion, put them into a container, and stir for 15 minutes with a mechanical stirrer; the polyamine curing agent is: diethylenetriamine.

[0034] 3. Preparation of the abradable ...

Embodiment 3

[0040] 1. Surface cleaning: place the fan casing assembly horizontally on the rotating tooling, and the front port with the larger inner diameter of the casing 1 in the fan casing assembly faces the operator. Then, dip the sealing surface of the composite containment ring 2 with Wipe the surface of the composite containment ring 2 with alcohol or acetone to remove the grease on the surface;

[0041] 2. Prepare the primer of the abradable coating: the formula of the primer of the abradable coating is: the polyamine curing agent accounts for 20% of the weight of the primer of the abradable coating, and the balance is rubber-modified epoxy resin; the abradable coating The preparation method of the first-layer primer is as follows: weigh the two raw materials of the wearable first-layer primer according to the proportion, put them into a container, and stir for 20 minutes with a mechanical stirrer; the polyamine curing agent is: triethylenetetramine.

[0042] 3. Preparation of the...

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Abstract

The invention belongs to a surface processing technology and relates to a method for coating an abradable coating of a composite containing ring of an aircraft engine. The method for coating the abradable coating (3) is characterized by including the following steps that a surface is cleaned; prime paint of the abradable coating is prepared; surface course paint of the abradable coating is prepared; the abradable coating is coated with the prime paint; the abradable coating is coated with the surface course paint; solidification is performed; turning is performed. According to the method for coating the abradable coating of the composite contaiing ring of the aircraft engine, the manufacturing cost of a fan casing assembly is greatly reduced.

Description

technical field [0001] The invention belongs to the surface treatment technology, and relates to a method for coating an abradable coating of an aeroengine composite material containment ring. Background technique [0002] For the structure of a new type of aero-engine fan casing assembly, see figure 1 , a composite material containment ring 2 is added to the aero-engine fan casing assembly, which is connected with the casing 1 as a whole by bonding. The sealing between the casing 1 and the fan blades has always been a key technology in engine design and manufacture, because the material should not only play a role in sealing, but also not cause damage to the fan blades. Thermal spray coating is usually used to manufacture the sealing coating on the inner surface of military aeroengine fan case, but thermal spray coating is expensive and requires large-scale professional thermal spray equipment and expensive spray powder materials. At the same time, since the maximum tempe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D3/00B05D7/24B32B27/06B32B27/38C09D163/00C09D7/12
Inventor 滕瑞蒲胜利姚红卫李尤贵刘长刚刘平
Owner AECC AVIATION POWER CO LTD