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A kind of turbine blade thermal barrier coating finish protection device and method

A thermal barrier coating, turbine blade technology, applied in coatings, metal material coating processes, grinding/polishing equipment, etc. question

Active Publication Date: 2022-07-05
AECC AVIATION POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when performing non-damage finishing treatment on the surface of the thermal barrier coating of turbine blades, due to the curved structure of the turbine blades, the parts with large curvature (such as the air intake edge) are prone to over-finishing problems; at the same time, when finishing , the abrasive particles are broken, and the broken abrasive particles easily enter the inner cavity of the turbine blade and cannot be cleaned effectively, and there is a large technical risk

Method used

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  • A kind of turbine blade thermal barrier coating finish protection device and method
  • A kind of turbine blade thermal barrier coating finish protection device and method
  • A kind of turbine blade thermal barrier coating finish protection device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] (1) Preparation before wax seal protection.

[0070] The solid paraffin is melted at high temperature, and the melted paraffin is poured into a beaker for use.

[0071] (2) Wax seal protection treatment.

[0072] Operation ①: Holding the tenon part of the blade 5 to be decorated, slowly put the blade body of the blade into the melted paraffin solution and let it stand for 20 seconds to ensure that the paraffin is immersed in the inner cavity and hole of the blade 5 to be decorated; Operation ②: Put the The finishing blade 5 is taken out and cooled in the air until the paraffin on the blade surface and the inner cavity solidifies.

[0073] Operation ①: Hold the tenon part of the blade 5 to be decorated, slowly put the blade body of the blade into the melted paraffin solution and let it stand for 10 seconds to ensure that the paraffin is immersed in the inner cavity and hole of the blade 5 to be decorated; Operation ②: Put the The finishing blade 5 is taken out and cool...

Embodiment 2

[0090] (1) Preparation before wax seal protection.

[0091] The solid paraffin is melted at high temperature, and the melted paraffin is poured into a beaker for use.

[0092] (2) Wax seal protection treatment.

[0093] Operation ①: Holding the tenon part of the blade 5 to be decorated, slowly put the blade body part of the blade into the melted paraffin solution and let it stand for 15 seconds to ensure that the paraffin is immersed in the inner cavity and hole of the blade to be decorated 5; Operation ②: Put the The finishing blade 5 is taken out and cooled in the air until the paraffin on the blade surface and the inner cavity solidifies.

[0094] Operation ①: Holding the tenon part of the blade 5 to be decorated, slowly put the blade body part of the blade into the melted paraffin solution and let it stand for 8s to ensure that the paraffin is immersed in the inner cavity and hole of the blade 5 to be decorated; Operation ②: Put the The finishing blade 5 is taken out and...

Embodiment 3

[0111] (1) Preparation before wax seal protection.

[0112] The solid paraffin is melted at high temperature, and the melted paraffin is poured into a beaker for use.

[0113] (2) Wax seal protection treatment.

[0114] Operation ①: Holding the tenon part of the turbine blade, slowly put the blade body part of the blade into the melted paraffin solution and let it stand for 20s to ensure that the paraffin is immersed in the inner cavity and hole of the blade 5 to be polished; The blade 5 is taken out and cooled in the air until the paraffin on the blade surface and the inner cavity solidifies.

[0115] Operation ①: Holding the tenon part of the blade 5 to be decorated, slowly put the blade body of the blade into the melted paraffin solution and let it stand for 15 seconds to ensure that the paraffin is immersed in the inner cavity and hole of the blade 5 to be decorated; Operation ②: Put the The finishing blade 5 is taken out and cooled in the air until the paraffin on the b...

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Abstract

The invention discloses a thermal barrier coating light decoration protection device and method for a turbine blade. The device comprises a pull rod, an intake side spoiler, a protection box and an exhaust side spoiler; the protection box has an opening structure, and the opening of the protection box is The bottom surface is provided with a through hole, one end of the pull rod is provided with a card slot, the card groove is used to fix the tenon of the blade to be polished, and the other end of the pull rod passes through the through hole on the bottom surface of the protective box to fix the tenon of the blade to be polished Inside the protective box; one side wall of the protective box is provided with an air intake side spoiler, which is used to protect the air intake edge of the blades to be polished; one side wall of the protective box is provided with an exhaust side spoiler for To protect the exhaust edge of the blades to be polished. First, the air film holes, top cover holes, and tail splitting slits of the turbine blades are blocked by using wax seals, and then the air inlet and exhaust sides are blocked by setting the intake side spoiler, the exhaust side spoiler and the protective box. Edges and tenon for gloss protection.

Description

technical field [0001] The invention belongs to the technical field of thermal barrier coatings of aero-engine turbine blades, in particular to a combined protection method used for damage-free finishing of the surfaces of thermal barrier coatings of turbine blades. Background technique [0002] At present, due to the advantages of electron beam physical vapor deposition (EB-PVD) technology, which has the advantages of easy and precise control of coating chemical composition, columnar crystal structure, and high bonding strength between coating and substrate, it has been widely used in a variety of high-temperature protective coatings for turbine blades. The high-temperature oxidation resistance, corrosion resistance and heat insulation performance of the turbine blades are significantly improved, and the working life of the engine is prolonged. [0003] Although the surface roughness of the thermal barrier coating coated by the EB-PVD technology is better than that of the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B19/16C23C14/58
CPCB24B19/16C23C14/5886Y02T50/60
Inventor 王玉锋吴博汪倡雷丹付前刚王军齐玮凤李进
Owner AECC AVIATION POWER CO LTD
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