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Turbine blade thermal barrier coating finishing protection device and method

A technology for thermal barrier coatings and turbine blades, applied in coatings, metal material coating processes, grinding/polishing equipment, etc., can solve the problem of broken abrasive particles, inability to clean effectively, and easy entry of abrasive particles into the inner cavity of turbine blades, etc. question

Active Publication Date: 2021-06-22
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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  • Turbine blade thermal barrier coating finishing protection device and method
  • Turbine blade thermal barrier coating finishing protection device and method
  • Turbine blade thermal barrier coating finishing 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: Hold the mortise of the blade 5 to be polished, and slowly put the 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 polished; Operation ②: Put the The polished blade 5 is taken out and cooled in the air until the paraffin wax on the surface and inner cavity of the blade is solidified.

[0073] Operation ①: Hold the mortise of the blade 5 to be polished, slowly put the 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 polished; Operation ②: Put the The polished blade 5 is taken out and cooled in the air...

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: Hold the mortise of the blade 5 to be polished, slowly put the 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 polished; Operation ②: Put the The polished blade 5 is taken out and cooled in the air until the paraffin wax on the surface and inner cavity of the blade is solidified.

[0094] Operation ①: Hold the mortise of the blade 5 to be polished, slowly put the body of the blade into the melted paraffin solution and let it stand for 8 seconds to ensure that the paraffin is immersed in the inner cavity and hole of the blade 5 to be polished; Operation ②: Put the The polished blade 5 is taken out and cooled in the air unti...

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: Hold the tenon of the turbine blade, slowly put the blade body 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 polished; Operation ②: Put the blade body to be polished The blade 5 is taken out and cooled in the air until the paraffin wax on the surface and inner cavity of the blade is solidified.

[0115] Operation ①: Hold the mortise of the blade 5 to be polished, slowly put the 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 polished; Operation ②: Put the The polished blade 5 is taken out and cooled in the air unti...

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Abstract

The invention discloses a turbine blade thermal barrier coating finishing protection device and a method. The turbine blade thermal barrier coating finishing protection device comprises a pull rod, an air inlet edge spoiler, a protection box and an exhaust edge spoiler; the protection box is of an open structure, a through hole is formed in the open bottom face of the protection box, a clamping groove is formed in one end of the pull rod and used for fixing a tenon of a blade to be finished, and the other end of the pull rod penetrates through the through hole in the bottom face of the protection box to fix the tenon of the blade to be finished into the protection box; the air inlet edge spoiler is arranged on one side wall of the protection box and used for protecting an air inlet edge of the blade to be finished; and the exhaust edge spoiler is arranged on one side wall of the protection box and used for protecting the exhaust edge of the blade to be finished. Firstly, wax seal is adopted to block an air film hole, a top cover hole and a tail crack of a turbine blade, and then the air inlet edge spoiler, the exhaust edge spoiler and the protection box are arranged to carry out finishing protection on the air inlet edge, the exhaust edge and the tenon.

Description

technical field [0001] The invention belongs to the technical field of thermal barrier coatings for turbine blades of aero-engines, in particular to a combined protection method for non-damaging light decoration on the surface of the thermal barrier coatings of turbine blades. Background technique [0002] At present, because the electron beam physical vapor deposition (EB-PVD) technology has the advantages of easy and precise control of the chemical composition of the coating, the columnar grain structure can be obtained, and the bonding strength between the coating and the substrate is high, it has been widely used in a variety of high-temperature protective coatings for turbine blades. The preparation and processing of the turbine blade significantly improved the high-temperature oxidation resistance, corrosion resistance, and heat insulation performance of the turbine blade, prolonging the working life of the engine. [0003] Although the surface roughness of the thermal...

Claims

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Application Information

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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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