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New post-treatment process for abradable al/bn seal coating of gas turbine parts

A sealing coating and gas turbine technology, which is applied in the coating process of metal materials, components and coatings of pumping devices for elastic fluids, etc., can solve the problem of insufficient application range and the service temperature of Al/BN sealing coating Problems such as low range, wear-resistant Al/BN sealing coating and new post-treatment process can achieve the effect of reducing friction damage, reducing failure or scrapping, and reducing friction coefficient

Active Publication Date: 2022-06-03
成都中科翼能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low temperature range and insufficient application range of Al / BN sealing coating in the prior art, this solution provides a part for gas turbine and an abradable Al / BN sealing coating for gas turbine parts New post-treatment process

Method used

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  • New post-treatment process for abradable al/bn seal coating of gas turbine parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

Embodiment 2

[0042] The above spray powder pretreatment step can be divided into three sub-steps of taking, drying and sieving. Among them, take the step

[0043] The part surface treatment step is to clean and roughen the surface of the part to be sprayed. Part surface treatment steps

[0044] The preheating of the part is to place the part in an oven that can be heated to 60°C-90°C;

[0047] The heat treatment step is to heat treat the part to relieve coating stress. The heat treatment step is to place the part at 440°C‑

[0048] The machining step is to machine the part to bring the part to a set size. In the machining step, often

[0051] The step of sealing and packing the storage is to wipe off the friction reducing agent of the non-coating part on the part, and dry it for storage. In the package storage

Embodiment 3

[0056] The upper limit of the use temperature of the coating of the parts obtained by the above treatment process can be increased to 600°C. not only can

[0062] The cost of metal materials is 3,000 yuan × 10 pieces (scrapped at 30%) = 30,000 yuan; the cost of processing and coating materials is 10,000 yuan

[0066] Add items (2) to (3) and subtract item (1). It can be concluded that the cost saving for a single unit is: 353000+4800000‑

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Abstract

The invention belongs to the technical field of gas turbine engines, in particular to an abradable NiAl / BN or NiAlW / BN sealing coating (hereinafter referred to as abradable Al / BN sealing coating) post-treatment process for gas turbine engine parts , including steps such as oil immersion and finishing storage. The treatment process in this scheme can increase the service temperature limit of the abradable BN seal coating from 450°C to 600°C, increase the service temperature range of the seal coat and expand the range of parts that can be applied, which can improve The service life of key parts such as blades and friction pairs reduces the wear and tear of the coating; the service life of the parts is also increased from the original 300h to more than 900h; during the wear process of the sealing coating, there will be no damage to the coating material. Droplets and dust, so that other parts of the engine will not be corrosively polluted by droplets and dust under high-temperature use; the invention has huge economic value. According to calculations, the cost of the gas turbine engine after using this technology can be reduced by 989,350 Yuan.

Description

A new post-treatment process for abradable Al / BN sealing coatings for gas turbine parts technical field The invention belongs to gas turbine technical field, be specifically related to a kind of wearable Al / BN seal for gas turbine parts Strictly coat the new post-treatment process. Background technique Gas turbine engine is an internal combustion power machine that converts the energy of gas into useful work, and is widely used in Used in aerospace vehicles, ships and civil power generation, it has the advantages of good cleanliness, high efficiency, small volume and low weight, and is widely used. Widely used in power generation, independent energy systems, mechanical drives and other fields. Since its inception, the gas turbine engine has The advantages of high power, small size, quick start, stable operation and the use of various fuels have been widely recognized at home and abroad. At the same time, many scientific and technological workers at home and abroad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/02C23C4/06C23C4/08C23C4/134C23C4/18F01D11/00F01D11/12F04D29/08
CPCC23C4/02C23C4/06C23C4/08C23C4/134C23C4/18F04D29/083F01D11/00F01D11/122Y02T50/60
Inventor 周英杰赵芳亮方圆王海林王梁丞徐世辉蔡鹏杜静张尊礼方波王志君
Owner 成都中科翼能科技有限公司
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