Preparation method of composite thermal barrier coating of special-shaped thin-wall part and special-shaped thin-wall part

A technology of thermal barrier coating and thin-walled parts, which is applied in the field of materials, can solve the problems of high bonding strength and thermal shock resistance, irregular shapes of thin-walled parts, and difficulty in spraying uniformly, etc. Excellent thermal shock performance and heat insulation performance, and long service life

Pending Publication Date: 2022-04-29
BEIJING MINING & METALLURGICAL TECH GRP CO LTD +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Special-shaped thin-walled parts are irregular in shape, and it is difficult to spray evenly; when special-shaped parts are sprayed, the cooperation between the nozzle and the spraying surface makes it more difficult to spray uniformly, and it is difficult to obtain high bonding strength and thermal shock resistance.
During the processing of thin-walled parts, there is still the problem that conventional tooling is difficult to clamp

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of composite thermal barrier coating of special-shaped thin-wall part and special-shaped thin-wall part
  • Preparation method of composite thermal barrier coating of special-shaped thin-wall part and special-shaped thin-wall part
  • Preparation method of composite thermal barrier coating of special-shaped thin-wall part and special-shaped thin-wall part

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] A method for preparing a composite thermal barrier coating for special-shaped thin-walled parts, comprising:

[0044] Using the profiling tooling of the special-shaped thin-walled part to clamp the special-shaped thin-walled part;

[0045] Preset the relative motion trajectory of the spraying of the special-shaped thin-walled part and the spray gun, and after correcting the initial three-dimensional coordinates of the profiling tooling, the special-shaped thin-walled part and the spray gun, follow the unified relative motion trajectory of the spraying Control the movement of the profiling tool and the spray gun, and at the same time, the spray gun performs the spraying operation, forming a dense bonding layer and a ceramic coating on the surface of the special-shaped thin-walled part in sequence, and obtaining a special-shaped profile with a composite thermal barrier coating Thin-walled parts.

[0046] In an optional embodiment, the preset relative motion trajectory of...

Embodiment 1

[0073] This embodiment provides a method for preparing a thermal barrier coating for a special-shaped thin-walled part. The structure of the special-shaped thin-walled part is as follows figure 1 As shown, it specifically includes the following steps:

[0074] (1) NiCoCrAlY is used as the raw material of the dense bonding layer, and zirconia is used as the raw material of the ceramic coating, wherein the purity of zirconia is greater than 99.99%, and it is densely spherical, and the particle size is controlled at 15-45 μm.

[0075] (2) According to the shape of special-shaped thin-walled parts and the requirements of the surface to be sprayed, design a profiling tool that is suitable for setting the spraying trajectory and can effectively clamp the non-sprayed area of ​​special-shaped thin-walled parts. In this embodiment, the tapered surface fastening method is used. Spraying on special-shaped thin-walled parts for clamping;

[0076] (3) Firstly measure the length of each sp...

Embodiment 2

[0083] This embodiment provides a method for preparing a thermal barrier coating for a special-shaped thin-walled part. The structure of the special-shaped thin-walled part is as follows figure 2 As shown, it specifically includes the following steps:

[0084] (1) NiCoCrAlY is used as the raw material of the dense bonding layer, and gadolinium zirconate is used as the raw material of the ceramic coating, wherein the purity of gadolinium zirconate is greater than 99.9%, and it is densely spherical; the particle size is controlled at 15-45 μm.

[0085] (2) According to the shape of the special-shaped thin-walled parts and the requirements of the surface to be sprayed, design a profiling tool suitable for setting the spraying trajectory and effectively clamping the non-spraying area of ​​the special-shaped thin-walled parts for spraying on the special-shaped thin-walled parts ;

[0086] (3) Firstly measure the length of each special-shaped surface of the special-shaped thin-wal...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
porosityaaaaaaaaaa
porosityaaaaaaaaaa
Login to view more

Abstract

The invention provides a preparation method of a composite thermal barrier coating of a special-shaped thin-wall part and the special-shaped thin-wall part. The preparation method comprises the following steps: clamping the special-shaped thin-wall part by adopting a profiling tool of the special-shaped thin-wall part; the spraying relative movement track of the special-shaped thin-wall part and the spraying gun is preset, after the initial three-dimensional coordinates of the profiling tool, the special-shaped thin-wall part and the spraying gun are corrected, the profiling tool and the spraying gun are controlled to move according to the unified spraying relative movement track, and meanwhile the spraying gun executes spraying operation. And a compact bonding layer and a ceramic coating are sequentially formed on the surface of the special-shaped thin-wall part, and the special-shaped thin-wall part with the composite thermal barrier coating is obtained. The special-shaped thin-wall part composite thermal barrier coating prepared by the method is high in high-temperature service stability.

Description

technical field [0001] The present application relates to the field of materials, in particular to a method for preparing a composite thermal barrier coating for special-shaped thin-walled parts and special-shaped thin-walled parts. Background technique [0002] Ceramic thermal barrier coatings can effectively improve engine efficiency and operational safety. Ceramic-based thermal barrier coatings have the advantages of high temperature resistance, corrosion resistance and heat insulation. They are widely used in the mid-moving blades of aero-engines and ground gas turbines and the outer ring of high-pressure turbines. The application temperature can reach above 1300 ° C. It is currently used The highest temperature class of ceramic thermal barrier coatings. With the development of the aviation industry, higher demands are placed on the performance of ceramic thermal barrier coatings. The long-term service temperature of the ceramic thermal barrier coating is required to e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/11C23C4/073C23C4/129C23C4/134
CPCC23C4/11C23C4/073C23C4/129C23C4/134Y02T50/60
Inventor 张鑫卢晓亮颜正杜开平原慷郑兆然彭浩然
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap