Compatibility optimization design method for coating of small complex profile part

A technology for complex profile and optimized design, applied in design optimization/simulation, computer-aided design, calculation, etc., can solve the problems of large spraying radius and inability to realize complex profile material compatibility point-by-point deposition, etc. The method is simple and easy Promote and improve the effect of anti-erosion performance

Active Publication Date: 2021-05-07
SHANDONG UNIV
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Problems solved by technology

[0004] The inventors found that, unlike point-adding technologies such as 3D printing and laser cladding, thermal spraying is an area-adding technology with a large spraying radius, which makes it impossible to achieve point-by-point deposition of material compatibility at various positions on complex profiles
Therefore, for small complex-shaped parts, tangential functionally graded coatings can significantly improve the erosion resistance in theory, but in practice it is impossible to prepare tangentially functionally graded coatings on small surfaces

Method used

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  • Compatibility optimization design method for coating of small complex profile part

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Embodiment 1

[0061]Take a certain type of small complex surface blade (the matrix material is FV520B) in a high temperature environment, and the air solid two-phase flow erosion is worn, and the metal ceramic CR is prepared on the surface.3C2-Nicr coating (with "NiCr" in the composite coating, the quality of the composite coating, specifically includes the following steps:

[0062]Step 1: The technical solution described in the design method of the complex facer-cutting member cutting gradient heat spray coating coating is obtained by the technical solution described in the surface of the complex facework member and the impact angle of the erosion particle, acquisition impact angle The relationship with the leaf polar coordinates α = g (θ).

[0063]Where θ is the variable of the blade position, α is an impact angle.

[0064]Step 2: According to the service conditions, the coating needs to have anti-erosion wear and high temperature resistance, select the metal ceramic coating Cr.3C2-NICR.

[0065]Step 3: Th...

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Abstract

The invention relates to a compatibility optimization design method for coating of a small complex profile part, and belongs to the technical field of thermal spraying. Under the guidance of a design method of the tangential functional gradient coating, independent constraints of the compounding ratio of each position of the tangential functional gradient coating are integrated into comprehensive constraints of the compounding ratio of the whole complex profile of the homogeneous coating, a corresponding evaluation model is established, material compatibility optimization is performed from the theoretical method level, the material compatibility of the traditional homogeneous coating is optimized, and the material compatibility of the homogeneous coating is improved. The overall erosion resistance of the coating is improved, and the problem that the surfaces of small complex parts are scrapped too early due to serious local erosion abrasion is solved. The invention develops a new application of the tangential functional gradient coating design method in homogeneous coating compatibility optimization design, and the erosion resistance of the coating is effectively improved.

Description

Technical field[0001]The present invention belongs to the field of thermal spraying techniques, and specifically, it is specifically related to a small complex surface component coating.Background technique[0002]The information disclosed in the background is only intended to increase the understanding of the overall background of the present invention, and is not necessarily considered to recognize or imply that the information is intended to be a prior art known to those of ordinary skill in the art.[0003]The fan blade is widely used in the fields of petrochemical, metallurgy and natural gas transport, and it is affected by gas-solid two-phase flow impact in service, which is easy to generate erosion damage. Using thermal spraying techniques to prepare a brittle metal ceramic coating is one of the important means of enhancing surface resistance. For complex surface components, the impact angles in their locations are large, and the brittle materials, the anti-erosion performance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/20G06F111/04G06F119/18
CPCG06F30/17G06F30/20G06F2111/04G06F2119/18
Inventor 李方义鹿海洋李燕乐李剑峰杜际雨戚小霞杨宝娟
Owner SHANDONG UNIV
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