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High-corrosion-resistance composite coating and preparation method thereof, and supersonic plasma spraying hole sealing treatment method

A composite coating and high corrosion resistance technology, which is applied in coating, metal material coating process, fusion spraying, etc., can solve the problems of not being fully mature, achieve remarkable corrosion resistance effect, high cost performance, and improved corrosion resistance effect Effect

Pending Publication Date: 2022-01-28
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the corrosion resistance of SAPS sprayed corrosion-resistant coatings applied to the hydraulic support columns of coal mining machines has not yet fully matured, and there are still many key application performances that need to be further improved and improved

Method used

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  • High-corrosion-resistance composite coating and preparation method thereof, and supersonic plasma spraying hole sealing treatment method
  • High-corrosion-resistance composite coating and preparation method thereof, and supersonic plasma spraying hole sealing treatment method
  • High-corrosion-resistance composite coating and preparation method thereof, and supersonic plasma spraying hole sealing treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1, a kind of high corrosion-resistant composite coating, its raw material is made up of ceramic powder and metal powder, and metal powder content is 30% of the powder quality of high corrosion-resistant composite coating, and ceramic powder is the powder quality of high corrosion-resistant composite coating 70% of that; the metal powder is a mixed powder of nickel and chromium, and the mass ratio of nickel powder and chromium powder is 1:1; the ceramic powder is chromium carbide powder;

[0041] The chromium carbide powder is a spherical powder with d50=25 μm;

[0042] The nickel powder is a spherical powder with d50=35 μm;

[0043] The chromium powder is spherical powder with d50=25 μm.

[0044] The preparation method of a high-corrosion-resistant composite coating includes mixing chromium carbide powder, nickel powder, chromium powder and alcohol evenly, then ball milling and drying to obtain prefabricated powder, and the quality of alcohol is 2.5 times th...

Embodiment 2

[0065] Embodiment 2, a kind of high corrosion-resistant composite coating, its raw material is made up of ceramic powder and metal powder, and metal powder content is 20% of the powder mass of high corrosion-resistant composite coating, and ceramic powder is the powder quality of high corrosion-resistant composite coating 80%; the metal powder is nickel and chromium mixed powder, the mass ratio of nickel powder and chromium powder is 1:1; the ceramic powder is chromium carbide powder;

[0066] The chromium carbide powder is a spherical powder with d50=45 μm;

[0067] The nickel powder is a spherical powder with d50=15 μm;

[0068] The chromium powder is spherical powder with d50=15 μm.

[0069] The preparation method of a high-corrosion-resistant composite coating includes mixing chromium carbide powder, nickel powder, chromium powder and alcohol evenly, then ball milling and drying to obtain prefabricated powder, and the quality of the alcohol is the quality of the high-corr...

Embodiment 3

[0090] Embodiment 3, a kind of high corrosion-resistant composite coating, its raw material is made up of ceramic powder and metal powder, and metal powder content is 25% of the powder mass of high corrosion-resistant composite coating, and ceramic powder is the powder quality of high corrosion-resistant composite coating 75%; the metal powder is a mixed powder of nickel and chromium, and the mass ratio of nickel powder and chromium powder is 1:1; the ceramic powder is chromium carbide powder;

[0091] The chromium carbide powder is a spherical powder with d50=35 μm;

[0092] The nickel powder is a spherical powder with d50=20 μm;

[0093] The chromium powder is spherical powder with d50=20 μm.

[0094] The preparation method of a high-corrosion-resistant composite coating includes mixing chromium carbide powder, nickel powder, chromium powder and alcohol evenly, then ball milling and drying to obtain prefabricated powder, and the quality of the alcohol is the quality of the ...

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Abstract

The invention discloses a high-corrosion-resistance composite coating and a preparation method thereof, and a supersonic plasma spraying hole sealing treatment method. The raw materials of the high-corrosion-resistance composite coating are composed of ceramic powder and metal powder, wherein the metal powder is nickel and chromium mixed powder, and the ceramic powder is chromium carbide powder. The preparation method comprises the following steps: uniformly mixing chromium carbide powder, nickel powder, chromium powder and alcohol, carrying out ball milling treatment, drying to obtain prefabricated powder, sieving the prefabricated powder, granulating, and sieving again to obtain the high-corrosion-resistance composite coating material. The supersonic plasma spraying hole sealing treatment method of the high-corrosion-resistance composite coating comprises the following steps: sequentially carrying out oil removal and decontamination, sand blasting, alcohol ultrasonic cleaning, drying and preheating on the surface of a sample, carrying out thermal spraying preparation of the high-corrosion-resistance composite coating on the surface of the sample by adopting a supersonic plasma spraying method, carrying out hole sealing treatment by adopting a hole sealing agent, and baking to obtain a sample with the high-corrosion-resistant composite coating on the surface. According to the invention, the corrosion resistance of a hydraulic bracket stand column is improved by selecting better corrosion-resistant powder, optimizing process parameters and conducting later hole sealing treatment.

Description

technical field [0001] The invention belongs to the technical field of thermal spraying corrosion-resistant coating preparation, and in particular relates to a high-corrosion-resistant composite coating, its preparation and a supersonic plasma spraying sealing treatment method. Background technique [0002] In the field of comprehensive mechanized coal mining technology, the hydraulic support column controls the roof strata in the working area of ​​the working face by interacting with the surrounding rock, provides a safe working space for the working face, and plays a role in supporting the roof. However, the support columns and jacks of the underground working face of the coal mine have bulging, blistering, ring-shaped, flaky, band-like corrosion and pinhole-like dense corrosion spots after a short period of use, resulting in a large number of corrosion failures for the hydraulic support columns and jacks. And the performance is reduced, thereby seriously affecting its ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06B22F9/04B22F1/065B22F1/142C23C4/02C23C4/134C23C4/18
CPCC23C4/06B22F9/04C23C4/02C23C4/134C23C4/18B22F2009/043
Inventor 鲍崇高张冲马海强
Owner XI AN JIAOTONG UNIV
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