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A kind of preparation method of high silicon and high niobium coating

A high niobium and coating technology, applied in the direction of coating and metal material coating technology, can solve the problems of unstable process parameters, single surface treatment method, and the comprehensive performance of the coating can not meet the complex service conditions. The effect of good macroscopic appearance, reduction of overheating sensitivity and temper brittleness, and enhancement of oxidation resistance and slag-forming ability

Active Publication Date: 2020-05-15
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the study of patents and papers related to surface processing methods, it is found that the current surface processing methods are single and the process parameters are unstable, and the comprehensive performance of the obtained coating cannot meet the occasions with complex service conditions.

Method used

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  • A kind of preparation method of high silicon and high niobium coating
  • A kind of preparation method of high silicon and high niobium coating
  • A kind of preparation method of high silicon and high niobium coating

Examples

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Effect test

Embodiment 1

[0026] A method for preparing a high-silicon and high-niobium coating on the surface of 45 steel, specifically comprising the following steps:

[0027] (1) Grind 45 steel with metallographic sandpaper to remove the surface oxide film, soak the polished 45 steel in 4% NaOH aqueous solution for 10 minutes, then rinse with water and put it in absolute ethanol for ultrasonication Clean to remove remaining oil and impurities on the surface; after cleaning, dry at 60°C for 1 hour;

[0028] (2) Using Fe powder, Ti powder, Si powder, B powder, and Nb powder with a purity of 99.99% as raw materials, according to the mass percentage of 48%:10%:17%:7%:18%, through ball milling Method Mix Fe powder, Ti powder, Si powder, B powder, and Nb powder evenly to obtain cladding powder. The parameters of ball milling are ball milling speed 45r / min, ball-to-material ratio 15:1, and ball milling time 3h. The average particle size after ball milling is 200 mesh, and the size of 45 steel base materia...

Embodiment 2

[0032] A method for preparing a high-silicon and high-niobium coating on the surface of 45 steel, specifically comprising the following steps:

[0033] (1) Grind 45 steel with metallographic sandpaper to remove the surface oxide film, soak the polished 45 steel in 5% NaOH aqueous solution for 8 minutes, then rinse with water and put it in absolute ethanol for ultrasonication Clean to remove remaining oil and impurities on the surface; after cleaning, dry at 70°C for 0.7h;

[0034] (2) Using Fe powder, Ti powder, Si powder, B powder, and Nb powder with a purity of 99.97% as raw materials, according to the mass percentage of 54%:4%:12%:10%:20%, through ball milling Method Mix Fe powder, Ti powder, Si powder, B powder, and Nb powder evenly to obtain cladding powder. The parameters of ball milling are ball milling speed 50r / min, ball-to-material ratio 17:1, and ball milling time 3h. The average particle size after ball milling is 250 mesh, and the size of 45 steel base material i...

Embodiment 3

[0038] A method for preparing a high-silicon and high-niobium coating on the surface of 45 steel, specifically comprising the following steps:

[0039] (1) Grind 45 steel with metallographic sandpaper to remove the surface oxide film, soak the polished 45 steel in 6% NaOH aqueous solution for 5 minutes, then rinse with water and put it in absolute ethanol for ultrasonication Clean to remove remaining oil and impurities on the surface; after cleaning, dry at 80°C for 0.5h;

[0040] (2) Using Fe powder, Ti powder, Si powder, B powder, and Nb powder with a purity of 99.95% as raw materials, according to the mass percentage of 51%:7%:14%:12%:16%, through ball milling Method Mix Fe powder, Ti powder, Si powder, B powder, and Nb powder evenly to obtain cladding powder. The parameters of ball milling are ball milling speed 60r / min, ball-to-material ratio 20:1, and ball milling time 2.5h. The average particle size after ball milling is 300 mesh, and the size of 45 steel base material...

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Abstract

The invention discloses a manufacturing method of a high-silicon high-niobium coating. The manufacturing method comprises the following steps of steel alloy surface pretreatment, cladding powder preparation and ball milling, powder presetting and laser sintering. The cladding powder comprises the following components of, by mass, 48-54% of Fe, 4-10% of Ti, 12-17% of Si, 7-12% of B and 16-20% of Nb. The performance test result shows that the oxidation resistance of the steel alloy in a high-temperature environment can be effectively improved, and a high-hardness and high-wear-resistance coatingsurface is obtained.

Description

technical field [0001] The invention belongs to the technical field of alloy surface coating modification, and in particular relates to a method for preparing a high-silicon and high-niobium coating on the surface of a steel alloy by laser cladding. Background technique [0002] The research on laser cladding technology has a history of about 30 years. Although there are many related theoretical and experimental studies, this technology has not been widely used in actual industrial production. The development of special alloys related to laser cladding is more are getting more and more attention. Through the study of patents and papers related to surface processing methods, it is found that the current surface processing methods are single and the process parameters are unstable, and the comprehensive performance of the obtained coating cannot meet the occasions with complex service conditions. Contents of the invention [0003] Aiming at the shortcomings of the prior art...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
CPCC23C24/106
Inventor 刘洪喜郝轩弘张璐璐赵艳爽刘子峰
Owner KUNMING UNIV OF SCI & TECH
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