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Synthetic reaction plasma cladding powder and preparation technique thereof

A technology of plasma cladding and synthesis reaction, which is applied in metal material coating process, coating and other directions to achieve the effect of high bonding strength, low carbonization temperature and high purity

Inactive Publication Date: 2008-09-03
WEIFANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a synthesis reaction for improving the quality of carbide metal reactive plasma cladding composite coatings for the separation of reactive plasma cladding powder components when preparing carbide composite coatings by reactive plasma cladding. Plasma cladding powder

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  • Synthetic reaction plasma cladding powder and preparation technique thereof
  • Synthetic reaction plasma cladding powder and preparation technique thereof
  • Synthetic reaction plasma cladding powder and preparation technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take chromium powder with a particle size of 2-3 μm, iron powder with a particle size of 6-9 μm, tungsten powder with a particle size of 0.5-1 μm, and nickel powder with a particle size of 2-3 μm in mass percentage: chromium powder 35%, iron powder 50%, Mix 4% tungsten powder and 6% nickel powder; put the mixed material and alcohol into the ball mill at a volume ratio of 1:1, the volume ratio of the steel balls to the mixed material is 3:1, and the ball milling time is 24 to 72 hours , to obtain a slurry with an average particle size of 4-7 μm; the ball-milled slurry is dried in a drying box, the drying temperature is controlled within the range of 45-70 ° C, and the drying time is 12-24 hours to obtain a powdery Material; put the sucrose whose quality is 15.39% of the total mass of the powdery material in a stainless steel container and heat it, and after the sucrose changes from a brittle solid to a viscous liquid, pour the dried powdery material into the sucrose, and ...

Embodiment 2

[0031]Take chromium powder with a particle size of 2-3 μm, iron powder with a particle size of 6-9 μm, tungsten powder with a particle size of 0.5-1 μm, and nickel powder with a particle size of 2-3 μm in mass percentage: chromium powder 30%, iron powder 54%, Mix 4% tungsten powder and 6% nickel powder; put the mixed material and alcohol into the ball mill at a volume ratio of 1.2:1, the volume ratio of the steel ball to the mixed material is 5:1, and the ball milling time is 24 to 72 hours , to obtain a slurry with an average particle size of 4-7 μm; the ball-milled slurry is dried in a drying box, the drying temperature is controlled within the range of 45-70 ° C, and the drying time is 12-24 hours to obtain a powdery Material; put the sucrose whose quality is 24% of the total mass of the powdered material in a stainless steel container and heat it, and after the sucrose is changed from a brittle solid to a viscous liquid, pour the dried powdered material into the sucrose, an...

Embodiment 3

[0033] Take chromium powder with a particle size of 2-3 μm, iron powder with a particle size of 6-9 μm, tungsten powder with a particle size of 0.5-1 μm, and nickel powder with a particle size of 2-3 μm by mass percentage: chromium powder 30%, iron powder 53%, Mix 1% tungsten powder and 12% nickel powder; put the mixed material and alcohol into the ball mill at a volume ratio of 1.3:1, the volume ratio of the steel ball to the mixed material is 4:1, and the ball milling time is 24 to 72 hours , to obtain a slurry with an average particle size of 4-7 μm; the ball-milled slurry is dried in a drying box, the drying temperature is controlled within the range of 45-70 ° C, and the drying time is 12-24 hours to obtain a powdery Material; put the sucrose whose quality is 14.81% of the total mass of the powdered material in a stainless steel container and heat it, and after the sucrose changes from a brittle solid to a viscous liquid, pour the dried powdered material into the sucrose, ...

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Abstract

The invention discloses a chromium-ferrum-carbon- tungsten-nickel synthetic reaction plasma cladding powder and the preparing process thereof. With sucrose as the precursor of carbon, by carbonizing under a specific temperature, a chromium-ferrum-carbon- tungsten-nickel plasma cladding composite power coated with carbon is formed. The process is as follows: mixing the raw materials powder(except the sucrose) in accordance with the granularity requirement in proportion, wet grinding, drying the mixed slump powder, carbonizing the mixture of the dried powder and the sucrose by step, and crushing and screening the carbonized block-like substance. The invention solves the problem that reaction components are separated in plasma cladding powder when preparing carbide metal composite coating by plasma cladding in current technology, besides, sucrose is the precursor of carbon, which has low carbonizing temperature, the produced carbon has high purity, the carbonizing process has low pollution, and the industrial feasibility is high.

Description

technical field [0001] The invention belongs to the powder-making process in the preparation technology of metal-ceramic composite coating, and particularly relates to the preparation of a reactive plasma cladding high-chromium iron-based metal-ceramic composite coating. Background technique [0002] Metal-ceramic composite coatings, especially metal-ceramic composite coatings with carbide as the reinforcing phase, are widely used in the manufacture and repair of wear-resistant components in the fields of aviation, aerospace, metallurgy, mining, petroleum and chemical industry. At present, the ceramic phase in the metal-ceramic composite coating with carbide as the reinforcing phase is usually prefabricated on the surface of the raw material by means of external compounding. The distribution of the ceramic phase in the coating is uneven, the particle size is relatively coarse, and the ceramic / metal bonding interface is easily polluted. , which will greatly affect the perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 刘均波
Owner WEIFANG UNIVERSITY
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