Preparation technology for in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer on metal plate surface layer

A technology of in-situ synthesis of tungsten carbide particles, applied in the coating process of metal materials, coatings, etc., can solve the problems of easy occurrence of uniform transverse cracks, poor quality of the surface wear-resistant layer, and different alloy shrinkage ratios. The effect of batch industrial production, low production cost and high production efficiency

Inactive Publication Date: 2012-02-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

The disadvantage of this process is: due to the different shrinkage ratio of the alloy during the composite process, uniform transverse cracks are prone to appear, which is a significant disadvantage of surfacing composite wear-resistant steel plates
The disadvantage of this process is: due to the different shrinkage ratio of the alloy during the composite process, uniform transverse cracks are prone to appear, which is a significant disadvantage of surfacing composite wear-resistant steel plates
The equipment of laser surface cladding method is complicated, the investment is large, and the wear-resistant layer of laser surface cladding is too thin
The surface wear-resistant layer prepared by oxyacetylene spray welding method is of poor quality

Method used

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  • Preparation technology for in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer on metal plate surface layer
  • Preparation technology for in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer on metal plate surface layer

Examples

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Embodiment 1

[0020] Example 1: Production of tungsten carbide particle-reinforced steel-based surface layer composite metal sheet

[0021] In this example, micron-sized tungsten carbide (WC) particles are used to in-situ synthesize a hard reinforcing phase WC with high hardness and high elastic modulus in the metal matrix through the reaction between W element and C, thereby forming a high-strength and high-strength The ductile alloy steel is the matrix, and the WC particles / metal matrix composite bar is made of a certain volume fraction of WC particles as the wear-resistant hard phase. In this way, not only the toughness and plasticity of metal materials are maintained, but also the characteristics of high hardness reinforced materials are good in wear resistance, so the application prospect is very broad. Moreover, the size, distribution, quantity and thickness of the composite layer of the reinforcing particles WC can be effectively controlled by choosing a reasonable preparation proces...

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Abstract

The invention discloses a preparation technology for an in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer on a metal plate surface layer, which comprises the following steps of: carrying out surface rust removal to a metal plate which needs to be subjected to surface layer reinforcement; then, carrying out surface layer recarburization processing on the steel plate; coating metal tungsten powder on the surface of the steel plate; then, coating one layer of heat-insulation coating on the surface of the steel plate coated with the metal tungsten powder; quickly melting the steel plate surface layer by a high-frequency sensor; after the surface layer is solidified, removing the coating layer on the surface layer of the plate material; and finally, obtaining the in-situ synthesis tungsten carbide particle reinforced alloy steel plate material. The alloy steel plate material not only keeps the metal toughness and plastics characteristics of steel plate base material metal but also has higher abrasion resistance. The thickness of the WC (Wolfram Carbide) composite layer can be 1-2mm, and the hardness HRC (Rockwell hardness) is 56-60. The alloy steel plate material has the performances that the alloy steel plate material can deform and can be welded and the like, and the alloy steel plate material can be directly curled, deformed, cut and punched and can be processed by other machining links like the steel plate to be processed into various engineering components (such as pipelines and the like). The in-situ synthesis tungsten carbide particle reinforced composite wear-resisting layer has the advantages of low cost and the like and is easy to industrially produce on a large scale.

Description

technical field [0001] The invention relates to the preparation of a wear-resistant layer, in particular to a preparation process for in-situ synthesis of tungsten carbide particles on the surface of a metal plate to strengthen a composite wear-resistant layer. Background technique [0002] Wear-resistant steel plate refers to a special plate product specially designed for use under large-area wear conditions. Wear-resistant steel plates are widely used in metallurgy, cement, mining, electric power and other industries. Examples of applications in the metallurgical industry are: chutes, fans, weighing hoppers, classifier blades, slide plates, slag removal pipes, blast furnace top hoppers, pump casings, crusher components, truck cargo tank linings, blast furnace fan inlets Plate, slag wear plate, sintering machine high temperature mineral material chute, etc. The applications in the cement industry include: scraper plates, slides, wind guide cones, guide vanes, dust removal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 王发展
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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