Low-friction-coefficient surfacing composite wear-resisting plate and fabrication process thereof

Abstract

The invention discloses a low-friction-coefficient surfacing composite wear-resisting plate and a fabrication process thereof. The low-friction-coefficient surfacing composite wear-resisting plate comprises a base material, a surfacing hard face layer and a graphite filling layer, wherein the base material is provided with the surfacing hard face layer, releasing cracks in the upper surface of thesurfacing hard face layer are filled with the graphite filling layer, the crack opening size of the releasing cracks is 0.3-1.0 mm, the graphite filling layer adopts graphite mixture liquid, and graphite particle control in the graphite mixture liquid is less than 50 mesh. By means of the above method, the low-friction-coefficient surfacing composite wear-resisting plate is simple in structure, the friction coefficient of the rough hard face layer before being ground to be smooth can be reduced, rapid wear of the wear-resisting plate at initial stage is further reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of composite wear-resistant plates, in particular to a low friction coefficient surfacing welded composite wear-resistant plate and a manufacturing process thereof. Background technique [0002] Common surfacing welding composite wear-resistant plates are mostly made of high-carbon and high-chromium alloy materials as the hard surface layer. After surfacing, the surface is rough and the friction is large. However, since the high-carbon and high-chromium hard surface material itself is extremely wear-resistant, the surface roughness and friction coefficient can only be reduced by grinding, which is very difficult to deal with. [0003] Due to the surfacing composite wear-resistant plate made of high-carbon and high-chromium alloy hard surface materials, due to the characteristics of the material process, stress release cracks will naturally occur, which helps to reduce welding stress residues, avoid welding l...

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Problems solved by technology

[0002] Common surfacing welding composite wear-resistant plates are mostly made of high-carbon and high-chromium alloy materials as the hard surface layer. After surfacing, the surface is rough and the friction is large. However, since the high-carbon and high-chromium hard surface material itself is extremely wear-resistant, it can only be reduced by grinding to reduce the surface roughness and friction coefficient, which is very difficult to deal with

[0003] Due to the surfacing composite wear-resistant plate made of high-carbon and high-chromium alloy hard surface materials, due to the characteristics of the material process, stress release cracks will naturally occur, which helps to reduce welding stress residues, avoid welding layer peeling, and crack openings that are too thin Graphite cannot be filled, too large crack opening means that the number of cracks in the hard surface layer is small, and the welding stress release is not enough, which may cause the residual stress to be too high, the hard surface layer is easy to peel off, and the number of cracks is small, and the graphite filled in is unevenly distributed. The lubrication effect is poor. Based on the above defects and deficiencies, it is necessary to improve the existing technology and design a low friction coefficient surfacing composite wear-resistant plate and its manufacturing process.

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