Preparation process for composite wear-resistant coating

Abstract

The invention discloses a preparation process for a composite wear-resistant coating which can be used for repairing and reconstructing all local defects, caused by conveying fluid materials, of associated metal parts. The preparation process comprises the following steps: by taking a processed metal surface as a base and taking a molded metal or nonmetal structure frame as an insert, painting a high polymer composite material layer on the scene to form an integer, wherein the high polymer composite material layer consists of three coatings with different properties, which are respectively a composite material bottom layer, a wear-resistant corrosion-resistant functional layer and a surface coating. The preparation process disclosed by the invention adopts a coating process, is not limited by a shape of a mould, is widely suitable for various complex mould surfaces and relatively low in total cost, and can be used for flexibly designing out composite wear-resistant coating structures of various shapes for different working conditions.

Description

technical field [0001] The invention relates to a preparation process of a composite wear-resistant coating, which is especially used for repairing and rebuilding all local defects of related metal parts caused by conveying fluid materials. Background technique [0002] In complex working conditions, fluid equipment is subject to multiple factors such as erosion, wear, corrosion, and cavitation for a long time. The metal parts of equipment components are prone to loss, which affects work efficiency, fluid delivery flow decreases, and parts are replaced frequently. The cost of inspection and maintenance will be reduced, and if it is serious, it will cause partial perforation of parts, induce safety accidents or abnormal shutdown accidents, and cause heavy losses. The existing equipment inspection and maintenance technology is mostly to replace damaged parts, or surfacing damaged parts of parts, or repair welding steel plates to fill damaged parts, or to fill ceramic chips. ...

AI Technical Summary

Problems solved by technology

[0002] In complex working conditions, fluid equipment is subject to multiple factors such as erosion, wear, corrosion, and cavitation for a long time. The metal parts of equipment components are prone to loss, which affects work efficiency, fluid delivery flow decreases, and parts are replaced frequently. Overhaul and maintenance costs, or cause local perforation of parts, induce safety accidents or abnormal downtime accidents, and cause heavy losses

The existing equipment inspection and maintenance technology is mostly to replace damaged parts, or surfacing damaged parts of parts, or repair welding steel plates to fill damaged parts, or to fill ceramic chips. The traditional methods of these machines are often costly and long-term. , seriously shorten the life of the equipment, and it is difficult to fill the defects of complex shapes, with unavoidable defects such as unstable wear-resistant structure; there are also polymer materials used to fill the damaged parts, but the casting molding process not only increases the cost of the mold , and it is not suitable for repairing metal parts of various complex shapes. At the same time, the adhesion of polymer materials on the metal surface is poor, and the structural strength of polymer materials is not enough. After forming, the wear-resistant layer has peeling, cracking, and bubbling. and other defects, the use effect is unstable

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