Treatment method of coating with anti-corrosion function on iron-based surface

Abstract

The invention relates to the field of anticorrosive coatings, in particular to a treatment method of a coating with an anticorrosive function on an iron-based surface, which comprises the following steps: (1) polishing an iron-based alloy; (2) performing sand blasting treatment on the polished iron-based alloy; (3) cleaning the surface of the iron-based alloy subjected to sand blasting treatment,putting the iron-based alloy into a drying oven of 60-100 DEG C to be treated for 0.2-0.5 h, and spraying a first anti-corrosion coating on the surface of the iron-based alloy by using high velocity oxy-fuel while the iron-based alloy is hot; and (4) after the first anti-corrosion coating is completely dried, placing the iron-based alloy coated with the first anti-corrosion coating in a drying oven at the temperature of 60-100 DEG C to be treated again for 0.2-0.5 h, and then spraying a second anti-corrosion coating on the surface of the first anti-corrosion coating through hypersonic flame while the iron-based alloy is hot. The method solves the problem that an existing treatment method for spraying a single coating usually cannot meet the requirements for high strength, corrosion resistance, abrasion resistance and the like at the same time.

Description

technical field [0001] The invention relates to the field of anti-corrosion coatings, in particular to a coating treatment method with an anti-corrosion function on the iron-based surface. Background technique [0002] Among metal structural materials, iron-based alloy materials are more commonly used, with high density, good mechanical properties, and high strength and stiffness. The iron base also has the advantages of good dimensional stability, excellent thermal and electrical conductivity, and will not be easily deformed when cast into structural parts, so it is widely used in various aspects of the industrial field. However, the corrosion resistance of the iron base itself is poor, and it cannot meet the requirements of harsh environments, which limits its application. [0003] In the prior art, generally in order to achieve a series of functions, a certain coating is sprayed on the surface of the iron base, which can achieve the purpose of saving materials and energy...

AI Technical Summary

Problems solved by technology

However, this treatment method of spraying a single coating often cannot meet the requirements of high strength, corrosion resistance, wear resistance and other properties at the same time.

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