Method for preparing composite anticorrosive coating using self-propagating cladding technology

Abstract

The invention discloses a method for preparing a composite anticorrosive coating using a self-propagating cladding technology. The method comprises the following specific steps of (1) aluminizing a to-be-welded part of a steel plate to obtain an aluminized layer; (2) preparing a self-propagating flux from the following raw materials in parts by weight: 16.7-25.9 parts of Al, 55.1-70.3 parts of Cu2O, 10.2-14.8 parts of SnO2, 1.7-2.5 parts of Zn and 1.1-1.7 parts of CaF2, selecting corresponding powder as raw materials and mixing the raw materials evenly; (3) carrying out self-propagating cladding of the self-propagating flux prepared in step (2) on the surface of the aluminized layer prepared in step (1); and (4) preparing modified epoxy resin and spraying the blended modified epoxy resin on the surface of a self-propagating coating prepared in the step (3) to obtain the composite anticorrosive coating. According to the method, the procedures are reduced, the process is shortened, the technology is simple; and no energy needs to be provided for a self-propagating technology after an ignition starting process.

Description

technical field [0001] The invention belongs to the technical field of composite anticorrosion coatings, and in particular relates to a method for preparing composite anticorrosion coatings by using self-propagating cladding technology. Background technique [0002] With the continuous development of the national economy and basic construction, the requirements for anti-corrosion of national key projects and large-scale projects are getting higher and higher. Large-scale steel equipment, components, and pipelines put forward higher requirements for coatings, that is, coatings are required to have excellent corrosion resistance. Rust and corrosion resistance, but also must have good construction, adaptability and durability. However, the traditional epoxy anti-rust paint has high requirements on the surface treatment of steel structures. When the project that has already been in operation needs to be repaired and painted, a second high-quality rust removal treatment must be c...

AI Technical Summary

Problems solved by technology

However, the traditional epoxy anti-rust paint has high requirements on the surface treatment of steel structures. When the project that has already been in operation needs to be repaired and painted, a second high-quality rust removal treatment must be carried out, and it must be repaired and repaired every few years. Apply the paint once to prevent rust and corrosion of steel

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