Macromolecular composite repairing material for circulating water pump and repairing method of macromolecular composite repairing material

Abstract

The invention discloses a macromolecular composite repairing material for a circulating water pump. The macromolecular composite repairing material comprises the following raw materials: 1 part of a bottom coating mixture and 1 part of a wear-resistant hydrophobic ceramic coating. The bottom coating mixture comprises 3 parts of an A-component repairing material and 1 part of a B-component repairing material; and the A-component repairing material comprises the following main components: 70% of epoxy modified resin, 10% of silicon carbide, 3% of alumina powder, 2% of rutile titanium dioxide, 10% of ceramic particles, 2.5% of zinc-aluminum powder, 0.5% of a plasticizer KH550, 1% of 300-mesh zirconia and 1% of ultrafine graphite powder. The macromolecular composite repairing material has the beneficial effects that after being in contact with oxygen, zinc and aluminum chemically react with oxygen to generate metal oxide, namely aluminum oxide; and the generated oxide forms a metal passivation film to effectively delay the chemical corrosion of metal, and the bottom coating appears and plays a role after an upper coating is subjected to sacrificial wearing.

Description

technical field [0001] The invention relates to the field of mechanical technology, in particular to a polymer repair composite material for circulating water pumps and a repair method thereof. Background technique [0002] The water pump is mainly used for the transportation of various fluids and the cooling of equipment in the circulation system. Its energy consumption accounts for 20% of the electricity consumption of the entire production plant. The safety and reliability of power equipment is related to the normal operation of the entire production. At present, after a certain number of years of normal use of the water pump, due to electrochemical corrosion, oxidation-reduction reactions occur on the corroded metal electrodes, and small hole corrosion, crevice corrosion, and intergranular corrosion occur, and the water pump cavity and impeller will wear to varying degrees, which will accelerate the damage of the equipment and the service life of the equipment. Shortenin...

AI Technical Summary

Problems solved by technology

At present, the circulating water pump is mainly made of cast steel. The impeller is made of cast steel and stainless steel, and various corrosions will occur after more than 3 years of use. There is no good solution to extend the service life of the equipment.

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