Special treating agent for galvanizing surface chemical conversion and treating technique thereof

Abstract

The invention discloses a special treating agent for galvanizing surface chemical conversion and a treating technique thereof, belonging to the field of surface protection of transmission and transformer equipment components. The conversion treating method mainly comprises the steps of pretreatment, water washing, chemical conversion, water washing, natural drying and the like. The pretreatment agent is composed of Na2CO3, NaH2PO4, NaHPO4, sodium pyrophosphate, copper salt, nickel salt and titanium salt. In the treatment process, the conversion agent is composed of H3PO4 and ZnO, the corrosion inhibitor is one or both of thiocarbamide and hexamethylenetetramine, the complexing agent is composed of one or more of citric acid, tartaric acid and monobutyric acid, the surfactant is composed of one or more of OS-15, OP-10 and sodium dodecyl benzene sulfonate, and the accelerator is composed of one or more of sodium nitrate, sodium nitrate, hydrogen peroxide, potassium permanganate and potassium chlorate. The galvanizing substrate surface treated by the technique is a compact corrosion-resistant film with insulation resistance. The treating agent and treating technique can effectively enhance the corrosion resistance of the material and enhance the corrosion resistance and service life of the transmission and transformer equipment metal components.

Description

technical field [0001] The invention belongs to the technical field of corrosion protection, and in particular relates to a chemical conversion treatment agent for galvanized components of power transmission and transformation equipment and a treatment process thereof, in particular to a special treatment agent for chemical conversion of galvanized surfaces and a treatment process thereof. Background technique [0002] Steel is the most widely used metal in industry and daily life. However, steel is a metal that is easily corroded, and people generally use galvanizing to improve the ability to resist atmospheric corrosion. This kind of galvanized steel is the most widely used in industry and daily life. With the rapid development of my country's economy, the demand for electricity continues to increase, especially the continuous application of UHV technology, and the long-distance transmission of electricity plays an increasingly important role. function, using a large amoun...

AI Technical Summary

Problems solved by technology

These methods have their own shortcomings, such as poor corrosion resistance of molybdate passivation film, better corrosion resistance of titanium salt and silicate conversion film, but the conversion solution solution is unstable, and can not achieve the purpose of long-term anticorrosion

Generally, this kind of process often faces problems such as high cost and difficulty in large-scale construction. Therefore, it is urgent to find a new chemical conversion treatment technology with low protection cost, convenient construction and good protection effect.