40Cr steel surface antirust agent and preparation method thereof

Abstract

The invention discloses a 40Cr steel surface antirust agent, which is composed of the following components in mass percentage: 10-14% of barium petroleum sulfonate, 4-7% of 80# microcrystalline wax, 59% of industrial castor oil, and water-based acrylic resin 11-14%, coal tar naphtha 3-4%, 96% concentrated hydrochloric acid 2-3%, cross-linked polyvinylpyrrolidone 1-3%, wetting agent 1-2%, defoamer 1-2%, the present invention Excellent material selection and scientific processing methods have solved the problem of steel surface corrosion in the past and are conducive to anti-rust operations. The invention uses industrial castor oil as the dispersion medium, which is environmentally friendly and pollution-free; it does not contain toluene, ethylbenzene, di Toluene, low VOC, no formaldehyde, heavy metal content lower than the national mandatory standard, no irritating smell, can prevent corrosion, cavitation and scaling on the steel surface, form a protective layer, prolong the time of rust on the steel surface, and exclude it from the formula Instead of chromic acid or dichromate, it is low in cost, non-toxic, has no adverse effect on the skin, and has excellent construction performance, and has significant environmental, economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of steel surface treatment agents, and in particular relates to a 40Cr steel surface rust inhibitor and a preparation method thereof. Background technique [0002] 40Cr steel is one of the most widely used steels in my country's machinery manufacturing industry. After quenching and tempering treatment, it has good comprehensive mechanical properties, good low-temperature impact toughness and low notch sensitivity, and is suitable for making molds. In order to improve the surface resistance of 40Cr steel Corrosion, anti-rust treatment needs to be carried out on the surface of 40Cr steel. At present, most of the anti-rust processes in my country are treated with chromic acid or dichromate solution. The raw materials contain hexavalent chromium and trivalent chromium, which are harmful to human health and the environment. Cause serious harm, various anti-rust agents developed for the above defects have unstable p...

AI Technical Summary

Problems solved by technology

[0002] 40Cr steel is one of the most widely used steels in my country's machinery manufacturing industry. After quenching and tempering treatment, it has good comprehensive mechanical properties, good low-temperature impact toughness and low notch sensitivity, and is suitable for making molds. In order to improve the surface resistance of 40Cr steel Corrosion, anti-rust treatment needs to be carried out on the surface of 40Cr steel. At present, most of the anti-rust processes in my country are treated with chromic acid or dichromate solution. The raw materials contain hexavalent chromium and trivalent chromium, which are harmful to human health and the environment. Cause serious harm, various anti-rust agents developed for the above defects have unstable quality, poor self-healing performance, and fail to meet customer needs