Neutral rust remover

Abstract

The invention relates to a neutral rust remover which is prepared from the following components in percentage by weight: 2 to 4 percent of hydroxy ethyl triphosphate, 2 to 3 percent of tartaric acid, 5 to 7 percent of citric acid, 3 to 5 percent of malic acid, 15 to 20 percent of trisodium phosphate, 0.3 to 0.5 percent of sodium gluconate, 2 percent of fatty alcohol-polyoxyethylene ether and 58.5 to 70.7 percent of deionized water. The neutral rust remover is a neutral rust remover consisting of organic acid, a dispersing agent, a complexing agent, a promoter and a corrosion inhibitor, can only react with metal surface rusts and scales on the surface, does not have any corrosion to various metal workpieces, cannot cause a hydrogen embritttlement phenomenon after being treated, can achieve a protection effect on a steel part within short time, has no volatilization property and pungent smell, does not contain any toxic substances and heavy metals as well as organic pollutants, and is harmless to a human body; the use amount of drugs is reduced, and the working environment of an operator is effectively improved; the neutral rust remover meets the European Union's WEEE & RoHS instruction requirement; stainless steel, PVC and other materials can be made into an accommodating container; and the selection range is wide.

Description

technical field [0001] The invention relates to a neutral rust remover. Background technique [0002] With the continuous development and updating of industrial technology, the demand for steel in all walks of life has increased rapidly, and at the same time steel products have also penetrated into our daily life. However, steel parts are easy to oxidize and rust in the air, which will affect production efficiency or make a large number of substrates directly scrapped in industrial production. In daily life, if it is light, it will cause rust spots on the surface of steel products, which will affect the aesthetics; if it is serious, it will cause internal corrosion of the product, resulting in a greatly reduced performance of the product's bearing capacity, thus posing a safety hazard. Traditional derusting agents have high acidity, over-corrosion, and the risk of "hydrogen embrittlement", and they are easy to pollute the air. After derusting, the workpiece needs to be clea...

AI Technical Summary

Problems solved by technology

However, steel parts are easy to oxidize and rust in the air, which will affect production efficiency or make a large number of substrates directly scrapped in industrial production

In daily life, it will cause rust spots on the surface of steel products, which will affect the aesthetics; if it is serious, it will cause internal corrosion of the product, resulting in a greatly reduced performance of the product's bearing capacity, thus posing a safety hazard

Traditional derusting agents have high acidity, over-corrosion, and the risk of "hydrogen embrittlement", and they are easy to pollute the air. After derusting, the workpiece needs to be cleaned many times, and sometimes it needs to be neutralized. It will re-rust within a few days or even a few hours, seriously affecting the adhesion of subsequent coatings, so that companies must waste a lot of manpower and financial resources on rust removal and anti-rust