Rust remover and preparing method thereof

Abstract

The invention provides a rust remover. The rust remover comprises raw materials including, by weight part, 5 to 10 parts of hydrochloric acid, 6 to 12 parts of citric acid, 1 to 3 parts of oxalic acid, 1 to 5 parts of glycolic acid, 3 to 8 parts of sodium gluconate, 4 to 8 parts of polyaspartic acid, 0.5 to 1.5 parts of oxidized starch, 10 to 20 parts of cetyl-trimethyl ammonium bromide, 1 to 5 parts of sodium tripolyphosphate, 2 to 6 parts of Turkey red oil, 4 to 10 parts of polyethylene glycol and 50 to 70 parts of deionized water. The invention further provides a preparing method of the rust remover. The rust remover can efficiently finish metal surface rust removal within short time, meanwhile, it is ensured that after rust removal, metal can be free of rusting for a long time, meanwhile, after rust removal, the metal surface is free of rust, and is smooth in surface, the metal surface treatment quality is improved, acid fog can be effectively restrained, waste liquid and waste slag discharge can be reduced, and environment is protected.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a rust remover and a preparation method thereof. Background technique [0002] Metal is easy to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal progress of painting, bonding and other processes. If it is not handled in time, it will cause scrapping of materials and unnecessary economic losses. [0003] Traditional chemical rust removal usually uses strong acid, which can chemically react with rust and metal oxides to generate soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, acid can react with base metal to release hydrogen, hydrogen It can generate pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process, but the traditional acid treatment method...

AI Technical Summary

Problems solved by technology

[0002] Metal is prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal progress of painting, bonding and other processes. If it is not handled in time, it will cause scrapping of materials and unnecessary economic losses

[0003] Traditional chemical rust removal usually uses strong acid, which can chemically react with rust and metal oxides to generate soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, acid can react with base metal to release hydrogen, hydrogen It can generate pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process, but the traditional acid treatment method also has obvious defects: that is, a large amount of hydrogen gas in the process The occurrence of hydrogen embrittlement will cause the steel to have hydrogen embrittlement, which will cause the mechanical properties of the metal to decline and affect the strength of the steel itself; at the same time, it is easy to form acid mist, which will affect the health of the operator and corrode the surrounding equipment and environment; the consumption of acid is also large. Increases disposal costs; these acids can over-corrode steel

In addition, a large amount of residue will be produced after acid treatment, which needs to be discharged frequently, which not only seriously corrodes industrial pipelines, but also pollutes the soil and the environment