A plating type electrolytic derusting agent

Abstract

The invention provides a coating type electrolytic rust remover. The rust remover comprises a rust removal additive and boron sulfate, wherein the rust removal additive is prepared from the followingcomponents of molybdate, copper nitrate or copper sulfate, zinc phosphate, zinc dihydrogen phosphate, nickel nitrate and ferrous sulfate. According to the rust remover, rapid, thorough rust removal and cleaning effects can be achieved on rusty and rusting base materials, rust removal of a large amount of base materials can be carried out at the same time, the rust remover has a great promotion effect on the rust removal industrial development, and after the rust removal through the rust remover, a metal alloy coating is formed on the surface of the base material, so that the base material canbe protected from secondary erosion.

Description

technical field [0001] The invention relates to the technical field of rust removal, in particular to a coating type electrolytic rust remover. Background technique [0002] Materials such as ferrous metals and non-ferrous metals are prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal process of painting and bonding. Necessary economic loss. [0003] The first generation of rust remover is a strong acid, which can chemically react with rust and metal oxides to form soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, the acid can react with the base metal to release hydrogen. Hydrogen 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: a large amount of hydrogen gas in the process ...

AI Technical Summary

Problems solved by technology

[0002] Materials such as ferrous metals and non-ferrous metals are prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal process of painting and bonding. necessary economic loss

[0003] The first generation of rust remover is a strong acid, which can chemically react with rust and metal oxides to form soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, the acid can react with the base metal to release hydrogen. Hydrogen 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: a large amount of hydrogen gas in the process The generation of hydrogen embrittlement will cause the steel to produce 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 , increase the processing cost; this kind of acid will cause excessive corrosion of steel

In addition, the residues produced in large quantities need to be discharged frequently, which not only seriously corrodes industrial pipelines, but also pollutes the soil and the environment.

[0004] The second-generation rust remover is a chemical substance containing nitrogen and phosphorus. Although it can overcome the disadvantages of the first-generation rust remover, such as being harmful to the human body, producing acid mist, and corroding the substrate, it is easy to enter the water system and cause eutrophication.

Rust removers on the market can remove the rust level lower than A level, and there is no quick and thorough solution for the rust level of A level and above

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