Derusting paste with polishing effect

Abstract

The invention provides derusting paste with a polishing effect. A boron sulphate derusting agent is mixed with a thickening agent and abrasive; and the mass ratio of the boron sulphate derusting agent, to the thickening agent and to the abrasive is 100: 0.1-1: 0.3-1.2. The strong derusting paste has a fast and simple derusting function on serious rust, and also has a passivating effect and an oxidization preventing function; the derusting effect is superior to a strong acid or nitrogen and phosphorus derusting agent, the derusting paste is green and environment-friendly and has no toxic and side effects on human bodies, and the brightness of a derusted base material can reach 8 K or above.

Description

technical field [0001] The invention relates to the technical field of rust removal, in particular to a rust removal paste with a polishing effect. 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 proce...

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.

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