Metal pipe inner wall rust removal liquid and preparing method thereof

Abstract

Disclosed are a metal pipe inner wall rust removal liquid and a preparing method thereof. The metal pipe inner wall rust removal liquid mainly comprises 4-6 parts of carnauba wax, 8-14 parts of high potassium carbonate soap, 30-40 parts of tea, 50-60 parts of pig blood powder, 40-60 parts of corn starch, 60-70 parts of anti-rust oil, 90-110 parts of ethyl alcohol, 4-6 parts of quick lime, 4-6 parts of a 40% aqueous nitric acid solution, 9-11 parts of a passivation solution, 19-21 parts of potassium perfluorooctoate, 5-15 parts of a property-modifying additive, 6-10 parts of a polysiloxane organic silicone oil defoaming agent and 90-120 parts of a detergent. Preparation is convenient, the cost is low, no harm exists, water is saved, hands are not hurt, the washing process is safe and simple, the washing effect is good, the corrosion effect does not exist, affect on human sanitation and health is low, the metal pipe inner wall rust removal liquid is a natural rust removal agent by wiping and washing with water, preparing is simple and convenient, safe and non-toxic effects are achieved, and the good rust removal function for metal is achieved.

Description

Technical field: [0001] The invention relates to the field of metal pipe manufacturing, in particular to a metal pipe inner wall rust remover and a preparation method thereof. Background technique: [0002] 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 ...

AI Technical Summary

Problems solved by technology

[0002] 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, 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.

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