Bamboo charcoal rust removal liquid

Abstract

The invention discloses a bamboo charcoal rust removal liquid which comprises the following components in parts by weight: 100 parts of water, 50-55 parts of bamboo charcoal, 30-40 parts of citric acid and 2-5 parts of oxalic acid. The bamboo charcoal rust removal liquid provided by the invention applies the bamboo charcoal material which has a porous structure, has a favorable rust removal function for metal under the combined action of citric acid and the like, especially has an excellent rust removal effect on ferrous metal, an d meanwhile doesn't damage the mechanical property and the like of metal.

Description

technical field [0001] The invention relates to a rust removing liquid. Background technique [0002] Ferrous metal (steel) 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. 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, the acid can react with the base metal to release hydrogen, hydrogen It can exert pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process. [0004] However, the traditional acid solution treatment method also has obvious defects: that is, the generation of a large amount of hydrogen during the treatment process will cause hydrogen embritt...

AI Technical Summary

Problems solved by technology

[0004] However, the traditional acid solution treatment method also has obvious defects: that is, the generation of a large amount of hydrogen during the treatment process will cause hydrogen embrittlement of the steel, 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, affecting The health of the operator and the surrounding equipment and environment are corroded; the consumption of acid is also large, which increases the cost of treatment; this type of acid will cause over-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.