An aluminium-alloy pipe descaling treating fluid

Abstract

An aluminium-alloy pipe descaling treating fluid is disclosed. The descaling treating fluid is prepared by mixing raw materials by weight at room temperature as follows: 37.8-68.9% of water, 0.5-1% of citric acid, 1-2% of anhydrous sodium carbonate, 5-10% of triethanolamine, 5-10% of polyoxyethylene alkyl ether, 3-6% of alkylphenol polyoxyethylene, 0.6-1.2% of hexamine, 1-2% of nitric acid, 8-16% of tartaric acid, 2-4% of trisodium phosphate and 3-6% of ethanol, with the balance being hydrofluoric acid. The descaling treating fluid has characteristics of simple operation, no need of heating, good cleaning effects, no corrosion to surfaces of aluminium-alloy pipes, capability of maintaining glossiness, capability of being repeatedly used, no harm to skin when contacting skin, low carbon, and capability of protecting the environment and saving the cost.

Description

Technical field [0001] The invention relates to the technical field of chemical cleaning, in particular to a descaling treatment liquid suitable for aluminum alloy tubes. Background technique [0002] At present, in order to remove the dirt of aluminum alloy pipes, the traditional cleaning agent formula is to mix nitric acid, hydrofluoric acid, hydrochloric acid and water at a mass percentage of 5:4:3:8 and then heat to 90℃-95℃. The aluminum alloy can be cleaned by soaking for 4-4.5 hours, and only 40-45 tons of aluminum alloy tubes can be cleaned in 8 hours. The efficiency is not high, and the acid mist generated by nitric acid, hydrofluoric acid and hydrochloric acid after heating has great effects on the human body. Harm, seriously pollute the air, and the discharge of waste acid water also seriously pollutes water resources. Summary of the invention [0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provid...

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Problems solved by technology

[0002] At present, in order to remove the dirt on aluminum alloy pipes, the traditional cleaning agent formula is to mix nitric acid, hydrofluoric acid, hydrochloric acid and water at a mass percentage of 5:4:3:8 and then heat it to 90°C-95°C. The aluminum alloy can be cleaned after soaking for 4-4.5 hours, and only 40-45 tons of aluminum alloy pipes can be cleaned in 8 hours, which is not efficient, and because nitric acid, hydrofluoric acid and hydrochloric acid are heated to produce acid mist, it has great harm to the human body. Harmful, seriously pollutes the air, and the discharge of waste acid water also seriously pollutes water resources

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