Central air-conditioning aluminum fin workpiece acidic scale and rust cleaning agent, and production method thereof

Abstract

The invention discloses a central air-conditioning aluminum fin workpiece acidic scale and rust cleaning agent. The central air-conditioning aluminum fin workpiece acidic scale and rust cleaning agent comprises following raw materials, by mass, 10 to 20% of sulfuric acid, 5 to 10% of hydrofluoric acid, 3 to 6% of citric acid, 5 to 10% of abietic acid polyethylene glycol ester, 3 to 6% of AEO, 3 to 6% of a spray degreasing special-purpose low-foaming surfactant, 1 to 2% of penetrant JFC, 0.05 to 0.15% of an antifoaming agent, and the balance water, wherein mass concentration of sulfuric acid is 98%, and mass concentration of hydrofluoric acid is 50%. A production method comprises following steps: weighed water is delivered into a reaction vessel; a stirrer is turned on, and rotating speed is controlled to be 120r / min; sulfuric acid with a mass concentration of 98%, hydrofluoric acid with a mass concentration of 50%, citric acid, abietic acid polyethylene glycol ester, AEO, the spray degreasing special-purpose low-foaming surfactant, penetrant JFC, and the antifoaming agent are delivered into the reaction vessel successively and slowly; stirring is carried out until a transparent solution is obtained; and the transparent solution is collected and packaged.

Description

technical field [0001] The invention relates to a cleaning agent and a production method for cleaning an air conditioner, in particular to a cleaning agent that can remove dirt evenly and completely without causing strong corrosion of parts, saving time and effort, low cost, safe and reliable, and pollution-free. The invention discloses an acid scale and rust cleaning agent for aluminum fin workpieces of air conditioners and a production method thereof. Background technique [0002] Air conditioners are usually overhauled after they have been in operation for a period of time. For example, after a train runs 20,000 to 30,000 kilometers, it is necessary to overhaul the air conditioner. During the overhaul, it is necessary to thoroughly clean the dirt on the surface of the aluminum fins in the air conditioner to improve the heat exchange capacity of the aluminum fins, thereby improving the heating and cooling efficiency of the air conditioner. , to prolong the service life of...

AI Technical Summary

Problems solved by technology

[0004] ① Strong alkaline cleaning agent has a pungent smell when sprayed, which pollutes the environment of the operation site; ② Strong alkaline cleaning agent is extremely corrosive to human skin and easily burns the operator's skin; ③ Strong alkaline cleaning agent has a strong impact on paint The coating is highly corrosive, which often causes discoloration, peeling, and peeling of the paint; ④ It is impossible to evenly reach all parts of the aluminum fins when sprayed with a strong alkaline cleaning agent, so the cleaning is uneven and the appearance appears black and white Poor; ⑤ With the thickness of the aluminum fins, it is difficult to thoroughly clean the inside of the fine aluminum fins by spraying cleaning agents; ⑥ The corrosion of the aluminum fins by strong alkaline cleaning agents is obvious, and most of the aluminum fins are cleaned after four times All will become thinner and brittle and need to be updated; ⑦The shell and other parts of the air conditioner need to be cleaned with an acidic cleaning agent, which increases the complexity of the operation and is time-consuming and laborious

[0005] 2. The pickling method generally uses ultrasonic cleaning, and the cleaning effect is also different due to the different acidic additives used in the cleaning agent.

Some cleaning agents have a pungent smell, affecting the on-site operating environment; some produce acid mist, causing corrosion of workshop machinery and equipment; some are too corrosive, causing corrosion of aluminum fin workpieces and ultrasonic cleaning tanks