Water-based metal cleaning agent

Abstract

The invention provides a water-based metal cleaning agent. The water-based metal cleaning agent comprises 70 g / L-100 g / L of glycollic acid, 10 g / L-18 g / L of malic acid, 5 g / L-10 g / L of sodium dodecyl benzene sulfonate, 5 g / L-8 g / L of sodium citrate, 6 g / L-10 g / L of sodium metasilicate pentahydrate, 0.8 g / L-1.6 g / L of peregal O-15 and 2.2 g / L-2.4 g / L of fatty alcohol-polyoxyethylene ether AEO-9. The water-based metal cleaning agent can achieve synchronous performing of oil removing and rust removing of the metal surface in the same acid solution under the heating-free normal-temperature state, raw materials are saved, the processing speed is high, and the cleaning effect is good.

Description

technical field [0001] The invention relates to a cleaning agent, in particular to a water-based metal cleaning agent. Background technique [0002] Since the quality of metal surface pretreatment directly affects the bonding force between coating or coating materials and metal base materials and the integrity of the coating, we have very strict requirements for metal surface pretreatment technology. The metal surface after painting or pre-plating treatment should meet the following requirements: 1) No oil on the surface; 2) No excess residual foreign matter; 3) No rust and oxide film; 4) The surface reaches a certain degree of roughness; 5) The surface is dry, moisture-free, and dust-free; 6) The metal matrix is ​​exposed and activated. [0003] At present, the metal pretreatment technology at home and abroad usually adopts alkaline degreasing, including chemical alkali cleaning and electrolytic alkaline cleaning, and then neutralizes the alkaline residue with a weak acid ...

AI Technical Summary

Problems solved by technology

In the pickling process, due to the strong volatility of the pickling liquid, even if the production environment is ventilated by opening windows and using a strong exhaust device, the effect is very small. A large amount of acid mist is volatilized, which seriously affects the safety of other equipment in the workshop. The service life of equipment increases continuously, and at the same time, it poses a serious threat to the health of operating workers.

[0004] With the continuous development of metal pretreatment technology, water-based metal surface cleaners that can remove oil and rust simultaneously have appeared in recent years. Although they can remove oil and rust simultaneously in the same solution, due to the formula and The defect in the specific gravity of each component leads to the consumption of a large amount of cleaning agent during metal surface treatment, and the final cleaning effect is not ideal, and the processing speed is relatively too slow