Neutral degreaser

In the phosphating process, neutral degreaser is a pretreatment step used to clean metal parts of any oil, grease, and other organic contaminants. This type of degreaser is typically used in spray iron phosphating baths. The degreasing and cleaning power of metals in spray systems is greater than in immersion systems.The spray bath provides the advantage of saving time and money in the long run. The downside is that the initial investment cost is high. Neutral degreaser is composed of pH neutral chemicals, which include:

-Non-ionic or amphoteric surfactants: These substances reduce the surface tension between oils and water, thereby enabling better cleaning of oil and grease.

-Organic solvents: These substances help dissolve and separate grease.

-Corrosion inhibitors: They are used to prevent corrosion of the surface of the part during the degreasing process.

Advantages

-Less corrosive: Compared to alkaline degreasers, it is less damaging to the metal surface and less corrosive. This is especially important for sensitive metals such as aluminum.

-Environmentally friendly: Generally, it is less harmful to the environment because it does not use strong alkaline substances.

Disadvantages

-Less performance on heavy grease and oils: May be less effective than alkaline degreasers in removing more stubborn dirt.

-May require more thorough pre-cleaning: Due to lower cleaning power, a better pre-cleaning (such as water and pressure washing) is required before neutral degreasing.

In general, the choice of degreaser depends on the type of metal, the type of contamination, and other factors. If a more gentle cleaning with less damage to the metal surface is required, a neutral degreaser is suitable.