In the metal processing industry, from casting, forging, welding to cutting, grinding and other links, due to mechanical agitation, chemical reaction, liquid flow and other factors, a large number of foam is often produced. These foam not only affect processing efficiency and reduce product quality, but also may cause damage to equipment and increase production costs. Therefore, metal processing defoamers have emerged as a key additive to ensure smooth production.

Defoamer for metalworking is a chemical substance that can rapidly destroy the surface tension of liquid, and effectively inhibit and eliminate foam. They are widely used in metal processing media such as cooling fluids, lubricants, cleaning agents, and electroplating solutions to ensure the stability of the process and consistency of product quality.

The main components of defoamers include various types such as organosilicon, polyether, mineral oil, fatty acid salts, etc. Each component has its unique properties and applicable range. Organic silicon defoamer has excellent high temperature resistance, acid and alkali resistance, and long-lasting defoaming effect, especially suitable for metal processing in high temperature and high pressure environments. Polyether defoamer, with strong hydrophilicity, can quickly disperse and exert defoaming effect in water-based systems, and is widely used in water-based coolant and cleaning agents. Mineral oil defoamers are low-cost and suitable for cost sensitive processing scenarios, but attention should be paid to the potential pollution they may cause to the environment. Fatty acid salt defoamer has good biodegradability, environmental safety, and is suitable for application fields with high environmental requirements.