The molecular formula and use of cleaning pre film agents may vary depending on the specific product, but generally speaking, cleaning pre film agents are chemicals used to clean and treat metal surfaces. The following are two common cleaning pre film agents and their uses:
Phosphate cleaning pre film agent:
Molecular formula: usually H3PO4 (phosphoric acid) or its mixture.
Purpose: Mainly used to remove oxides, dirt, and grease from metal surfaces, while forming a stable phosphate protective film on the metal surface to improve the corrosion resistance and coating adhesion of the metal. Commonly used for surface treatment of metal materials such as steel and aluminum.
Acid cleaning pre film agent (such as chromic acid, nitric acid, etc.):
Molecular formulas: such as CrO3 (chromic acid) and HNO3 (nitric acid).
Purpose: Used to remove oxides, dirt, and rust from metal surfaces, forming a clean metal surface. These acidic cleaning pre film agents are typically used for surface cleaning and preparation of stainless steel, aluminum alloys, and other metal materials for subsequent coating or electroplating processes.
It should be noted that when using cleaning pre film agents, safety operating procedures should be followed, and correct use and handling should be carried out according to the specific product manual or guidance provided by the supplier. Different types and formulations of cleaning pre film agents may be required for different metal materials and application fields. Therefore, before actual use, it is best to consult a professional or supplier to obtain accurate molecular formula and usage information.