6. Organic and inorganic coating technology
Organic coating technology mainly refers to the use of coatings (paints, paints, pigments, thinners) to give special surface protection, decoration and flame retardant, temperature indication and other functions.
Inorganic coating techniques are the formation of inorganic coatings or surface films on metal surfaces. The inorganic coating or surface film has a specific chemical composition, structure and morphology that impart new properties or functions to the substrate and coating system.
7. Chemical conversion
The metal parts are placed in a certain chemical solution medium to form a film of a passive compound on the surface to improve the surface properties of the material. The passive compound film commonly used in engineering mainly includes chromate passivation film, phosphate passivation film, oxalate passivation film, and bluing on the surface of steel parts. In addition, in engineering applications, surface roughness reduction processes (polishing, polishing, rolling, etc.) and surface coloring are often attributed to surface modification processes such as chemical conversion.
8. Metal Electrochemical Deposition Technology
Metal electrochemical deposition refers to the technique of electrochemically depositing one or more layers of metal plating, alloy plating or composite plating on the surface of metal parts, also known as electroplating technology. Electroplating methods can be used to prepare a variety of coatings with different functions on the surface of metal parts.
9. Anti-rust technology
The chemical or electrochemical changes that occur when a metal acts under an environmental medium is called metal corrosion, commonly known as rust or rust. Rust-proof metal is a technology that prevents corrosion of metals during manufacturing, handling, transportation, storage, and use.
10. Hot dip coating technology
Hot dip coating technology, also known as hot-dip coating, is a process for immersing metal-plated materials in other liquid metals or alloys with lower melting points to form coatings. The hot dip coating technique is characterized by the formation of an alloy layer between the base metal and the plated metal.