(1) The film forming temperature is low. The temperature of hot-dip galvanizing in the iron and steel industry is generally 400℃～500℃, and the temperature of chemical coating is even more than 1000℃. Such a high temperature can easily cause deformation and deterioration of the plated parts, while the temperature of the vacuum coating is low and can be reduced to room temperature, avoiding the disadvantages of the conventional coating process.
(2) The choice of evaporation source is free. There are many coating materials to choose from without being limited by the melting point of the material. Many types of metal nitride films, metal oxide films, metal carbides and various composite films can be plated.
(3) Do not use harmful gases and liquids, and have no adverse effects on the environment. This is extremely valuable in the current general trend of paying more and more attention to environmental protection.
(4) The quality of strip steel coating is good. A uniform, smooth and extremely thin coating can be obtained, with high purity, good corrosion resistance and adhesion. There are no problems such as missing points, zinc waves, and spangles in hot-dip galvanizing.
(5) The process is flexible and it is convenient to change the variety. It can be plated on one side, two sides, single layer, multiple layers and mixed layers. The coating thickness is easy to control.
In short, vacuum coating machine strip steel vacuum coating is a high-tech integrating metallurgy, vacuum, chemistry, physics and other disciplines. Its products have high added value, not only the strength and cheapness of strip steel, but also the advantages of after coating. The advantages of multi-function, multi-variety, and high-quality are the research and development direction of new strip steel materials with great potential.
