The winding pvd coating machine uses surface technology to develop new strip steel materials, mainly relying on technological innovation. Surface technology will be the innovation focus of future iron and steel enterprise products and the future competitiveness of enterprises. The development of a new generation of continuous strip steel coating technology and products will be the best way to respond to market demand and improve the competitiveness of enterprises. The industrialization of new surface processes and products will likely have a revolutionary impact on the production processes of steel companies and upstream and downstream industries. 

       The contradiction between market demand and the limitations of the existing process is difficult to achieve through the optimization and transformation of traditional production lines. The increasingly strict environmental protection standards also require iron and steel enterprises to find new and environmentally friendly surface treatment and coating technologies. In this regard, the current iron and steel industry Professionals generally believe that the most promising and characteristic technology research and development direction is the coiling vacuum coating machine strip steel coating technology. The pvd coating (including physical vapor deposition and chemical vapor deposition, etc.) of the winding pvd coating machine is to convert the material to be coated into a gaseous state by various means to form a thin film coating on the surface of the strip. In theory, all metals, non-metals, and organics can form coatings in this way. This technology can be optimally combined to form a multi-process, highly flexible composite coating process to meet various performance requirements.
       Compared with traditional electrolytic plating and hot-dip plating, the main features of coiled pvd coating machine strip steel coating vacuum coating are:
      (1) The film forming temperature is low. The temperature of hot-dip galvanizing coating in the steel industry is generally 400 ° C ~ 500 ° C, and the temperature of chemical coating is higher than 1000 ° C. Such a high temperature can easily cause deformation and deterioration of the plated parts, while the temperature of vacuum coating is low, which can be lowered to room temperature, avoiding the drawbacks of conventional coating processes.
      (2) The degree of freedom of evaporation source selection is large. There are many coating materials to choose from without being limited by the melting point of the material. It can be coated with a wide variety of metal nitride films, metal oxide films, metal carbides and various composite films.
      (3) No harmful gas or liquid is used, which has no adverse effect on the environment. This is extremely valuable under the current general trend of increasing emphasis on environmental protection.
      (4) The quality of the strip steel coating is good. A uniform, smooth and extremely thin coating can be obtained with high coating purity, good corrosion resistance and adhesion. There are no problems such as leakage spots, zinc waves, and spangles in hot-dip galvanizing.
      (5) The process is flexible, and it is convenient to change the variety. Can be plated on single side, double side and single layer, multi layer and mixed layer. Coating thickness is easy to control.
       In a word, the coiling pvd coating machine strip coating is a high-tech integrating metallurgy, vacuum, chemistry, physics and other disciplines. The advantages of multi-function, multi-variety and high quality are the research and development direction of new strip steel materials with great potential.