Main performance of strip steel vacuum coating
Different from the traditional steel industry's expansion model at the expense of resource consumption and environmental load, the development of new strip steel products by changing the surface properties can simultaneously meet the comprehensive requirements of environmental protection, cost reduction, resource saving and performance improvement, and, Its development potential is theoretically unlimited, because the surface control has a large degree of freedom, which can meet the various and flexible needs of users. The development of new strip steel materials with surface technology mainly relies on technological innovation.
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Surface technology will be the focus of future steel enterprise product innovation 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 technologies and products may 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 existing processes is difficult to achieve through the optimization and transformation of traditional production lines. Increasingly stringent environmental protection standards also require steel companies to find new environmentally friendly surface treatment and coating technologies. In this regard, the current steel industry Professionals generally believe that the most promising and characteristic technology R&D direction is vacuum coating technology.
Vacuum coating (including physical vapor deposition and chemical vapor deposition, etc.) is to convert the material to be plated into a gaseous state by various means to form a thin film coating on the surface of the steel strip. In theory, all metals, non-metals, and organics can form coatings in this way.
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This technology can be optimized to form a multi-process, highly flexible composite coating process to meet various performance requirements. Therefore, the research and development and implementation of this new technology will be the best strategy for steel companies to face the challenges of surface technology and products.
It is foreseeable that with the development of vacuum technology and material technology and the urgent requirements of the steel industry for the development of new types of steel, strip steel vacuum coating will surely become an important process technology for strip steel surface treatment and has a good development prospect. It provides an important means for the development of new strip steel materials.
Compared with traditional electrolytic plating and hot-dip plating, the main features of vacuum coating are:
(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 parts to be plated, while the temperature of the vacuum coating is low and can be reduced to room temperature, avoiding the disadvantages of the conventional coating process.
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(2) The choice of evaporation source is free. There are many coating materials to choose from, regardless of the melting point of the material. In addition to the common zinc, aluminum, and tin in hot-dip galvanizing, almost all metal materials can be vapor deposited, and many types of metal nitride films and metal oxide films can also be deposited And metal carbides and various composite membranes.
This provides a lot of freedom for the development of new strip steel materials.
(3) Do not use harmful gases and liquids, and have no adverse effects on the environment. This is extremely valuable under the current trend of increasing emphasis on 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 plating points, zinc waves, and spangles in hot-dip galvanizing.
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(5) The process is flexible and it is convenient to change the variety. It can be plated on single side, double side, single layer, multi-layer and mixed layer. The coating thickness is easy to control.
By determining the coating time, the thickness of the coating can be precisely controlled, thereby avoiding the problems of difficult thickness control and zinc waves that are common in hot-dip galvanizing.
In short, strip 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 multi-function after coating. The advantages of multi-variety and high-quality are the research and development direction of new strip steel materials with great potential.
Founded in 2015,Zunhua Baorui Titanium Equipment Co.,Ltd. is a manufacturer specializing in pvd vacuum ion coating equipment. The company’s products mainly include large plate coating machine, large tube collating machine, tool coating machine and LOW-E glass production line. Mr.Wang baijiang ,general manager of the company ,has been engaged in vacuum coating industry for more than 30 years. He continuously improve production technology, improve product performance and devote himself to provide customers with better product experience and higher production efficiency.