Arc metallization is one of the most advanced, prominent methods of metal and thermal spraying. It allows covering various materials and products with a thin layer of metal which acts as a protective coat for products in hostile environments. Arc metallization has been popularised in many branches of industry, serving as both practical and aesthetic method of finishing up workspaces and industrial buildings. How does the arc metallization method actually work and why there is the need to cover materials with an additional metal layer?
Arc metallization – the method
Arc metallization, also known as arc spraying has been known in the industry for a while now. As one of the various types of thermal spraying, arc metallization is basically a way of putting a thin layer of metal onto any given surface that needs protection from environmental and hostile factors. The source of power for arc metallization is an electric arc. A spray gun used for arc metallization is composed of two wires with a metal coating. A DC electric current makes the two wires touch together and release energy, which heats the wires, melts them and makes a stream of gas that disperses the molten metal onto the desired surface.
The process of arc metallization is an easy technique, which means that it requires minimal training from the workers. Moreover, arc metallization is a quick and effective technique, that can be done in short periods of time. Rightly applied coats of metal through arc metallization dry fast, are not very thick and most of all, last long. The biggest advantage of arc metallization is, undoubtedly, the size of an arc metallization spray gun. It allows you to work on specific areas, applying metal coats to complex or oddly shaped components, bent pipes and many more curved surfaces.
How and why do we use arc metallization?
The metal coat that is the result of arc metallization is not usually smooth, even finish, but it has its advantages. The porous coat is protective for any areas that might be damaged by external factors such as severe weather or the use of water on corroding metals. The additional layer of metal creates a safety blanket, making sure that the working surfaces won’t go out of use quickly.
Metallization is used for both aesthetic and practical purposes. The latter has been already established – many metals are prone to damage through external factors and environmental forces. An additional layer of metal helps to prevent leakage of pipes caused by corrosion and any other factors. Moreover, metallization makes things look better as the layers can easily fill any small gaps and unevenness that was on the surface before. There are two main types of coatings: finishing, which serves as anti-corrosion barrier and engineering, which are mainly for water resistance and thermal barrier.
Arc metallization is commonly used in pipeline production and industries dealing with oil, gas and other corrosion inducing substances. It is also common in marine industries and civil infrastructures such as bridges and overpasses, covering pipelines and containers and any sorts of metal elements. For further read please visit http://www.energop.com.