Arc spraying

Arc spraying, also known as arc coating, is a surface coating process in which an electric arc is generated between two electrodes. This arc generates extreme temperatures that allow molten materials such as metals or alloys to be transformed into a liquid state. The molten particles are then sprayed onto the surface to be coated, where they cool quickly and form an adhesive coating.

The process of arc spraying begins with the feeding of molten material, typically in the form of wire or powder, into an arc gun. In this gun, the arc is generated between the electrode and the melting material. The extreme heat of the arc melts the material and sprays it onto the surface of the substrate in the form of tiny particles.

The advantages of arc spraying lie in the ability to apply a variety of materials to different surfaces, including metals, ceramics and polymers. The coating produced is usually very dense and has good adhesion, making it suitable for industrial applications such as corrosion protection of components or surface restoration.

This process is used in various industries, including aerospace, engineering and power generation. Arc spraying offers the ability to produce thinner or thicker coatings depending on requirements, allowing precise control of coating thickness. Nevertheless, the application of this process requires precise process control to ensure a homogeneous and high quality coating.