For industry, a coating is a type of covering. A metallic or non-metallic material coats the surface of an object. Finishers define a metal coating as material applied in a thin film to the surface of a substrate metal or other material. Metal coatings, to all involved parties, are an essential part of the manufacturing process. They serve a specific purpose in preparing a component to function within its designated environment.
The Purpose of a Metal Coating
A metal coating is a value enhancement. In other words, the application of the coating to the substrate surface improves its worth. In general, metal coatings increase the following properties:
* Appearance
* Chemical corrosion resistance
* Oxidation inhibiting
* Wear resistance
Manufacturers rely on metal coating as a means of increasing the functionality and longevity of their components. Two basic types of metal coatings are aluminum and zinc. These both provide effective coatings against the corrosive elements found in the atmosphere.
Selecting the Metal Coating
It is important to make certain the metal coating your company selects for application is compatible with the intended purpose of the component. Factors under consideration should be:
1. Thermal conditions
2. Mechanical conditions
3. Site and other environmental factors
All these will have some effect on the end use of the component. As a result, you need to factor them into any decision regarding the choice of the protective metal coating.
Fabricators realize corrosive environments are not usually restricted to a single caustic element. They need to consider the application of a metal coating that is resistant to the penetrating abilities of more than one active and corrosive material. This type of barrier is one that is resistant to what is called “broadband” corrosion.
Metal Coatings
Manufacturers and fabricators work together to improve the longevity and functionality of components subjected to harsh environmental stressors. While various means are available, many look for an affordable but reliable solution. Metal coatings are the perfect answer.
