How Clad Metals Are Made
A metal that has been combined with a layer of a different type of metal is referred to as a clad metal. Two metals are usually combined so as to get a single type of metal that has better characteristics. In most cases, metals of desirable characteristics only are compressed into a single metal. Such a clad metal boasts of better characteristics like lower porosity, better formability, and higher resistance to corrosion. Cladding of metals is possible through several procedures like bonding, rolling, pressing, diffusion, and extrusion.
Clad metals are classified according to the types of materials used to form them and the bonding process as well. These different types of clad metals include inlay clad and overlay clad. Inlay clad metals are achieved by bonding precious metals like silver, gold, or platinum with cheaper metals like copper, brass, or stainless steel. It is important to note that when bonding the cheaper and precious metals together, the precious metal can be positioned where needed.Inlay clad metals are denser, harder, and more resistant to wear. Optimum bond integrity is achieved through these characteristics.
Overlay clads are those that are bonded through high pressure or heat and a metallurgical technique is used. It is important to note that overlay clads can be subdivided into a single clad with two layers, double clad with three layers, and overlay clads with seven layers. Another important fact about overlay clads is that they can be customized to match the requirements of specific industries.
Both overlay and inlay clad metals possess different forms. The factors determining the form a clad metal will have include clad sheet, clad wire, clad plate, clad rod, and clad tube. The form of the clad metals in turn dictate the cladding process, such as co-rolling, diffusion bonding, casting, co-extrusion, heavy electroplating, and heavy chemical deposition.
There are certain advantages associated with clad metals.
Clad metals enhance the appearance of some metals. Better resistance to corrosion and wear is the second advantage of using clad metals. The good electrical and thermal properties into them makes them better metals. Clad metals are also used in industrial functions. Clad metals add high value in industrial applications. These industrial applications range from chemical processing, petroleum refining, aluminum smelting, shipbuilding, cryogenic processing, power generation, to metal production.
For you to enjoy these benefits of clad metals, it is important that you regularly check whether there are any cracks in the weld joints. The fact that clad metals are exposed to corrosion makes it necessary for the regular special inspections. The second precaution you must adhere to is preventing any absence of fusions, incomplete penetrations, and undercuts in the clad metals.