A broad range of different industries make use of plating, and there are different types of plating depending on what the purpose is. A plating is essentially a hard shell created around something either to protect it from abrasion or corrosion and sometimes for a better cosmetic appearance. This article takes a closer look at though at two types, cadmium plating and hermetic connector plating.
Cadmium is a metal found in the crust of the Earth and at its purest is a silver-white color that is soft. However, it is rare to see it in this form. Its application in thin layers to other materials like other metals, plastics, and even paper offers them protection. Example of its use is on different springs and clips, ranging up to more significant machine parts. Cadmium plating can give not just corrosion and galvanic resistance, and it can also offer some sacrificial protection to certain metals.
There are several ways of carrying out the plating. Three of them are electroplating, mechanical plating, and vacuum deposition.
- Electroplating – The most commonly used method of plating is this, and it is also known as electrodeposition. A container is filled with a cadmium solution, and a cadmium anode is then inserted into the container. An electrical current creates a reaction so that the cadmium deposits onto the object to create the plating layer.
- Mechanical plating – A drum tumbles articles inside that has been loaded with chemicals, glass beads, and cadmium powder. It is a method used more for smaller items, and it is only possible to plate this way on items tumbling does not damage.
- Vacuum deposition – Another method used more on smaller articles; this is where a vacuum heat vaporizes the cadmium. Then by exposing the items being plated to that vapor the cadmium adheres to them creating a fragile coating.
Hermetic Connector Plating
A hermetic connector joins metal to glass or another advanced material to prevent any gas, air or liquid from entering when in even harsh environments. There are various types of hermetic connectors, depending on what they are being used on, some need to withstand high voltages, some extreme temperatures, some corrosion, some high pressure and some high currents for example. There are a variety of applications and fields that use them, from the defense sector to aerospace, medical devices to nuclear and many more.
Hermetic connectors are essential to the integrity of various systems and with hermetic connector plating you can set the requirements you have with the company you are having the work done at and have them plated to the specific features you need. Be sure to choose a company certified and experienced in handling such work. When applications include computers, satellites, and missiles to name but a few, you need to make sure you work with the best.