Induction hardening is one of the most in demand services for hardening the surface of steel components for industrial purposes, by means of exposing materials to heat until it reaches above their transformation range. Once it reaches the desired temperature and length of exposure, metals are then immediately cooled down by quenching process or by simply exposing them to room temperature. This process have many advantages because as the metal is heated and then cooled down, its properties become stronger than before. The components and the physical properties of the material are not influenced by the treatment but it will be much harder and with higher carbon content.

The heat treatment process actually requires high electricity frequency. The alternating current passes through the coil which when generates very intense magnetic field that quickly changes its polarity in the space in between the coils. Steel alloys and metals are then placed into the magnetic fields, as the current generates heat the material then heats up rapidly. This results to highly durable metal alloy and are usually used for industrial application and automotive parts. These last for a very long time and can withstand wear and tear more efficiently than before.

There are actually two types of hardening process: the static hardening and the traverse hardening. The static hardening is a process wherein the material is placed within the coil and then held static. With this method the object subjected to hardening are hardened all over the entire surface. Though this is a great method, it also consumes too much energy. The traverse heat treatment on the other hand is the most commonly used worldwide for steering column and axle shafts for automotive parts. The heating is down using a ring type conductor that generates a band if heat that moves along the length of the object subjected to hardening. This only requires more time. In both manners, the quenching process is pretty much the same, except for their difference in power requirement.

Aside from induction treatment, there are also other heat treatments processes being used today such as carburizing, tempering, normalizing, ageing, annealing, case hardening and more. These are commonly used for cast iron, tool steel alloys and die steel materials.