A CRITICAL REVIEW ON DIFFERENT COIL CONFIGURATIONS USED FOR INDUCTION HEATING SYSTEM

Induction heating system has a number of inherent benefits compared to traditional heating systems due to a non-contact heating process. The main interesting area of the induction heating process is the efficiency of the usage of energy, choice of the plate material and different coil configurations based on application. Correctly designed, manufactured and maintained induction coils are critical to the overall efficiency of induction heating solutions. The important investment in induction heating process is in highly qualified coil technicians and advanced coil design equipment and got benefit by having coils that are customized to their specific needs and conditions, The objective of the present work reviews different coil configurations used for the induction heating Process which is based on application such as surface hardening, Casting, Rolling, welding, Brazing, Bonding, Post Heating and Water Heating. Induction method of heating is wide spread used in numerous technological processes for hot forming, surface hardening, annealing, etc. It is extremely effective because of its contactless energy transfer, unlimited power densities and controlled temperature field in the work piece. However, high potential of induction heating can be fully realized on the basis of numerical simulation only. All technological processes used induction method of heating is multi physical. Heating by induction it includes electromagnetic and thermal physics, which are strongly coupled because of temperature dependent properties of the work piece material. Induction heating is a process which is used to bond, harden or soften metals or other conductive materials (5). For many modern manufacturing processes, induction heating offers an attractive combination of speed, consistency and control. Many industries have benefited from this new breakthrough by implementing induction heating for furnacing, quenching and welding.