Induction heating – The Process
Induction heating is one of the distinctive ways of directly heating an electric-powered metal part by circulating electric currents rather than a torch or open flame. Induction heating machines depend on the traits of radio frequency electricity transferring heat on the part via electromagnetic waves. There are numerous benefits for this procedure. The part doesn’t come into contact with any flame while there is zero chance of contamination on the product. The inductor inside the device doesn’t get hot. These machines work on the principle of Faraday’s Law. A solid state radio frequency energy supply passes alternating current by way of a copper coil inductor with the warmed up part. The inductor can serve as the main transformer while the heated metal thing is a second short circuit. The metal part that enters the magnetic field circulates eddy currents within the element. The flow of eddy currents yields localized heat without the need for touch made between the inductor & metal part.
Induction welding is used to soften, harden and conductive materials and bond metals. There is a multitude of inducting heating equipment that provide a mixture of consistency, control and velocity for manufacturing processes.
Things to Consider
The efficiency of induction heating machine s is determined by a few factors. Few factors includes the features of the aspect, inductor structure, electrical capacity of the electric power resource, and exact temperature necessary for the application program. One may make use of an electrically conducting object generally metals for induction welding. Plastics as well as other non conductive materials needs indirect heating by way of a conductive metal susceptor. Magnetic materials are easier to heat through this process since they’ve high permeability as compared to non magnetic materials.
Heat intensity, Power Supply and Inductor Design
Heating intensity is a vital element to take into account because around 85 % of the heating effect happens on the surface area of conductive materials.Heat severeness decreases with the expansion of distance from the surface. Frequencies of hundred to 400 kHz are ideal for smaller areas, while longer heating cycles at lower wavelengths are effective for strong, penetrating heat. The size of the induction power source is generally estimated by determining the volume of energy transfer required for the hard work piece. This depends upon specific heat of the material, its mass, and the necessary increase in temperature. The style of the inductor is a vital aspect considering that the varying magnetic field necessary for induction evolves within the inductor. The inductor supplies the precise heating pattern and also maximizes the effectiveness of the induction heating power cord.