2008-Jul-5 - Home Metal Casting Info Released
Home Metal Casting Furnaces Information and all about Home Foundry Furnace Types, and Home Foundry Casting Information at a new section on Metal Casting website that is all about DIY Casting Furnaces. The new Home Metal Casting section can be accessed by users and non-users by visiting the following web address:Home Metal Casting.
Here is an excerpt from the Home Metal Casting Furnaces section page on Metal Casting Zone:
“DIY Induction Furnace: Theoretically, only three things are required for implementing induction heating: High frequency Electrical Power Source, work coil for generating an alternating magnetic field, and a workpiece-electrically conducive. However, the practical approach is very complicated. For instance, the work coil and High Frequency source’ should have a matching network in between, to obtain better power transfer. Use of water cooling systems is very common in induction heaters of high power. This facilitates removal of waste heat from the matching circuit of the work coil and the coil itself. This process involves application of control electronics as well. Control Electronics, as the name suggests, controls the heating action’s intensity, thereby ensuring consistent results. It also provides protection against unpleasant operating conditions.
Usually, the incorporation of work coil takes place into a resonant tank circuit. There are innumerable advantages of this. The first advantage is that any one of the parameters, i.e. voltage or current is made sinusoidal. This causes fewer losses to inverter by the way of allowing it getting benefited from either zero-current-switching or zero-voltage-switching corresponding to the arrangement chosen. The visibility of sinusoidal waveform at work coil gives the proof of purity of signal. There also occurs less interference of radio frequency with the equipment in its vicinity. It’s up to the designer to choose one amongst several resonant schemes.”
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