It is a scientific device used to heat material especially metals to a very high temperature as well as carry out processes like brazing, heat treatment, etc. The product to be heated is surrounded by a vacuum. The absence of air prevents the transfer of heat from the product and removes source of contamination. Whereas other heating applications involve the hardening of steel or metals, vacuum furnace is ideal for brazing applications. It joins metal based components by melting the layer of metal in it. It is electrically operated at a temperature of 230 Volts, AC, single phase, 50 Hz supply. Besides, some ovens come with digital controllers along with thermocouple sensor for better temperature accuracy.