Introduction to the working principle of box furnace
This box-type electric furnace can heat materials to very high temperatures. For example, a carbon material graphitization electric furnace can heat materials to over 2500°C.https://www.vacfurnace.com/technology-frontiers/vacuum-tempering-process-of-steel/
The direct heating resistance furnace can be made into a vacuum resistance heating furnace or a protective gas resistance heating furnace. In powder metallurgy, it is often used for sintering tungsten, titanium, silver and other products.
When heating with direct heating box-type electric furnace, please pay attention to:https://www.vacfurnace.com/technology-frontiers/powder-metallurgy-stainless-steel-vacuum-sintering-process/
① In order to heat the material evenly, the conductive cross-section and conductivity of each part of the material are required to be consistent;
② Since the resistance of the material itself is quite small, in order to achieve the required electric heating power, the working current is quite large, so the contact between the power-transmitting electrode and the material should be good;https://www.vacfurnace.com/technology-frontiers/what-sets-vacuum-brazing-apart-from-the-rest/
In order to avoid arcing and burning of materials, the resistance of the power transmission bus should be small to reduce circuit losses;
③When supplying alternating current, the short network should be configured reasonably to avoid excessive inductance and low power factor.https://www.vacfurnace.com/technology-frontiers/process-of-preventing-deformation-and-cracking-of-mold-by-vacuum-heat-treatment/
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