The furnace is designed for metals with suitable melting temperature in a volume of 10 cm3. It is an electrical transformer, the secondary winding ends of which are closed with a conductive vessel in which melting occurs. Oven can be used for artistic casting, in jewelry, for casting billets, alloys.
For the manufacture of furnace required U-shaped electromagnetic core 1 (Fig.1), recruited from the plates of transformer steel with a cross-section of 100 cm2. The primary winding 2 consists of 80 turns of copper wire with a diameter of 4 mm. the Secondary winding 3 consists of one coil and made of copper plates by section 150×5 mm. because of the scarcity of plates of this size the secondary winding can be made of several parallel coils, using for their manufacture copper wire (large diameter wires from the cable tram trolley, etc.). The primary winding is fabricated on an insulating frame, which is performed after Assembly of the electromagnetic core. Each element 3 is attached to a secondary winding configuration, is shown in bold line, the dimensions of which are consistent with the cross section of the electromagnetic core, 4 metal bars, with the length of the crucible, followed by encompassing them sasayakana part of the magnetic circuit. The ends of the elements pulled together a massive metal bars, the heat capacity which prevents overheating of the secondary winding from the crucible. Metal bars 4 are attached to the furnace casing 5, made of angle iron, through the insulating strip.
The device of the crucible