Intermediate Frequency Induction Heating Furnace is a power supply device that converts 50HZ AC power into an intermediate frequency (above 300HZ to 20K HZ).

The intermediate frequency induction heating furnace converts the three-phase power frequency alternating current into direct current after rectification, and then converts the direct current into an adjustable intermediate frequency current, and supplies the intermediate frequency alternating current flowing through the capacitor and the induction coil to produce high density in the induction coil The magnetic lines of force and cut the metal material contained in the induction coil, which produces a large eddy current in the metal material. This kind of eddy current also has some properties of intermediate frequency current, that is, the free electrons of the metal itself flow in the resistive metal body to generate heat. For example, a metal cylinder is placed in an induction coil with alternating intermediate frequency current. The metal cylinder is not in direct contact with the induction coil. The temperature of the energized coil itself is already very low, but the surface of the cylinder is heated to redness or even melting. , And the speed of redness and melting can be achieved only by adjusting the frequency and the strength of the current. If the cylinder is placed in the center of the coil, then the temperature around the cylinder is the same, and the heating and melting of the cylinder will not produce harmful gas or bright light to pollute the environment. Intermediate frequency induction heating furnaces are widely used in the smelting of non-ferrous metals, mainly used for smelting steel, alloy steel, special steel, cast iron and other ferrous metal materials, as well as stainless steel, zinc and other non-ferrous metal materials. It can also be used for copper, aluminum and other non-ferrous metals. It can be used for smelting, heating, heat preservation, and dual operation with the blast furnace. Forging heating is used for diathermy, supplementary heating of bar, round steel, square steel, steel plate, on-line heating and partial heating of blue quenching, and on-line forging of metal materials (such as precision forging of gears, semi-shaft connecting rods, bearings, etc.), Extrusion, hot rolling, heating before shearing, spray heating, thermal assembly, and tempering, annealing, and tempering of the overall metal material. Heat treatment is mainly for shafts (straight shafts, reducing shafts, camshafts, crankshafts, gear shafts, etc.); gears; sleeves, rings, disks; machine tool screws; guides; planes; ball heads; hardware tools and other machinery (Automobiles, motorcycles) surface heat treatment of parts and overall quenching and tempering, annealing and tempering of metal materials.

Since the principle of intermediate frequency induction heating is electromagnetic induction, the heat is generated in the workpiece itself. Ordinary workers can perform continuous forging tasks 10 minutes after working with the intermediate frequency induction heating furnace, without the need for professional furnace firing workers to burn and seal the furnace in advance jobs. Due to the fast heating speed of this heating method, there is less oxidation. The oxidation burning loss of intermediate frequency heating forgings is only 0.5%, the oxidation burning loss of gas furnace heating is 2%, and that of coal-fired furnaces is 3%. The intermediate frequency heating process saves materials. Compared with coal-fired furnaces, a ton of forgings can save at least 20-50 kg of steel raw materials.