What are the main parameters of the intermediate frequency furnace?

Intermediate frequency furnace is a power supply device that converts 50HZ alternating current from power frequency to intermediate frequency (above 300HZ to 1000HZ). The three-phase alternating current at power frequency is rectified into direct current, and then the direct current is converted into an adjustable intermediate frequency current, which is supplied to the intermediate frequency alternating current flowing through the capacitor and the induction coil, so that high-density magnetic lines of force are generated in the induction coil, and the metal material contained in the induction coil is cut, and a large eddy current is generated in the metal material. Using the principle of electromagnetic induction to heat metals.

The working frequency of intermediate frequency induction furnace (hereinafter referred to as intermediate frequency furnace) is between 50 ~ 50 ~ 2000hz, which is widely used for smelting nonferrous metals and ferrous metals. Compared with other casting equipment, the medium frequency induction furnace has the advantages of high thermal efficiency, short melting time, less loss of alloy elements, wide melting materials, less environmental pollution, and accurate control of the temperature and composition of molten metal.

This eddy current also has some properties of intermediate frequency current, that is, the free electrons of the metal itself flow in the metal body with resistance to generate heat. Three-phase bridge full-control rectifier circuit is used to rectify alternating current into direct current. For example, if a metal cylinder is placed in an induction coil with alternating medium-frequency current, the temperature of the induction coil itself is already very low, but the surface of the cylinder is heated to redness or even melting, and this redness and melting speed can be achieved by adjusting the frequency and current. If the cylinder is placed in the center of the coil, the temperature around the cylinder is the same, and the cylinder will not be heated or melted.

5-ton medium frequency furnace parameters 5.0 tons /2500KW medium frequency induction melting furnace (steel shell) Main technical parameters: project unit data Remarks Electric furnace parameters Rated capacity t5.0 Maximum capacity of molten steel/molten iron t5.5 Working temperature of molten steel/molten iron℃ 1600 Maximum working temperature℃ 1750 furnace lining thickness mm 150 induction coil φ mm. Kloc-0/0 induction coil height mm65438 Intermediate frequency power supply output rated power KW3000 12 pulse wave double input rated input current A2280 DC voltage V 1200 DC current A 1500 conversion efficiency %96 startup success rate% 100 Maximum output voltage V/Kloc of Intermediate frequency power supply. Sound db≤75 Comprehensive parameter Melting rate (heated to 1600℃)T/h4.96 The time taken to melt a furnace is related to feeding. Melting power consumption (heated to 1600℃)KW.h/T is less than 530 cooling water circulation flow T/h80 cooling water system water supply pressure Mpa0.25-0.35 water inlet temperature 5-35℃.