What are the problems with energy saving in medium frequency induction furnaces? A. Selection of different capacities and frequencies. B. Matching of rated power. C. The influence of the purity and carrying area of ​​the induction coil and water cable on power consumption. D. The influence of scale and how to deal with it. E. excerpt …

3.2 Control of S and N3.2.1 Control of w(S)There is no S source for smelting cast iron in medium frequency furnace, and the w(S) content of molten iron is low. Therefore, it has great advantages for producing ductile iron, but for gray cast iron, low S and high Mn will increase casting stress, greatly increase excerpt …

Overview:SCR intermediate frequency power supply device, referred to as SCR intermediate frequency device, is a power supply device that uses the switching characteristics of SCR to convert 50Hz power frequency current into intermediate frequency current. It is mainly used in induction melting, induction heating, induction quenching and other fields. widely used in.Its advantages are:

1) Fault phenomenon: Frequent burnout of the thyristor original, after replacement, burned out Analysis: Refer to fault E) for additional introductions as follows: a. When the thyristor is turned off in reverse, the instantaneous glitch voltage subjected to the reverse voltage is too high, and the RC absorption is checked. b. The load is reduced excerpt …

The basic working principle of the thyristor intermediate frequency power supply is to rectify the 50 Hz industrial frequency AC current into DC through a three-phase bridge rectifier circuit. Circuit diagra: