(1) Medium frequency induction furnace should use special rectifier transformer, improve the supply voltage, and limit the no-load operation of the transformer.
(2) standardise the installation, shorten the high voltage, transformer, intermediate frequency power supply, the furnace between the line, the use of higher purity T2 copper or oxygen-free copper, especially the induction coil and water-cooled cable, increase its cross-sectional area can effectively reduce the current heat loss.
(3) According to the casting process to choose the appropriate capacity and frequency of intermediate frequency furnace, increase the power density to improve melting efficiency, reduce additional losses.
(4) Priority to choose the steel shell furnace with furnace cover, to reduce the furnace wall and mouth heat loss and electromagnetic loss. Furnace shell connections in the operation process to prevent metal contact to form a short circuit.
(5) Develop a reasonable casting process, from moulding, material selection, melting, pouring, heat treatment, cleaning and other standardised process operations, scientific management, in order to reduce energy consumption.
(6) Strengthen equipment management and maintenance, reduce the failure rate, to ensure smooth production.
(7) often check whether the contact of the connecting parts of the conductive system is good, especially the water-cooled cable and induction coil connection screws are tight, insulated table, insulated boots must be inspected once a year
(8) In the melting process is strictly prohibited power cuts and water cuts, melting process should always pay attention to the water temperature and water pressure, so that the water pressure is maintained at 0.1 ~ 0.3MPa, the water temperature is maintained at 55 ° below.
(9) charging operation, cold wet charge should be dried first, can not be added directly into the melt, metal chippings in the first furnace use the best to avoid using, because the metal chippings can penetrate into the lining gap; the furnace chamber must be burned hot to 1000 ℃ or so before pouring into the molten iron, the heating of the furnace chamber can be added to the induction heating of the iron block.
(10) the charge freeze sealing time can not be too long, so as not to cause the furnace explosion accident; sintered lining, it is desirable to use 30 ~ 50% of the rated power, more than 5 consecutive work furnace.
