How to keep the molten iron in the induction melting furnace warm

When the molten iron in the induction melting furnace is completely melted and the molten iron reaches the required temperature, reduce the power of the induction melting furnace to maintain the power at a small value. The temperature of the molten iron in the furnace will no longer rise or drop, so The function of heat preservation is realized. After the iron melts, reduce the power and give it a low-power insulation.