How to Operate an Induction Furnace? Furnace Inspection 1. Check for cold cracks in the furnace body. Cracks below 2 mm are not used for repair. Cracks exceeding two milli-meters must be repaired. 2. Pay special attention to horizontal cracks because horizontal cracks are difficult to bridge when starting the furnace. 1.3 Frequently check the melting loss of the furnace body, and the inspection method must be accurate. Cold Furnace Open Heating curve; 200-300 degrees per hour in the beginning; when the temperature reaches 900-1000 degrees; work according to the normal operating process. Hot Furnace Shutdown After pouring the molten iron, clean up the slag, put in the molten iron block, heat it until the molten block is red, cover the furnace cover, and let the furnace body cool down slowly. Remember not to use compressed air to cool the furnace body rapidly. Operation Matters 1. Pay attention to prevent mechanical damage to the furnace mouth when adding the charge. 2. The slag in the