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　　For Medium-frequency electric furnace In the event of a sudden accident, it is essential to remain calm, stay composed, and handle the situation correctly to prevent the accident from escalating and to minimize its impact. Therefore, we should be familiar with the types of accidents that may occur in induction furnaces and the proper methods for dealing with them.

　　1. Medium-Frequency Electric Furnace Power and Water Outage Incident

　　Power outages in electric furnaces are caused by faults such as overcurrent or ground faults in the power supply network, or by malfunctions within the induction furnace itself. When the control circuit and the main circuit are connected to the same power source, the pump in the control circuit will also stop operating. If the power outage can be restored within a short period—specifically, if the outage duration does not exceed 10 minutes—there is no need to activate the backup power source; simply wait for the power to resume. However, at this point, we should already be prepared to switch the backup power source into operation. If sensors experience a prolonged power outage, the power supply can be immediately reconnected. Medium-frequency electric furnace.

　　If Medium-frequency electric furnace If the power outage lasts longer than 10 minutes, it will be necessary to connect to a backup water source. Due to the power failure, the coil stops receiving water supply, and the molten metal generates significant heat. If there is no water for an extended period, the water inside the coil could turn into steam, which would damage the coil's cooling system and cause the rubber hoses connected to the coil as well as the coil's insulation to burn out. Therefore, in the event of a prolonged power outage, the sensor can be switched over to industrial water or the gasoline engine can be started to pump water. Since the furnace is in a power-off state, the water flow through the coil may be only one-quarter or one-third of what it would be during powered-up melting operations.

　　When the power outage lasts less than one hour, cover the molten iron surface with charcoal to prevent heat loss and wait for power to be restored. Generally, no other measures are necessary, and the temperature drop of the molten iron will be very limited. For a 6-ton holding furnace, after a one-hour power outage, the temperature drops by only 50℃.

　　If the power outage lasts longer than one hour, the molten iron may solidify in a small-capacity furnace. While the molten iron is still fluid, switch the hydraulic pump to the backup power source or use a manual backup pump to pour out the molten iron. If the remaining molten iron has begun to solidify, try your best to break up the crusty layer on its surface and drill holes into its interior to allow gases to escape when it is remelted, thus preventing gas expansion from causing an explosion.

　　If the power outage lasts longer than one hour, the molten iron will completely solidify and its temperature will drop. Even if power is restored and the iron is melted again, excessive current may occur, potentially preventing the iron from being re-melted and re-energized. It is therefore essential to estimate and assess the duration of the power outage as soon as possible. If the outage is expected to last more than one hour, the cast iron should be poured promptly before the temperature of the molten liquid begins to drop.

　　A power failure occurs when the cold furnace charge begins to melt, but the charge has not yet fully melted. There’s no need to dump the molten material from the furnace; just leave it as is. Simply continue supplying water and wait for the next power-on cycle. Medium-frequency induction furnace.

　　2. Medium-frequency electric furnace Leaking iron

　　Mid-frequency induction furnace molten iron leakage accidents can easily cause equipment damage and even endanger the personal safety of casting workers. Therefore, it is essential to perform regular maintenance on the furnace body to prevent molten iron leakage accidents from occurring.

　　When the alarm bell of the alarm device sounds, immediately cut off the power supply, inspect the area around the furnace, and check whether there is any leakage of molten iron. If a leak is detected, promptly empty the furnace and pour out the molten iron. If no leak is found, proceed with inspection and follow the prescribed alarm handling procedures. If it is confirmed that molten iron has leaked through the furnace lining and come into contact with the electrodes, triggering the alarm, then empty the furnace, repair the furnace lining, or rebuild the furnace.