Method for determining whether the lining of the induction furnace is removed

A. When the thickness of the furnace lining is less than 50 mm, it must be removed.

B. When the lining alarm current is too large, confirm that the alarm device has no malfunction. At this time, the furnace needs to be dismantled.

C . When under a certain rated DC voltage, the weight of the molten iron in the early and late stages is equal, the furnace lining has no obvious local erosion, the DC current rises by 15-20%, and the furnace lining must be removed. During use, if the DC ammeter and DC voltmeter shake greatly, or if the DC ammeter continues to rise and the DC voltmeter continues to fall, it proves that the furnace lining has leaked, and urgent measures must be taken immediately.