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0518 C. Fink Coreless Furnace diagram Inductotherm
Induction coil life varies from coreless furnace to the next, but furnaces with properly maintained coils generally achieve longer lining life, too.

Maximizing Lining Life and Coil Life

In a coreless induction melting furnace, promoting longer lining life can also improve coil life, resulting in less downtime, lower production cost-per-ton, and reduced maintenance costs.

Many people don’t realize that maintenance is interrelated for induction-furnace linings and coils: Short lining life and coil life result in increased downtime, costs, and frequent coil changes. To understand this correlation better, let’s focus on a coreless furnace melting ferrous materials, with silica refractory as the working lining. The observations would be similar with nonferrous materials and an alumina-based refractory. 

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