There is no problem with cooling. Magnetic leakage causes the furnace shell to heat up and melt. It is estimated that the distance between the induction coil and the furnace shell is unreasonable, which causes the furnace shell to heat up and melt. It should be a medium frequency induction furnace. Steel shell yoke body, this situation is eliminated, because the induction coil is surrounded by yoke protection. The role of the yoke: anti-magnetic leakage, deformation of the induction coil under high temperature working environment, increasing the utilization of magnetic flux
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