The thick-walled square tube is used as the furnace shell of the support structure, which has good rigidity, compact structure, durability and practicality.

With this structure, when abnormalities are found in water-cooled cables, cooling water tube furnaces, magnetic yokes, and induction coils, they can be observed intuitively, which facilitates timely troubleshooting and maintenance, and avoids unnecessary losses.

In this structure, a corresponding magnetic yoke is arranged corresponding to the square tube, and the induction coil is firmly supported, so that the mechanical strength of the entire furnace body is improved, so the furnace lining is not affected in any way when the furnace is tilted to ensure the normal operation of the intermediate frequency electric furnace.