The yoke of the induction melting furnace adopts a contoured structure, and the arc of the inner arc surface is the same as the outer arc of the induction coil, so that the yoke can be evenly distributed on the outer side of the induction coil, thereby maximally restraining the magnetic field radiated outward from the coil, reducing External magnetic circuit reluctance. The yoke is clamped by stainless steel plates and stainless steel clamps on both sides and fixed by welding. A cooling water pipe is welded to the stainless steel plate on both sides for cooling the yoke. The cooling water pipe can withstand 0.45Mpa water pressure and no leakage within 15min. After the yoke is assembled, the bending degree is not more than 4 mm, and the deviation between the theoretical center line and the actual center line is not more than 3 mm.

A PTFE sheet and an asbestos rubber sheet are interposed between the yoke and the coil. The PTFE sheet has high dielectric strength and high temperature resistance, and the asbestos rubber sheet has high heat resistance. This ensures insulation and heat resistance between the yoke and the coil.

    Yoke profile yoke diagram 

Each yoke is fixed by a screw rod fixed on the furnace shell, and a uniform top force is formed in one circumference of the coil, so that the yoke is fixed and the coil is fixed, and the coil is not generated during the melting and discharging process. mobile.