The magnet yoke is a yoke steel made of silicon steel sheet, which is evenly and symmetrically placed around the induction coil. Its function is to restrain the magnetic leakage of the induction coil from spreading outward, to improve the efficiency of induction heating, and to act as a magnetic shield to reduce the heat of metal components such as the furnace frame, and to reinforce the role of the inductor.
The magnet yoke usually refers to the soft magnetic material that does not produce magnetic field (magnetic lines of force), and only plays the role of magnetic line transmission in the magnetic circuit, and the magnet yoke is generally made of soft iron, A3 steel and soft magnetic alloy with high permeability, and in some special occasions, the yoke is also made of ferrite material.
The shielding of the magnetic yoke of the medium frequency furnace can reduce the leakage of magnetism, prevent the furnace from heating up and improve the efficiency. At the same time, the magnetic yoke plays the role of supporting the fixed induction ring, so that the furnace body can achieve high strength and low noise.
The magnet yoke is a crescent-shaped yoke made of cold-rolled silicon steel sheet and stainless steel plywood, and the combined surface of the core and coil is a circular surface. This structure can make full use of the magnetic conductivity of the silicon steel sheet and reduce the possibility of local heating in the medium frequency induction melting furnace.
Specially designed water-cooled heat sink is installed between the magnetic yoke and the stainless steel plate clamp, which ensures that the upper magnetic yoke is at room temperature under the operating condition of the medium frequency induction furnace and prevents the deformation caused by the high temperature of the magnetic yoke, thus strengthening the support of the induction coil and improving the overall strength of the furnace.
