With the continuous improvement of the power density of the new green induction melting furnace, the requirements for safe operation of the furnace, improvement of furnace lining life and noise reduction are becoming higher and higher, and the rationality of the furnace structure is increasingly valued by people. Among them, the heavy-duty steel shell furnace has many advantages such as high durability, high efficiency, high productivity, low noise and easy maintenance.

Unlike the frame furnace, the induction melting furnace is a high-strength annular steel shell with a plurality of large inspection ports. When the furnace is running, the inspection port is closed, and each inspection port can be opened during maintenance. The internal structure of the heavy-duty steel shell furnace is strong, which can avoid the deformation caused by the inclined iron casting, prolong the life of the lining, and the working noise is greatly reduced due to the closed strong furnace shell and the interior of the sound-absorbing insulation material. The sturdy steel shell also effectively protects the induction coil from the risk of splashing metal, giving the furnace maximum safety during operation. In order to effectively insulate and improve the life of the lining, the heavy-duty steel shell furnace is also provided with a cooling ring at the top and the bottom respectively, which serves to uniform the lining temperature and reduce the thermal expansion. Low energy, high strength stainless steel cooling ring greatly improves furnace efficiency.

The new heavy-duty induction melting furnace not only has a strong steel shell, but also designed a thick-walled tube structure coil specially used for induction melting furnace melting, and the coil has the highest conversion efficiency and the smallest resistance by correctly selecting the inter-turn distance of the induction coil. On the one hand, the thick-walled induction coil has a large current-carrying cross section, uniform wall thickness, and is less prone to damage caused by arcing and expansion. On the other hand, the coil adopts a special support system, and each one is firmly locked and has good rigidity. The vibration caused by the electromagnetic force is reduced, and the service life of the lining is greatly prolonged. In addition, the induction coil is covered with a 50% yoke, which effectively changes the distribution of the magnetic field. The isolation of the cushion also reduces noise and vibration, increasing the efficiency of the yoke. The heavy-duty steel shell furnace also adopts an elongated coil design in which the induction coil extends and exceeds the furnace substrate portion, so that the coupling between the charge and the magnetic field from the top to the bottom of the furnace body is very uniform, the energy conversion efficiency is improved, and the stirring due to the magnetic field is also reduced. The effect of force on the bottom lining.

A reasonable furnace structure is very important, and a heavy steel shell furnace is only one of them. Many manufacturers are working hard to improve the structure of the furnace to adapt to the application and development of induction melting furnaces.