1，Steel shell induction melting furnace durable, beautiful and generous, especially the large-capacity furnace (typically in excess of 1.5-2 tons suggested the use of steel shell induction melting furnace body) needs a strong, rigid structure, from a security perspective turndown consideration should Try to use steel shell induction melting furnace .

2，The unique yoke of the steel shell induction melting furnace shields and emits the magnetic lines generated by the induction coil, reduces the magnetic flux leakage, improves the thermal efficiency, increases the output, and saves energy by about 5%-8% .

3，The presence of the furnace cover reduces heat loss and increases the safety of the equipment.

4，Induction melting furnace steel long life aluminum shell at the high temperature oxidation more serious, resulting in metal fatigue and toughness. At the foundry enterprise site, it is often seen that the aluminum shell induction melting furnace shell used for one year or so is broken, and the steel shell induction melting furnace has much less leakage current, and the service life of the equipment greatly exceeds the aluminum shell induction melting furnace .

 Steel shell induction melting furnace

5，The safety performance of the steel shell induction melting furnace is much better than that of the aluminum shell induction melting furnace . The aluminum shell induction melting furnace is easily deformed due to high temperature and heavy pressure during smelting, and the safety is poor. The steel shell induction melting furnace uses a hydraulic tilting furnace, which is safe and reliable.

Aluminum shell induction melting furnace .

6，Steel shell induction melting furnace . Energy-saving and efficient, low operating cost: electric furnace thermal efficiency is not less than 80% , 3-5% higher than general equipment ; ton iron consumption is more than 30 degrees than general equipment , that is, 90 degrees per furnace the above;

 7，High power factor and low harmonic pollution: for example, with large capacitance over-compensation measures, the power factor can reach 0.98 at full power operation ; for example, the rectifier transformer adopts a phase-shifting structure (the primary side of the transformer is offset by an electrical angle of 30° , respectively ). Limits inhibit the impact and pollution of higher harmonics on the grid;

8，The steel shell induction melting furnace has good technology and excellent material quality, and improves the service life of the equipment. For example, the yoke is made by the imported cold-rolled Z11 oriented silicon steel sheet from Japan , which minimizes the magnetic loss and improves the electromagnetic coupling efficiency. The T2 with a wall thickness of 4 mm is used . The copper tube is made of an inductor, and each cymbal is wrapped with an insulating cloth and insulated by integral dipping and drying, thereby avoiding the ignition between the daytimes and greatly improving the service life of the coil;

9，The steel shell induction melting furnace has reliable protection and low equipment failure rate: for example, a complete multi-stage protection system (water pressure, phase loss, undervoltage, overcurrent, overvoltage, off time, through, operation interlock, etc.); It adopts sweeping type of excitation and zero voltage starting technology, which enables the operator to achieve 100% successful start without selecting the starting voltage and starting frequency . Refer to the US ( ABB , pillar , Ajax ) company, Japan Fuji Electric and other foreign advanced control. Technology, self-developed inverter control circuit, non-faulty automatic restart function and power automatic adjustment function, and greatly improve the anti-interference ability of the control loop;

10，The steel shell induction melting furnace is easy to operate and easy to maintain: for example, the starting and output power only needs to rotate a potentiometer to realize the “ fool ” operation; the PLC control system enables the intermediate frequency power supply to have an operation interlock function, which avoids damage due to misoperation. Equipment, in the production process, does not need to be dedicated to the power state and other operations besides power.

   Summary: Steel shell induction melting furnace is more practical than aluminum shell induction melting furnace.