News

Aug 07,2020

Development and Improvement of Melting Technology—How Medium-Frequency Induction Furnaces Can Save Energy During Operation—Shandong Induction Furnace

The melting technology of medium-frequency induction furnaces—covering aspects such as raw material control, the proportion of scrap steel added, and control during the melting process—demonstrates the significant impact of melting technology on the microstructure and mechanical properties of castings. Practice has proven that stable raw material quality, a rational charge mix, consistent chemical composition, high-temperature superheating treatment, and effective inoculation treatment are all prerequisites and foundations for producing high-quality castings.

Aug 07,2020

Introduction to Steel-Shell Furnaces

In recent years, steel-shell furnaces have seen relatively rapid development due to their numerous advantages, including high durability, high efficiency, high productivity, low noise levels, and ease of maintenance. The magnetic yoke in a steel-shell furnace plays a shielding and “reflective” role with respect to the magnetic flux lines generated by the coil, which helps reduce magnetic leakage, increase productivity, and achieve energy savings of approximately 5% to 10%. The energy consumption of a steel-shell furnace ranges from 580 to 650 kWh per ton, and the service life of the furnace shell exceeds 10 years.

Aug 08,2020

Heat Loss in Medium-Frequency Melting Furnaces—A Comparison with Resistance Furnaces

Induction heating melting furnaces have low environmental heat losses. Environmental heat loss refers to the heat energy lost from the heating source to the surrounding environment during the heating process through convection, conduction, radiation, and latent heat. Specifically, it includes heat dissipation losses, radiative heat losses, thermal storage losses, and heat losses due to venting.

Aug 10,2020

Why are medium-frequency induction furnaces preferred for nonferrous metal smelting?

Many jewelry manufacturers and craft artisans have chosen medium-frequency melting furnaces for smelting non-ferrous metals and have achieved remarkable results.

Aug 10,2020

The difference between medium-frequency steel-shell furnaces and aluminum-shell furnaces

Compared to aluminum-shell furnaces, steel-shell furnaces are more robust and durable, with an elegant and sophisticated appearance. Especially for large-capacity furnaces that require a highly rigid structure, steel-shell furnaces are the preferred choice from a safety standpoint when tilting the furnace. The magnetic yoke made of silicon steel sheets effectively shields and directs the magnetic flux generated by the induction coil, reducing magnetic leakage, improving thermal efficiency, increasing production output, and achieving energy savings of approximately 5% to 8%. The presence of a furnace lid further minimizes heat loss, enhances equipment safety, and extends the service life of the furnace.

Aug 11,2020

Maintenance methods for induction heating furnaces

Regularly remove accumulated dust from inside the power cabinet, periodically check whether the hose connections are securely fastened, and perform maintenance on the medium-frequency induction furnace.

Aug 12,2020

What is a medium-frequency induction furnace?

An intermediate-frequency induction furnace converts three-phase power-frequency AC current into DC current through rectification, and then transforms the DC current into an adjustable current that is supplied to a circuit composed of capacitors and an induction coil. This process generates high-density magnetic flux lines within the induction coil, which cut through the metal material contained inside the coil, inducing large eddy currents in the metal and thereby heating it.

Aug 13,2020

What are the common faults of medium-frequency induction furnaces?

Fault Classification of Medium-Frequency Induction Furnaces 1. Rectifier Section Faults: When the rectifier trips and simultaneously triggers a high-voltage trip, 70% of such faults are caused by coil issues. The second most common cause is the breakdown of filter capacitors. This issue can lead to overcurrent damage and breakdown of the rectifier’s thyristors, and it can also cause the pulse-triggering board to burn out the diodes in the pulse-triggering circuit.

Aug 13,2020

Causes of furnace leakage and furnace penetration accidents in steel-shell furnaces

Common accidents involving steel-shell furnace bodies include furnace leaks and furnace penetration. If no measures are taken upon the occurrence of such accidents, it could lead to rupture of the coil copper tubes, causing molten iron to come into contact with the cooling liquid and resulting in an explosion. This could trigger serious equipment accidents or even casualties. Therefore, it is essential to provide detailed explanations regarding the potential causes of these accidents, preventive measures, and emergency response plans that should be implemented following an accident.

Aug 14,2020

How to Perform Fault Diagnosis on Intermediate-Frequency Induction Furnaces—Identifying the Causes of Faults in Intermediate-Frequency Induction Furnaces

1. Inspection of Medium-Frequency Induction Furnace Faults: Check the forward and reverse resistance of the inverter thyristor. The standard is as follows: Under system-connected conditions, the forward and reverse resistances typically match the value of the externally connected resistor—5 kΩ. If the component is damaged, the resistance will drop to tens of ohms or even zero ohms.