News

Sep 24,2020

Series Resonant Induction Furnace Melting Technology Solution

Series Resonant Induction Furnace Melting Technology Solution

Sep 28,2020

The intermediate-frequency induction furnace alarm system is critical to safety.

Inverter System Grounding Alarm

Sep 28,2020

Common failure issues with medium-frequency induction furnaces and series-resonant induction furnaces—after reading this article, you’ll know them all!

If the capacitance of a medium-frequency induction furnace or a series-resonant induction furnace is appropriately deducted, it will keep burning indefinitely. What’s the reason for this? 1. The primary reason is that, during prolonged use, water, the furnace itself, or condensers in the water system can cause overheating and blockage due to scale buildup from the capacitance of the water system, eventually leading to burnout. Therefore, during operation, it’s essential to monitor the capacitance of the cooling water flow. If the flow rate becomes abnormal, appropriate measures should be taken immediately.

Sep 29,2020

Overcurrent and overvoltage protection

In overcurrent and overvoltage protection systems, a short circuit in the medium-frequency power supply load or a failure of the inverter switch can cause a short-circuit current to flow through the rectifier circuit, posing a threat to the thyristors in both the rectifier and the inverter. Therefore, it is essential to install protective circuits.

Sep 30,2020

Essential Methods for Medium-Frequency Furnace Commissioning

Essential Methods for Medium-Frequency Furnace Commissioning

Oct 01,2020

Medium- and High-Frequency Induction Furnace Coil Insulation Scheme

Medium- and High-Frequency Induction Furnace Coil Insulation Scheme

Oct 09,2020

Preparatory work for starting up medium-frequency induction furnaces and series-resonant induction furnaces.

1. Preparatory work before starting up the medium-frequency induction furnace and the series-resonant induction furnace: (1) Inspect the lining (excluding asbestos); the lining thickness, measured at approximately 65–80 mm, must be maintained. (2) Check for cracks in the lining. Cracks exceeding 3 mm in width must be promptly repaired by filling them with lining material, ensuring that the cooling water flow remains unobstructed.

Oct 09,2020

What is the technical solution for series resonant induction furnaces?

Series Resonant Induction Furnace Technical Solution: 1. A six-phase dual-power “Y + Δ” 12-pulse rectifier is employed, with rectifier bridges connected in series for output. This configuration reduces the inherent losses of the transformer itself. The 12-pulse rectifier effectively eliminates fifth- and seventh-order harmonic components, significantly reducing harmonic interference on the power grid. Auxiliary equipment and the intermediate-frequency signal power supply can share the same transformer, eliminating the need for a separate power supply and thereby reducing plant investment. Additionally, the voltage withstand requirements for rectifier components are lowered, correspondingly reducing equipment maintenance costs. The series resonant inverter features low switching losses and achieves power savings of over 20% compared to parallel resonant systems, with a 100% success rate from the outset. Lower...

Oct 11,2020

What is a one-drag with II intermediate-frequency induction furnace?

The Yituo Dai II medium-frequency induction furnace is a medium-frequency power supply that operates two furnaces simultaneously, with flexible power distribution.

Oct 13,2020

What are the debugging methods for medium-frequency furnaces?

Medium-Frequency Furnace Debugging Method 1. Turn on the power supply and slowly increase the power potentiometer until the medium-frequency voltage reaches 750 volts. Then, adjust the overvoltage protection potentiometer W8 clockwise until the overvoltage protection is activated and the overvoltage indicator light turns on. 2. Return the power potentiometer to zero, and the quenching device will automatically reset its protective system. Adjust the voltage potentiometer W8 counterclockwise by two to three full turns to release the potentiometer’s limit stop.