News

Oct 14,2020

How to maintain a medium-frequency furnace in winter

1. To maintain the medium-frequency furnace, it needs to be shut down for one week or half a month to check all its performance parameters, enabling us to promptly understand the equipment’s condition. Below are the inspection steps that must be carried out daily throughout the one-week or half-month period.

Oct 15,2020

How to assess the quality of a medium-frequency melting furnace

The medium-frequency melting furnace is a crucial piece of equipment for foundries, and its quality directly affects the overall production efficiency of the entire foundry. A high-quality medium-frequency melting furnace is not only durable but also energy-efficient, enabling companies to significantly save on labor and time costs.

Oct 14,2020

What is the operating principle of the inverter section in a 1-to-2 series resonant induction furnace power supply?

We’ve already seen the one-to-two series-resonant induction furnace! How much do you actually know about it? What’s the working principle behind the inverter section of the series-resonant intermediate-frequency signal furnace—specifically, the one-to-two type? Let’s take a closer look at its manufacturing details together!

Oct 16,2020

Causes of and Measures to Eliminate Howling in Medium-Frequency Furnaces

Analysis of Noise Sources in Medium-Frequency Induction Furnaces: 1. The induction coil is excited by alternating electromagnetic forces. Multiple current-carrying cylindrical tubes are used to simulate eddy currents within the workpiece. The diameters of these cylindrical tubes are related to the penetration depth of the eddy currents in the workpiece; these tubes are concentric with the induction coil. Since an alternating current flows through the induction coil, according to Lenz’s law, the direction of the eddy currents in the workpiece also changes continuously. Consequently, the induction coil experiences electromagnetic forces both radially and axially, and the magnitude and direction of these forces vary periodically. The vibration frequency of the coil corresponds to the fundamental frequency of the current.

Oct 18,2020

Precautions for Turning the Medium-Frequency Furnace On and Off

Precautions for Turning the Medium-Frequency Furnace On and Off

Oct 17,2020

Selection Between Series-Connected and Parallel-Connected Medium-Frequency Furnaces

The difference between series-connected and parallel-connected medium-frequency furnaces lies in their oscillating circuits. The former uses L, R, and C in series, while the latter uses L, R, and C in parallel. As a casting enterprise, which type of medium-frequency furnace—series-connected or parallel-connected—should you choose?

Oct 19,2020

The Most Detailed Handling Plan for Medium-Frequency Furnace Power Outages, Steel Leaks, and Water Interruptions

When an accident occurs suddenly, remain calm and handle it correctly to prevent the accident from escalating and to minimize its impact.

Oct 20,2020

Reasons for the high energy consumption of medium-frequency induction furnaces

1. Power density configuration of the induction furnace (1). A higher power density configuration leads to faster melting rates and better energy-saving performance. Whether the electric furnace can maintain a high power factor when supplying power to the furnace is also the key distinction between high-energy and low-energy consumption.

Oct 21,2020

Effective Measures to Extend the Lifespan of Lining in Medium-Frequency Furnaces

1) Select the appropriate lining material based on the pouring temperature and the properties of the molten iron. 2) The lining shall be compacted to a density greater than 2.3 g/cm³. During furnace construction, smoking is strictly prohibited, and any foreign objects are not allowed to be brought into the construction site.

Nov 09,2020

Precautions for Using Medium-Frequency Induction Furnaces and Medium-Frequency Electric Furnaces

In medium-frequency induction furnaces and medium-frequency electric furnaces, environmental heat losses during the heating process refer to the heat lost by the heat source to the surrounding environment through convection, conduction, radiation, and latent heat. These losses include sensible heat loss, radiative heat loss, stored-heat loss, and overflow heat loss. Compared with resistance-heating furnaces, induction systems rapidly raise the temperature of melting furnaces during heat treatment. In terms of managing heat losses and overflow losses—such as the heat carried away by furnace gases and cooling water—their behavior is similar to that of resistance-furnace heat treatment technologies. However, in induction heating, the stored-heat loss and radiative heat loss are significantly lower than those in resistance-furnace heat treatment. The primary difference lies in the inductor used for induction heating.