What are the equipment features of a medium-frequency furnace?
2022-03-10
What are the equipment features of a medium-frequency furnace?
1. Resource-saving feature
The medium-frequency furnace offers faster heating, improved production efficiency, reduced oxidation and decarburization, lower material and cost requirements, and extended mold life.
The principle behind medium-frequency furnace induction heating is electromagnetic induction, allowing heat to generate directly within the workpiece itself. As a result, ordinary workers can start continuous forging operations just 10 minutes after turning on the medium-frequency electric furnace—no need for specialized furnace operators to preheat or seal the furnace beforehand. This heating method boasts rapid heating speeds and minimal oxidation, with oxide burn-off during forging reduced to only 0.5% compared to 2% with gas furnaces and 3% with coal-fired furnaces. Additionally, medium-frequency heating is highly energy-efficient: it saves at least 20 to 50 kilograms of steel raw material per ton of forged parts when compared to coal-fueled processes. Moreover, material utilization reaches an impressive 95%. Another key advantage is the uniformity of heating, resulting in negligible temperature differences between the core and surface of the workpiece. This not only significantly extends the lifespan of forging dies but also ensures that the surface finish remains remarkably smooth, with roughness levels well below 50 microns. In terms of energy efficiency, medium-frequency heating outperforms both oil-based and gas-based systems, offering energy savings of 31.5% to 54.3% compared to oil heating and 5% to 40% compared to gas heating. Overall, this advanced heating technology enhances product quality by reducing defect rates to as low as 1.5%, boosting production efficiency by 10% to 30%, and extending die life by 10% to 15%.
2. Environmental Features
The working environment is excellent, enhancing both employees' working conditions and the company's image—plus, it’s pollution-free and energy-efficient.
Compared to induction furnaces and coal-fired furnaces, workers no longer endure the scorching heat or smoke from coal stoves under the blazing sun. This not only meets the stringent environmental standards set by regulatory authorities but also enhances the company’s external image and aligns with the future development trends of the forging industry. Induction heating is the most energy-efficient heating method among electric furnaces, consuming less than 360 degrees of electricity when heating a ton of forged parts from room temperature up to 1,100°C.
The medium-frequency furnace offers uniform heating, features a large core temperature difference, and provides high-precision temperature control.
Induction heating generates heat directly within the workpiece, resulting in uniform heating and minimal temperature differences between the core and surface. By using a temperature control system, operators can precisely manage temperatures, enhancing product quality and increasing the rate of defect-free items.
What are the characteristics of an intermediate-frequency melting furnace?
a. Fast melt rate, excellent energy-saving performance, reduced combustion, and lower energy consumption.
b. Self-mixing function, uniform melt temperature, and consistent metal composition.
c. The electric heating operates in a well-maintained environment.
d. Excellent startup performance—both empty and fully loaded furnaces can achieve 100% startup capability.
How does the cooling system of a medium-frequency furnace work?
The cooling system primarily cools two key components: the power supply and the furnace body. The power supply section includes various power devices and electrical capacitor banks housed within the power cabinet. Comprising precision electrical equipment, this section features relatively narrow cooling pipes; to prevent fouling and clogging inside the pipes, softened or purified water is typically used.
The electric furnace and power supply each use separate cooling systems. The medium-frequency power supply features a fully enclosed cooling system, while the furnace body also employs a fully enclosed cooling mechanism.
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