Knowledge What is the Temperature of a Plasma Furnace? (7 Key Points)
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Tech Team · Kintek Solution

Updated 2 months ago

What is the Temperature of a Plasma Furnace? (7 Key Points)

The temperature of a plasma furnace can vary significantly depending on its specific application.

It ranges from low temperatures of about 1400°F (750°C) for plasma nitriding to high temperatures up to 2400°F (1100°C) for plasma carburizing.

Some plasma furnaces, particularly those used in electrometallurgy, can operate at even higher temperatures, up to 2650°F (1454°C).

1. Low-Temperature Plasma Furnaces

What is the Temperature of a Plasma Furnace? (7 Key Points)

Low-temperature plasma furnaces, typically used for plasma nitriding, operate around 1400°F (750°C).

These furnaces are designed to prevent oxidation of the metal parts being treated.

They are constructed as either cold-wall or hot-wall furnaces, with the former having water-cooled double walls to maintain the internal temperature while keeping the furnace walls cool.

2. High-Temperature Plasma Furnaces

For applications like plasma carburizing, furnaces operate at higher temperatures, up to 2400°F (1100°C).

These high-temperature furnaces are usually cold-wall designs, equipped with water-cooled double walls.

They can include high-pressure gas quench systems or integrated oil quench tanks for rapid cooling after heat treatment.

3. Plasma Arc Furnaces

In electrometallurgy, plasma arc furnaces use a plasma flow, typically generated by an electric arc heater (plasmatron), to melt substances.

These furnaces offer continuous temperature adjustment by altering the plasmatron's electric conditions, allowing for precise temperature control.

The temperatures in these furnaces can reach up to 2650°F (1454°C), crucial for processes requiring high temperatures or for maintaining the longevity of the furnace's hot zone.

4. Temperature Uniformity

Temperature uniformity across the furnace chamber is critical for consistent results.

For example, some furnaces conform to AMS 2750D standards, ensuring that the temperature variation within the furnace remains within specific limits (+/- 20°F to +/- 10°F depending on the temperature range).

This is essential for various heat treatment processes.

5. Plasma Arc Melting Furnaces

These furnaces, similar to arc-welding machines, use an electrical arc between two electrodes to generate plasma.

The plasma, a highly ionized gas, can reach extremely high temperatures, from 3,000 to 7,000 degrees Celsius.

This high temperature is necessary for melting materials in controlled atmospheres, ensuring high purity and minimal contamination.

6. Summary

The temperature of a plasma furnace is highly dependent on its intended use.

A wide range of temperatures is available to suit different metallurgical and heat treatment processes.

The precise control and uniformity of temperature are critical for achieving the desired material properties and purity.

Continue exploring, consult our experts

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Tailored for applications ranging from 1400°F nitriding to 2650°F electrometallurgy.

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Ensuring top-tier results for your specialized heat treatment needs.

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