Graphite Heater For Vaccum Furnace

Graphite heaters are commonly used accessories in vacuum furnaces. They are suitable for vacuum environments due to their unique physical and chemical properties. During the operation of vacuum furnaces, their components need to be resistant to oxidation and maintain high-temperature stability, and graphite heaters have played a significant role in this scenario.

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product description

The excellent high-temperature resistance and thermal stability of graphite heaters make their strength increase instead of decrease at high temperatures, so that they can be used for a long time at extreme temperatures, which is far superior to metal heaters. At the same time, the low thermal expansion coefficient of graphite heaters ensures the risk of high-temperature deformation and avoids cracking due to thermal stress.

Graphite heaters have excellent oxidation resistance and are suitable for vacuum environments. After the vacuum furnace is evacuated of oxygen, graphite heaters do not need additional coatings to avoid oxidation loss, while graphite will quickly oxidize and fail above 600°C in the air.

In addition, graphite heaters have moderate resistivity and can generate heat evenly after power is turned on. Rapid and uniform heating can be achieved even in the absence of convection in a vacuum. At the same time, the chemical inertness of graphite heaters prevents them from reacting with most metals and ceramics at high temperatures, thereby avoiding contamination of workpieces, and are suitable for semiconductor and high-purity material processing.

Our company manufactures and customizes graphite heaters in various shapes (such as spiral, plate, straight, etc.) to fit various furnace chambers, with low cost and easy maintenance.

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