We often see graphite rods in high temperature vacuum furnaces. As an electric heating body, graphite rod makes the product easy to oxidize at high temperature, and then produces suitable products more easily. The main reason why graphite rods are popular in the market is that they are cost-effective. The following 4 points are the precautions for the usage of graphite rods in vacuum furnaces.

1、Selection of graphite rods with uniform properties

The red heat uniformity of graphite rod becomes worse, which will cause its fracture.

2、Note the surface temperature of graphite rods

The higher the surface temperature of graphite rod, the faster the oxidation rate and the shorter the life.

3、Sufficient voltage adjustment allowance should be left

4、Voltage of graphite rod at later stage of usage

The voltage required by various kinds of graphite rods in the later stage of application will be higher than that of the new rod, so we should pay attention to the voltage in the later stage.

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