High-temperature box furnaces are widely used in many industries. What do we know about them? What should we pay attention to when using them? Next, the box furnace manufacturer will provide a detailed introduction:

1. Place on a flat ground or concrete surface. The control panel should not be too close to the furnace chamber to prevent overheating and potential damage to electronic components.

2. Install control switches with appropriate power ratings according to the rated voltage of the high-temperature box-type resistance furnace. Insert the thermocouple into the center of the furnace chamber, and seal the gap between the hole and the thermocouple with asbestos rope. Connect the thermocouple to the controller using compensating wire (or insulated copper-core wire) as much as possible, ensuring that the positive and negative poles are not reversed.

3. Equipment must be pre-heated before initial use or after extended periods of non-use.

During the firing or melting of samples in the furnace, it is necessary to place the samples in a high-temperature-resistant crucible and strictly control the operating conditions to prevent splashing of the sample liquid, corrosion, and adhesion to the furnace chamber. Place an alumina pad at the bottom of the furnace chamber, and promptly clean the molten slag, metal oxides, or other impurities from the pad to maintain the cleanliness of the furnace chamber.

5. Natural aging occurs during the application of silicon-carbon rods used in high-temperature box-type resistance furnaces. They can be gradually adjusted to the maximum capacity. If the heat output is insufficient (i.e., the power does not reach the rated value), new silicon-carbon rods should be replaced.

6. When placing crucibles and crucible stands into the furnace, never touch the thermocouple, as the hot junction of the thermocouple inserted into the furnace becomes brittle and prone to breakage at high temperatures.

7. After firing is complete, disconnect the power and allow the kiln to cool naturally (also, the door can be opened for rapid cooling), then open the kiln door to remove the fired materials.

8. Flammable and explosive materials should not be stored near the high-temperature box-type resistance furnace, and items with an explosion risk should never be burned inside the furnace.