3) At 400" (2 hours), close the observation hole and install the infusion head. At this point, over 90% of the moisture has been removed during the low-temperature drying process.

4) At 860°C, reinsert the debris elimination port into the furnace body. Reduce the air flow. When using an oxygen probe as the carbon potential control element during the drying process, it is essential to remove the oxygen probe. This is because the new furnace, during the drying process, emits elements such as SiNa from refractory bricks and mortar, which can quickly contaminate the oxygen probe, leading to inaccurate control or even complete failure.

3 hearth aging

Furnace aging, also known as the initial carburization process, refers to the use of the furnace after it has been heated up to a certain temperature (not less than 760°F) and the introduction of a carrier gas into the furnace.