Comment nettoyer le creuset en alumine?
The alumina crucible is also called the corundum crucible. Les formes comprennent principalement cylindrique, conique, arc, sagger, et autres formes. Le creuset en alumine a une grande pureté et contient plus de 99% of AL203.
Cleaning the alumina crucible
- Cooling the crucible: Before starting cleaning, make sure the alumina crucible is completely cooled to avoid burns.
- Residue removal: Use plastic or metal tools to gently scrape off the residue in the crucible, such as residual powder, carbide, etc.. Avoid using sharp objects to prevent scratching the crucible.
- Cleaning: Soak in nitric acid for a long time.
- Dry moisture: Dry the alumina crucible before use to prevent bursting caused by water. When drying, it is usually dried at a temperature of 200 degrés. Slowly heat up to 800 degrees in a high-temperature furnace for 6 heures, and then cool used later.
Precautions when cleaning corundum crucible
- Avoid sharp temperature changes: Make sure the cleaned crucible is completely dry before use, and avoid sharp temperature changes to prevent thermal shock from causing cracks.
- Avoid sharp objects: When cleaning and scraping residue, avoid using sharp objects to prevent scratching the surface of the crucible.
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