Crucible tongs: what they are for and how to use them
Crucible tongs are the tool used to grip the glowing crucible to take it out of the furnace or pour the metal into the mold.
Types #
- Ring tongs: surround the crucible and hold it firmly; the safest for pouring.
- Curved-jaw tongs: hug the body of the crucible.
- Flask tongs: for handling the hot casting flask.
How to choose #
They must fit the exact size of the crucible, be made of heat-resistant steel and have long handles with insulating grips. Tongs that do not fit can drop the crucible.
Safe use #
- Preheat the tongs along with the crucible to avoid thermal shock.
- Check that they grip well before lifting.
- Pour with a smooth, slow motion.
- Use protective equipment.
Care #
Clean off metal residue and oxide, and check the pivots: if they are loose, replace the tongs.
See also #
This entry was drafted with the help of AI and is pending review by the author.
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