How much temperature does a graphite crucible hold?
The graphite crucible has a maximum temperature of 1800 degrees Celsius and can be used for a long time! But generally graphite crucibles are used below 1300 degrees celsius!
Mainly depends on the use of working conditions, the use of air, then more than 600 degrees Celsius will begin to be oxidized, and the service life will not be long.
Attention to the use of graphite crucibles1, the pot stored in ventilated and dry environment, so as not to affect the use of damp.2, the crucible should be handled gently in the handling, do not fall shock, do not roll, so as not to damage the protective layer of the crucible surface.3, before use to bake the crucible in advance, baking temperature from low to high temperature and slowly, turning the crucible, let the heat evenly, excluding crucible body water, preheating temperature gradually rose to 500 degrees Celsius (such as preheating caused by improper crucible spalling, cracking, not a quality problem will not be returned)4, crucible furnace and crucible to complete, up and down the gap around to meet the requirements, not the pressure in the crucible furnace cover body.5, use should avoid direct flame spraying crucible body, should be sprayed to the crucible base.6, when feeding should be added slowly, it is best to scrap, aniseed don't put too much, too tight, so as not to split up the crucible.7. The crucible tongs used for loading and discharging should be in conformity with the appearance of the crucible, so as not to block the crucible.8, the crucible is best for continuous use, so as to better play its high performance.9, the amount of additive should be added in the smelting process, and excessive use will reduce the service life of the crucible.10. When using the crucible, rotate the crucible periodically so that it can be heated evenly and extended.11, remove the crucible inside and outside the wall of slag and coke should be tapped to avoid damage to the crucible.
In theory, no problem, mainly depends on the working conditions used. If used under air, more than 400 degrees will start to be oxidized, and the service life will not be long. If it's vacuum, the one thousand or so should be nothing.