Graphite crucible is a graphite product as the main raw material, and plasticity refractory clay is used as a binder. It is mainly used for smelting special alloy steel, melting non-ferrous metals and alloys thereof with refractory graphite crucible. Graphite crucibles are an integral part of refractory materials in terms of product performance and use.
First: check the surface of the graphite crucible. The surface of the good graphite crucible is basically free of pores, so that the crucible can be more resistant to oxidation.
Second, weigh the weight of the graphite crucible. Under the same size, the weight is relatively heavy, which is the best.
Third, to distinguish the degree of graphitization of graphite crucibles, use some metal objects such as keys to slide down the surface of the crucible. Softer and more lustrous is a good graphite crucible.
So how should graphite crucibles be cured?
Graphite crucible is an advanced refractory vessel made of natural flake graphite, wax, silicon carbide and other raw materials for smelting, casting copper, aluminum, zinc, lead, gold, silver and various rare metals.
1. Place the dry place after use and avoid rainwater intrusion; use it slowly to 500 degrees Celsius before use.
2, should be based on the volume of the feed, avoid too tight, so as not to cause thermal expansion and cracking of the metal.
3, when taking out the metal melt, it is best to use a spoon to pull out, try to use less calipers, if the use of calipers and other tools should be consistent with the shape of the ,, to avoid excessive local force and shorten the service life.
4. The service life of the crucible is related to the usage. The strong oxidizing flame should be prevented from being directly sprayed onto the crucible, and the raw material of the crucible is oxidized for a short life.
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Post time: Jun-12-2019