Graphite Crucible, Metal Melting & Casting Graphite ...
2 days agou2002·u2002They can be otherwise called refractory carbonaceous. The crucible (graphite crucibles) usually contains 30 – 50% flake natural graphite. Binders such as clay, plastic clay, tar or pitch and silicon powder (2%) are usually added in weight percent to give strength before firing and prevent further oxidation respectively.
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