Topic: Graphite Crucible
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How to Size Graphite Crucibles
Crucibles are containers, often made of mixtures of graphite and clay, with a cup shape that are used for melting metals and glass as well as conducting experiments with high-temperature chemical compounds. The material of the crucible is c... Read More »
Source: http://www.ehow.com/how_11384489_size-graphite-crucibles.html
Why is graphite mixed with clay to make crucibles?
Graphite is mixed with clay to form refractory crucibles due to it's high melting point, inert nature and abilities to conduct heat. Read More »
Source: http://wiki.answers.com/Q/Why_is_graphite_mixed_with_clay_to_make...
What stores sell graphite crucibles?
Walmart. I bought 2 for $15 the other day. If you don't have a walmart, then amazon has them: http://www.amazon.com/Grobet-GRAPHITE-CR… Read More »
Source: http://answers.yahoo.com/question/index?qid=20120124001812AAIM9BR
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Graphite Crucible
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Graphite has a very high melting point with strong intermolecular forces of attraction between the carbon molecules in it. Thus if used as a crucible for melting metals, it won't melt easily and can be used to melt metals over a wide range ...
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Source: http://answers.yahoo.com/question/index?qid=20080604042323AApRnz7
Try here. Pretty good pricing on graphite crucibles http://www.galleria247.com/Graphite-Cruc…
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Source: http://answers.yahoo.com/question/index?qid=20111207115628AALDOgz
Graphite is a good oxygen scavenger. Liquid copper oxide will react with carbon and make carbon monoxide gas, leaving oxide-free copper. Silver and gold alloys do not stick to the graphite crucible (except when there is too much silicon in ...
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Source: http://www.lacywest.com/neutec_questions.htm
Graphite is a good conductor of heat and it can withstand very high temperatures. Hence it is used in the manufacture of refractory crucibles.
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Source: http://www.tutornext.com/review-questions-carbon-compounds-5/2151
The sprue size determines the size of the hole. Crucibles with 8 mm holes are used with 8 mm (1/4 inch) sprues. Crucibles with 9.5 mm holes are used with 9.5 mm (3/8 inch) or larger sprues.
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Source: http://www.lacywest.com/neutec_questions.htm
The life of a graphite crucible is 150-250 casts. The life of the crucible does not depend on the machine. It depends on the care taken with the crucible during use. It is critical to change the crucible bottom gasket when it turns half-whi...
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Source: http://www.lacywest.com/neutec_questions.htm
