graphite alternative
graphite alternative
(OP)
Can anyone recommend an alternative to graphite for use in glass fixturing? The graphite works exceptionally well but is rather delicate and any substantial impact almost certainly causes the fixture to shatter.
Our glass products are heated, pinched, and then fixtured to create a specific profile. The fixture must be able to withstand repeated contact with "molten" glass (not quite molten but very near). The glass must also not stick to the fixture.
I have heard that Tungsten Carbide would perform to expectations but would really like someone to confirm this before we take that extra step.
Our glass products are heated, pinched, and then fixtured to create a specific profile. The fixture must be able to withstand repeated contact with "molten" glass (not quite molten but very near). The glass must also not stick to the fixture.
I have heard that Tungsten Carbide would perform to expectations but would really like someone to confirm this before we take that extra step.





RE: graphite alternative
I don’t know about WC2 in that service. If you have tools of any size they would be quite heavy.
There is a material called white graphite, hexagonal Boron Nitride, that may work. This material is also used as coating for graphite to prevent wetting and erosion. There is one coating that is supposed to increase the strength of graphite mold or crucible. I will try to find information on it.
Rather long URL,but take a look at this page. The material is Combat hBN
ht