Main production of fire assay crucible,Graphite crucible,Silicon carbide crucible.Also  accept OEM and ODM.

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Graphite Crucible

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Graphite Crucibles are refractory containers specially shaped for metallurgical operations. These are made of a mixture of Graphite, Refractory Clay, Grog and other additives. ... The crucibles are available with or without spout. These crucibles are used for melting ferrous, non-ferrous metals alloys and noble metals.

A graphite crucible is a container used for melting and casting non-ferrous, non-iron metals such as gold, silver, aluminum, and brass. The main reason graphite crucibles are popular as a manufacturing tool is their thermal conductivity, high temperature resistance, small thermal expansion coefficient for high temperature applications, and their anti strain properties to rapid heating and cooling. They are corrosion resistant to acids and alkaline solutions and have excellent chemical stability.

Graphite can be produced from natural graphite that is a naturally occurring crystalline form of carbon. This form of graphite is manufactured by combining graphite with fire resistant clay or carbon dioxide.

Synthetic graphite is produced by processing petroleum pitch and petroleum coke, which are byproducts of the oil refining process. It has a purer high fixed carbon content with very few impurities and a low sulphur content.

The quality of a graphite crucible is determined by how it is manufactured, which influences its structure, density, porosity, and strength.

There are three methods for shape forming, which are extrusion, vibromolding, and isostitcal pressing.


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