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Graphite Crucible


Different size is available, can be customized

Carbon Content

SiC graphite crucible, Spouted crucible, Inductor crucible, Elliptical crucible(U-shaped Crucible)


Graphite and Silicon carbide

Working temperature


Melting Metal

Aluminum, Copper, Brass, Bronze, Silver, Tin, Zinc, etc


High density, high strength, dense uniform and defect-free.


Wooden box

Graphite crucible is made of natural flake graphite as the main raw material and plastic refractory clay or carbon as binder. It has the characteristics of high temperature resistance, strong thermal conductivity, good corrosion resistance and long service life. It has strong corrosion resistance on acidic and alkaline solutions, has excellent chemical stability, and does not participate in any chemical reactions during the smelting process. The inner wall of the graphite crucible is smooth, and the melted metal liquid is not easy to leak and adhere to the inner wall of the crucible, so that the metal liquid has good fluidity and is suitable for various mold casting.

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Graphite Crucible’s Application

1)Applicable metal

Our SiC graphite crucibles are designed to provide melting solutions for die casting, casting, chemical and non-ferrous metal smelting plants. The melting applications include smelting and casting for non-ferrous metals and precious metals such as zinc, zinc alloy, aluminum. aluminum alloy, copper, copper alloy, master alloy, gold and silver…etc. and high acid and alkali corrosion metal.

2)Applicable furnace

Our spouted crucibles are applied for many industries. normally main used in melting and foundry. And the most important is that this type of crucibles are adopted in the different furnaces according to the crubcibl materials. It can be suitable for a variety of furnaces, such as Electronic resistance furnace, Coke furnace, Holding furnace,Flame furnace, Coke furnace, Bio particle furnace, Gas furnace, Oil furnace,Electromagnetic induction furnace, Intermediate frequency furnace.


Graphite Crucible’s Advantages

(1) Higher thermal conduction: Silicon carbide graphite crucible uses high thermal conductivity raw materials such as graphite, which shortens melting time and saves energy; in addition, higher thermal conductivity materials are used, with dense structure, low apparent porosity and higher thermal conductivity.

(2) Long life: Life is 3-5 times longer than the ordinary clay graphite crucible.

(3) Excellent thermal shock resistance: Silicon carbide graphite crucible has strong heat-resistant impact function and it is not easy to break under sharply heating and cooling;The heat shock strength is high, so any process can be carried out safely.

(4) Higher temperature resistance: The using temperature range 400-1600℃

(5) Corrosion resistance: Advanced materials and glaze recipes, effectively resistance to corrosion.

(6) Anti adhesion: Because graphite has the characteristics of not easy to adhere to the molten metal, the penetration and adhesion of the molten metal is less;

(7) Less metal pollution: Because of the choice of high purity inorganic material, little or no harmful impurities into products in the metal melting process.

(8) Energy saving and environment-friendly:Higher heat conduction can save a lot of fuel and reduce pollution of waste gas.

(9) High strength: High quality materials are selected, high pressure isostatic pressing, fair combination, high strength, scientific product modeling and high pressure bearing capacity, good crack resistance. So it maintains the original physical and chemical properties of natural graphite.

(10) Antioxidant:Unique anti-oxidation design, and use high-purity raw materials to protect graphite; high oxidation

resistance is 5-10 times higher than the ordinary graphite crucible.

(11) Less slag sticking: less slag hanging on the inner wall, greatly reducing the possibility of thermal resistance and expanding and cracking, and keeping the capacity maximized.

Technical Parameters

Content Carbon 45%~50%
SiC 40%~50%
Resin 1%~5%
Fe2O3 1%~5%
Porosity 13%
Bending strength(MPa) 7-18
Density (g/cm3) 2.1~2,4
Thermal expansivity(% at 800℃) 0.30
Thermal conductivity (w/m.K) 25-40