China Carbon Crucible Graphite Crucible Iron Cast Crucible

Graphite crucible

Graphite crucible, also called copper melting bag and copper melting, is a kind of crucible made of graphite, clay, silica and paraffin stone as raw materials. Graphite crucible is mainly used to smelt nonferrous metals such as cResonator opper, brass, gold, silver, zinc and lead and their alloys.
The graphite crucible is made of natural flake graphite as the main raw mateFurniture Making Machine rial, and is made of plastic refractory clay or carbon binder. It has the characteristics of high temperature resistance, good thermal conductivity, good corrosion resistance, long service life and so on. In the process of high temperature use, the coefficient of thermal expansion is small, and it has a certain strain resistance to quench and heat. The corrosion resistance of acid and alkaline solution is strong, and it has excellent chemical stability, and does not participate Environment Protection Device in any chemical reaction in the melting process. The inner wall oDemonstrational & Teaching Utensil f the graphite crucible is smooth, and the molten metal liquid is not easy to leak and adhere to the inner wall of the crucible, so that the mVariable-Frequency Drive etal liquid has good fluidity and casting property, and is suitable for casting and molding of various moulds. Graphite crucible is widely used in smelting alloy tool steel and smelting nonferrous metals and alloys because of its superior properties.

Characteristicof graphite crucible:

high strength,

high purity,

high temperature resistance,

high machining capabilities,

high precise machining

high temperature shock resistance.

Physical and chemical index:

The Graphite crucible have adopted three kinds of materials:Fine-grain Specialty Graphite, High pure graphite, Isostaic graphite.

Fine-grain Specialty Graphite

High pure graphite

Isostaic graphite

Item

Unit

Typical value

Typical value

Typical value

Max grain size

0.8mm

≤325mesh

5-22vm

Bulk density

g/cm3

1.73-1.76

1.68-1.85

1.8-1.85

Specific resistance

Μ Ω .m

7.5

≤14

≤15

Bending strength

M pa

11-12.5

≥25

12.5

Compressive strength

M pa

27-34

≥50

34

Thermal Conductivity

W/(m .k)

150-160

≥130

160

C.T.E.(100-600)ºC

10-6/ºC

2.2

≤2.5

2.1

Ash content

%

0.09

≤0.15

0.09

Our graphite crucible is made from selective raw material,and SURFACE anti oxidation ,Which improving the stability,delaying the corrosion and ensuring to keep the metal from being polluted by the graphite crucible.

Its advantages:

1.Hightemperatureresistance,itsfusionpointis3850ºC,boilingpointis4250ºC.

2.Perfectthermalresistanceproperty.

3.Strongchemicalstability.Soitisgoodformeltingthehighpuremetals.

4.Strictqualityproductstesting,whichcanmakesureourproductsareofgoodqualitytohavea

long servicelife.

Application

Graphite crucible is widely used in all kinds of furnace to melting, such as jewelry, gold, silver, copper, brass, iron, aluminum, zinc, lead and so on.It is widely used in nonferrous metal and precious metal industry, mould industry, glass industry, rare earth industry, photovoltaic industry, laboratory analysis industry and other fields

Others , DO OEM

Items

Unit

Specification

GrainSize

mm

0.045-4

BulkDensity

g/cm3

1.65-1.85/1.85-1.92

Resistivity

μΩ•m

6.0-11.0

BendingStrength

Mpa

18-36

CompressiveStrength

Mpa

36-75

C.T.E

x10-6/ºC

2.9-3.0

Ash

%

0.2-0.3

Round

Diameter

mm

10-1100

Length

mm

≤2500

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