Graphite Crucible

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Special graphite crucible for vacuum coating

Special graphite crucible for vacuum coating is applied to the aluminium evaporation gasification on CPP, PET, BOPP in vacuum to produce aluminum composite foil. It is a large consumption of components which must be used in the production process. The quality of graphite crucible can decide the length of working life and directly affect the product quality and the production cost of aluminum foil.

We have anti oxidation and anti leakage treatment of graphite material, greatly improves the oxidation resistance of graphite crucible, bulk density, flexural strength and compressive strength, enhanced corrosion resistance, hardness, lower porosity and permeability, greatly weakened the  molten aluminum and gaseous aluminum molecular erosion ability and prolong the working life. Quality of graphite crucible for vacuum coating has been greatly improved. The antioxidant, no overflow, no crack, no leakage aluminizing, the evaporation is good, the working life is long, the average furnace reached 18600 meters / roll 50 - 60 furnace, 24000 meters / roll 40 - 50 furnace , the production of 12500 meters/roll, 10000 meters/roll, 9000 meters/roll, 5000 meters/roll, times of furnace have greatly improved.

Specification

Property

Unit

Value

BULK DENSITY

g/cm3

1.95 min.

GRAIN SIZE

μm

43 max

ELECTRICAL RESISTVITY

μ.Ω.m

8.9 max.

COMPRESSION STRENGTH

MPa

125 min.

FLEXURAL STRENGTH

MPa

68 min.

SHORE HARDNESS

--

65 min.

ASH CONTENT

%

0.046 max.

Size

OD

ID

HEIGHT

WALL THICKNESS

135mm

115mm

120mm

10mm

graphite crucible

A crucible is a container used to hold metal for melting in a furnace and it is needed to withstand the extreme temperatures encountered in melting metals. The crucible material must have a much higher melting point than that of the metal being melted and it must have good strength even when white hot.

Graphite crucible can withstand the high temperature, and has good resistance to chemical erosions and thermal shock. Especially graphite crucible is ideal for the melting of aluminum, copper and other metals.

Quartz crucible has the advantages of high purity ,high temperature resistance, with big size ,good thermal insulation, economization on energy ,quality stability etc.

Fused quartz crucibles are used in the manufacture of silicon metal for semiconductor wafer applications and polysilicon. In order to produce high quality wafers, starting materials are added to a crucible heated to high temperatures and pulled from the melt as a single crystal. Fused Quartz is one of the few materials that can combine the high purity and high temperature properties required for this process.

GW offers graphite crucibles & Ceramics (Quartz) crucibles in different sizes and types. Whenever you need crucibles, just feel free to contact us, and we will reply you in a shortest time.

Specifiacation

Approx.Capacity (kg)TOP DiaBOTTOM DiaHeight
1 in mm in mm in mm
2.75 70 1.96 50 3.14 80
2 in mm in mm in mm
3.14 80 2.16 55 3.74 95
4 in mm in mm in mm
4.33 110 3.14 80 5.11 130
6 in mm in mm in mm
4.72 120 3.26 83 5.90 150
8 in mm in mm in mm
5.51 140 3.70 94 6.69 170
10 in mm in mm in mm
6.29 160 4.33 110 7.08 180
12 in mm in mm in mm
7.08 180 4.52 115 9.44 240
16 in mm in mm in mm
8.26 210 5.51 140 10.23 260
20 in mm in mm in mm
8.46 215 6.29 160 10.23 260
60 in mm in mm in mm
10.63 270 7.67 195 13.18 335
70 in mm in mm in mm
11.61 295 7.87 200 13.78 350
80 in mm in mm in mm
11.61 295 8.07 205 14.56 370
100 in mm in mm in mm
12.99 330 8.66 220 15.74 400
120 in mm in mm in mm
13.58 345 9.64 245 18.11 460
150 in mm in mm in mm
15.15 385 10.63 270 20.47 520
200 in mm in mm in mm
16.14 410 11.22 285 22.04 560
250 in mm in mm in mm
17.32 440 11.22 285 23.22 590
300 in mm in mm in mm
18.11 460 12.20 310 22.83 580
350 in mm in mm in mm
18.50 470 12.20 310 25.59 650
400 in mm in mm in mm
20.47 520 13.78 350 25.19 640
500 in mm in mm in mm
20.66 525 13.78 350 27.55 700
600 in mm in mm in mm
22.44 570 14.17 360 29.92 760
800 in mm in mm in mm
22.83 580 14.17 360 31.49 800
1000 in mm in mm in mm
25.19 640 17.71 450 32.67 830

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