Graphite Crucible
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Graphite Products
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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 Dia BOTTOM Dia Height 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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