White Refractory Ceramic Crucibles Graphite Melting Crucible For Drying Bur

Ceramic Crucibles, Graphite Crucibles, Refractory Crucibles,For Drying, Burning,
Melting Or Heating



We offer a range of crucibles suitable for calcinating and melting various
alloys.The main quality of a crucible is its ability to withstand temperatures
above the melting temperatures of the alloys deposited by metallurgists without
altering or polluting the molten metal. In some cases, when a crucible is brought
to these very high temperatures, it must be strong enough to withstand being moved
for the casting of parts (bronze foundry for example).


Crucibles (ceramic crucibles, graphite crucibles, refractory crucibles) are
containers for drying, burning, melting or heating various substances for use in
metallurgy, glass industry, growing crystals, laboratory equipment, various high-
temperature equipment.



Our team is available to help you choose the crucible and the material that best
meet your requirements.



Related Data



Main component 99%Al2O3 S-SiC ZrO2 Si3N4
Physical
Property Density g/cm3 3.9 3.1 6 3.2
Water Absorption % 0 0.1 0 0.1
Sinter Temperature °C 1700 2200 1500 1800
Mechanical
Property Rockwell Hardness HV 1700 2200 1300 1400
Bend Strength kgf/mm2 3500 4000 9000 7000
Compression Intensity Kgf/mm2 30000 20000 20000 23000
Thermal
Property Maximum working
temperature °C 1500 1600 1300 1400
thermal expansion
coefficient
0-1000°C /°C 8.0*10-6 4.1*10-6(0-500°C) 9.5*10-6
2.0*10-6(0-500°C)
5.2*10-6(500-1000°C) 4.0*10-6(500-1000°C)
Thermal Shock resistance T(°C) 200 250 300 400-500
Thermal Conductivity W/m.k(25°C 31 100 3 25
300°C) 16 100 3 25
Electrical
Property Resisting rate of Volume ◎.cm 　 　 　 　
20°C >1012 106-108 >1010 >1011
100°C 1012-1013 – – >1011
300°C >1012 – – >1011
Insulation Breakdown
Intensity KV/mm 18 semiconductor 9 17.7
Dielectric Constant (1 MHz) (E) 10 – 29 7
Dielectric Dissipation (tg o) 0.4*10-3 – – –




Technical Ceramics offers crucibles from the following materials:

aluminum oxide (corundum, alundum, high-alumina ceramics);
zirconia;
silicon carbide;
graphite and graphite-containing materials;
graphite with pyrolytic coating;
pyrolytic boron nitride;
quartz ceramics and quartz glass;
refractory ceramics;
refractory composite materials;






White Refractory Ceramic Crucibles Graphite Melting Crucible For Drying Burning 0

White Refractory Ceramic Crucibles Graphite Melting Crucible For Drying Burning 1

Click to Enlarge