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Help CenterNitride Bonded Silicon Carbide Parts,silicon Nitride Crucible
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Specifications
1. Competitive prices
2. High temperature resistant
3. Various sizes available
4. Good quality
Nitride bonded silicon carbide parts,silicon nitride crucible
Nitride bonded silicon carbide parts,silicon nitride crucible
Advantages of silicon nitride crucible
1.Long working lifetime: its working lifetime is increased 3-5 times over normal clay-crucible due to the compact body formed under high pressure.
2.High thermal conductivity: high-density body and low apparent porosity greatly improve its heat conductivity.
3.New-style materials: new heat conduction material ensures faster heat conductivity and pollution-free product, reduces adherent slag.
4.Resistance to corrosion:better anti-corrosion than normal clay-crucible.
5.Resistance to oxidation: advanced process dramatically improves its oxidation resistance, which ensures persistent heat conductivity and long working lifetime.
6.High-strength: high-density body and logical structure make the product better compression property.
7.Eco-friendly: energy-efficient and pollution-free, not only ensure metal product purity, but also ensure sustainable development on environment.
8.Multi-function: Can be used in induction graphite crucible furnace.
Physicochemical Properties of silicon nitride crucible
The crucible is an utensil or melting tank vessels that is made of refractory material (such as clay, graphite, quartz or difficult molten metal iron, etc.).
Graphite crucible, with is special advantages and Plasticity, is widely used in the smelting area, e.g. gold smelting, silver smelting, aluminum smelting, cooper smelting, etc.
high pure graphite crucible
| Item | Unit | baked twice | baked three time | baked four times |
| impregnated once | impregnated twice | impregnated three times | ||
| grain size | mm | ≤325μm | ≤325μm | ≤325μm |
| Bulk density | g/cm3 | ≥1.68 | ≥1.78 | ≥1.85 |
| Specific resistance | μΩ.m | ≤14 | ≤14 | ≤13 |
| Bending strength | Mpa | ≥25 | ≥40 | ≥45 |
| Compressive strength | Mpa | ≥50 | ≥60 | ≥65 |
| Ash content | % | ≤0.15 | ≤0.1 | ≤0.05 |
Fine-grain specialty graphite crucible
| Item | Unit | Guarantee value | Typical value | Guarantee value | Typical value |
| Max grain size | mm | 0.8 | 0.8 | 0.8 | 0.8 |
| Bulk density | g/cm3 | ≥1.70 | 1.73 | ≥1.73 | 1.76 |
| Specific resistance | μΩ.m | ≤8.5 | 7.5 | ≤8.0 | 7 |
| Bending strength | Mpa | ≥10.0 | 11 | ≥12.0 | 12.5 |
| Compressive strength | Mpa | ≥24.0 | 27 | ≥31.0 | 34 |
| Thermal Condcutivity | W/(m.k) | ≥120 | 150 | ≥130 | 160 |
| C.T.E.(100-600) °C | 10-6/°C | ≤2.5 | 2.2 | ≤2.5 | 2.1 |
| Ash content | % | ≤0.3 | 0.09 | ≤0.3 | 0.09 |
Size
| Top diameter | Bottom diameter | Height | Tolerance | Capacity(Kg5%) |
| 90 | 50 | 55 | 2 | 0.3 |
| 105 | 80 | 93 | 2 | 0.5 |
| 102 | 80 | 100 | 2 | 0.6 |
| 112 | 82 | 130 | 2 | 0.8 |
| 120 | 82 | 141 | 2 | 0.9 |
| 138 | 90 | 153 | 2 | 1.2 |
| 148 | 100 | 181 | 2 | 1.8 |
| 156 | 110 | 190 | 2 | 2.3 |
| 180 | 120 | 230 | 2 | 3 |
| 186 | 128 | 248 | 2 | 3.7 |
Si3N4 bonded SiC ceramic refractory material, is mixed with high pure SIC fine powder and Silicon powder, after slip casting course, reaction sintered under 1400~1500°C. During the sintering course, filling the high pure Nitrogen into the furnace, then the silicon will react with Nitrogen and generate Si3N4,So Si3N4 bonded SiC material is composed of silicon nitride (23%) and silicon carbide(75%) as main raw material,mixed with organic material,and shaped by mixture, extrusion or pouring,then made after drying and nitrogenization.
Si3N4 bonded SiC as a new type refractory material,is used widely.The applying temperature is 1400 C.It has better thermal stability,thermal shock,which is better than plain refractory material and recrystallized SiC.It also has antioxidation,high corrosion resistant,wear-resistance,high bending strength.It can resist corrosion and scouring,be no polluted and fast heat conduction in molten metal such as AL,Pb,Zn,Cu ect.
Package and Delivery
Our factory have more than 20 years production experience, specialized in manufacturing high-temperature heating elements with strict quality control system, advanced equipment, strong technique power and complete test facilities. At present, our various products have passed ISO9001:2008 quality system authentication and have been exported to more than 40 countries and regions.
If you need the silicon nitride crucible,please send inquiry to us.
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