Alumina Ceramic Crucible With Stern
- yunxing
- china
- According to the quantity ordered
- 2000-5000/month(Looking for distributors)
A. Used for various laboratory metal and non-metal sample analysis and melting materials.
B. Used in shuttle kilns, push-board kilns to burn color materials, colorants, frit, pigments, luminescent materials, etc.
C. Used for small experimental furnaces, experimental electric furnace adjustment formulas, etc.
Alumina Ceramic Crucible With Stern
My factory looking for distributors.
Aluminium oxide is a highly stable compound and highly resistant to corrosion from salts, alkalines and acids. It can be used in the manufacture of thermocouple protection tubes, boiler tubes, crucibles and fire retardant material.
All products through the German DIN standards: DIN43724 / DIN43725 / DIN40680
We only make high purity alumina ceramics
1. High-purity alumina content 99.3% -99.5%, other alumina ceramics 92% -99%.
2. The color of high purity alumina product is milky white, and other products are pink or white. The higher the purity, the more transparent the color.
3. Alumina is a refractory material, the higher the purity, the better the refractory effect.
4. After high-purity alumina ceramics are fired and cooled in a 1800-degree high-temperature kiln, the products are not easy to break when they encounter high temperatures. Other ceramics are fired at 1500 ℃ ~ 1800 ℃.
5. The volume density of high-purity alumina> 3.92 g / cm3 has a smooth surface and is not easily corroded by chemicals. The bulk density of other ceramics is> 3.70 g / cm3 ~> 3.85 g / cm3.
6. High purity alumina has good hardness and good wear resistance.
7. High purity alumina products have a longer service life.
Composition table
| NAME | CONTENT(%) |
| Al2O3 | 99.3-99.5(99.7) |
| SiO2 | 0.3-0.5 |
| CaO+MgO | 0.2-0.3 |
| K2O+Na2O | 0.2-0.35 |
| Fe2O3 | <0.1 |
| OTHER | <0.05 |
Alumina ceramic performance index (Notice of Correct in Leakeage Rate）
NO. | Property | Unit | Alumina |
1 | Al2O3 |
| >99.3 |
2 | SiO2 |
| — |
3 | Density | g/cm3 | 3.88 |
4 | Water absorption |
| 0.01 |
5 | Compressive strength | MPa | 2300 |
6 | 20℃ leakage rates | Torr・L/sec | >10-11=1.33322×10-12Pa・m3/sec |
7 | Twisting in high temperature | mm | 0.2 allowed in 1600℃ |
8 | Bonding in high temperature | not bonded in 1600℃ | |
9 |
20—1000℃ coefficient of thermal expansion |
mm.10-6 ／℃.m |
8.2 |
10 | Thermal conductivity | W/m.k | 25 |
11 | Electric insulation strength | KV/mm | 20 |
12 |
20℃direct current insulation resistance |
Ohm/cm |
1014 |
13 |
High-temperature insulation resistance | 1000℃ MΩ | ≥0.08 |
1300℃ MΩ | ≥0.02 | ||
14 | Thermal shock resistance | 4 times not cracked in 1550℃ | |
15 | Maximum working temperature | ℃ | 1800 |
16 | Hardness | Mohs | 9 |
17 | Flexural strength | Mpa | 350 |
Other dimensions, price reference table
| NUMBER | L*W*H*WT(MM) | SHAPE | PRICE($) |
| 1 | 30*20*15*δ2 | Rectangle | 0.87 |
| 2 | 45*13/11*9 | Boat shape with ears | 0.87 |
| 3 | 48*50/10 | Trapezoid | 5.8 |
| 4 | 50*10*10*δ2 | Rectangle | 0.87 |
| 5 | 80*50*7*δ1.5 | Rectangle | 1.74 |
| 6 | 80*55*15*δ2.5 | Rectangle | 2.18 |
| 7 | 84*13/11*8 | Boat shape with ears | 0.88 |
| 8 | 100*10*10*δ2 | Rectangle | 1.16 |
| 9 | 100*20*20*δ2 | Rectangle | 1.75 |
| 10 | 100*30*30*δ1.5 | Rectangle | 3.05 |
| 11 | 100*40*18*δ2 | Rectangle | 2.34 |
| 12 | 100*50*30*δ4 | Rectangle | 6.77 |
| 13 | 105*22*14*δ2 | Rectangle | 2.33 |
| 14 | 184*123*62*δ5 | Rectangle | 34.78 |
| 15 | 200*100*50*δ2 | Rectangle | 26.11 |
| 16 | 300*36*18*δ3 | Rectangle | 20 |
| 17 | 300*45/30*20*δ2 | Trapezoid | 11.75 |
Note: Alumina products are sensitive to thermal shock. Try to warm up the furnace chamber slowly. A heating rate between 150 ℃~300 ℃/hour is recommended for the first 1-1.5hours, so that the alumina products can be evenly heated to reduce the impact of thermal shock.
Factory:
Jinzhou Yunxing Industrial Ceramics Co., Ltd. was established in 2000, mainly producing various types of tubular ceramic products and various industrial parts with alumina content above 99.3%. The factory covers an area of 4000 square meters.
The company currently has 3 1800 ° C high-temperature furnaces and 2 1400 ° C low-temperature kilns independently designed and manufactured. The molding process is mainly based on grouting molding, and has other molding process equipment such as extrusion and hot die casting.
The company has 105 employees, including one senior ceramic engineer, three engineers, six overseas sales staff, and four professional after-sales staff.
Service:
