Alumina Ceramic Crucible For Glass Melting Experiment
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Advantages of alumina ceramic crucible for glass melting experiment
1. Alumina ceramic crucible easy to clean and keep clean.Easy to clean after dyeing.
2. Alumina ceramic crucible porcelain hole is very few, water absorption rate is very low.The solution is stored in sealed ceramic crucible to prevent the evaporation, penetration and invasion of foreign bacteria.
3. Alumina ceramic crucible stable chemical properties, durable.This point is better than copper, iron, aluminum and other metal products.
4. Alimina ceramic crucible has a certain acid, alkali, salt and atmospheric carbonate gas erosion ability, not easy to react with these substances, not easy to rust aging.
5. good thermal stability, slow heat transfer.Alumina ceramic crucible has a certain temperature change under the rapid cooling and rapid heat is not easy to crack performance, better than glass, is a bad conductor of heat, heat conduction is slow, used for holding boiling water or hot solution, it is not easy to hot hands.
Applications of alumina ceramic crucible for glass melting experiment
1. Alumina ceramic crucibles are used for high-temperature melting and casting.
2. Alumina ceramic crucibles are used for chemical synthesis and reaction vessels.
3. Alumina ceramic crucible are used for thermal analysis and calorimetry.
4. Alumina ceramic crucible are used for powder calcination and sintering.
5. Alumina ceramic crucible are used for metal alloying and sample preparation.
6. Alumina ceramic crucible are used for catalyst preparation and testing.
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.
Size,Performance index
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 |
Our 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's main products are: alumina ceramic tubes, alumina ceramic crucibles, alumina ceramic rods, alumina ceramic boats, alumina ceramic plates, alumina ceramic parts, etc.
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.
FAQ
A1. Used as a material for industrial furnaces due to its ability to maintain its hardness at high temperatures. Used as a protector for high-temperature thermal couples. Used as a material for the chemical industry due to its high corrosion resistance.
A2. Alumina crucibles are inert in hydrogen and carbonaceous atmospheres and offers high resistance to alkalies and other fluxes. Suitable for glass melting, including borosilicate glass.
A3. Alumina ceramic could withstand higher temperature, application in industry furnace. 2.As the wear resistance for zirconia is much better, it is frequently used as mortar and pestles, grinding jars.
Certificates
Feedback
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