Industrial Alumina Ceramic Crucible
- yunxing
- china
- According to the quantity of the product
- 2000-5000/month(Looking for distributors)
A. Alumina crucible is a ceramic product with high thermal conductivity, compressive strength and thermal shock resistance. B. Has low thermal expansion.
C. Has high hardness and good wear resistance.
D. When used at high temperature, it will not pollute most of the molten metal.
Industrial Alumina Ceramic Crucible
My factory looking for distributors.
Alumina crucible is a ceramic product with high thermal conductivity, compressive strength, and thermal shock resistance. It also has a low thermal expansion, making it a suitable material for furnace use in the crucible, tube, and thermocouple sheath form. Alumina has high hardness and good wear resistance, making it a suitable material for ball valves, piston pumps, and deep drawing tools. In addition, it can be easily combined with metals and other ceramic materials using brazing techniques and metalizing. Alumina crucibles can be used under high temperature and do not contaminate most molten metals.
All products through the German DIN standards: DIN43724 / DIN43725 / DIN40680
The alumina ceramic crucible is composed of porous alumina and has strong melting resistance.
The alumina ceramic crucible is suitable for melting samples with anhydrate Na2C03 and other weak base materials as flux, but not suitable for melting samples with Na202, NaOH and other strong base materials and acidic materials (such as K2S 207, etc.) as flux.
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 | Cold compressive strength | MPa | 350 |
6 | 20ºC leakage rates | Torr・L/sec | >10-11=1.33322×10-12Pa・m3/sec |
7 | Twisting in high temperature | mm | 0.2 allowed in 1600ºC |
8 | Bonding in high temperature | not bonded in 1600ºC | |
9 | 20-1000ºC coefficient ofthermalexpansion | mm.10-6/ºC.m | 8.2 |
10 | Thermal conductivity | W/m.k | 25 |
11 | Electric insulation strength | KV/mm | 20 |
12 | 20ºCdirect current insulation resistance | Ohm/cm | 1014 |
13 | High-temperature insulation resistance | 1000ºC MΩ | ≥0.08 |
1300ºC MΩ | ≥0.02 | ||
14 | Thermal shock resistance | 4 times not cracked in 1550ºC | |
15 | Maximum working temperature | ºC | 1800 |
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 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
1. Monthly Capacity: 50,000-60,000 pcs;
2. Material: Alumina ceramic
3. Lead time: pls confirm the quantities required;
4. Incoterm: FOB, CFR, CIF;
5. Delivery Cost: It is determinated by the destination port;
6. Payment Term: PayPal; T/T;
7. Shipment: by sea, by air, by courier, by post, etc.
8. We accept customization.
9.We have professional designers.
10.We have a professional after-sales department to answer your questions.
11.How do you clean alumina?
To clean a TGA alumina crucible, start by heating the high-temperature furnace to 800°C over a period of 6 hours. This will thermal decompose the nitrate in the crucible to prevent it from cracking. Once the temperature has been reached, let the crucible cool down naturally and then dry it off before use.
Feedback
1. If you have any questions or questions, please contact us and we will communicate with you as soon as possible.
2. For any other satisfaction, please also feedback to us to make our service better and better.
