Alumina Refractory Ceramic Crucible
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Advantages of Alumina Refractory Ceramic Crucible
1. Alumina refractory ceramic crucibles crafted from high-purity alumina.
2. Alumina refractory ceramic crucibles offering exceptional thermal stability and chemical resistance.
3. Characterized by their robustness and durability, alumina refractory ceramic crucibles withstand extreme temperatures.
4. The chemical inertness of alumina refractory ceramic crucibles ensures minimal contamination, preserving the purity of the materials being processed.
5. Alumina refractory ceramic crucibles exhibit high mechanical strength.
6. Alumina refractory ceramic crucibles play a vital role in experimentation, offering a reliable vessel for conducting reactions at elevated temperatures.
Application of Alumina Refractory Ceramic Crucible
1. Alumina Refractory Ceramic Crucible is used for the analysis and melting of various laboratory metal and non-metal samples.
2. Alumina Refractory Ceramic Crucible is used in shuttle kilns and push plate kilns for firing pigments, colorants, glass materials, pigments, luminescent materials, etc.
3. Alumina Refractory Ceramic Crucible is used for adjusting the formula of small experimental kilns and experimental electric furnaces.
4. Alumina Refractory Ceramic Crucible is used for the analysis and firing of mineral raw materials such as molten metals, precious metals, optical glasses, rare earths, etc,
5. Alumina Refractory Ceramic Crucible is used for firing high-temperature products such as ceramic powders.
How to use alumina refractory ceramic crucible correctly
1. In our forging and experimental processes, alumina refractory ceramic crucible are commonly used equipment. In order to ensure the normal use of the product, it is necessary to master the correct usage method. Below is a brief introduction.
2. When there is a solid to be heated with high heat, use a crucible. When using alumina refractory ceramic crucible, the crucible cover is usually placed diagonally on the crucible to prevent heated objects from jumping out and allow air to freely enter and exit for possible oxidation reactions. The crucible, due to its small bottom, usually needs to be placed on a mud triangle to be heated directly by fire. The crucible can be placed directly or diagonally on an iron tripod, and can be placed on its own according to experimental needs.
3. After heating, do not immediately place the alumina refractory ceramic crucible on a cold metal tabletop to prevent it from cracking due to rapid cooling. It should not be placed immediately on wooden tabletops to prevent scalding or fire. The correct approach is to leave it on an iron tripod for natural cooling, or place it on an asbestos mesh to allow it to cool slowly. Please use crucible pliers for the retrieval of the crucible.
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
Q1. What is a alumina refractory ceramic crucibles?
A: Alumina refractory ceramic crucibles is a container made of aluminum oxide undefined material, designed to withstand extremely high temperatures and used for melting and holding molten materials.
Q2. What are the advantages of using a alumina refractory ceramic crucibles?
A: Alumina refractory ceramic crucibles offer excellent thermal shock resistance, excellent undefined resistance, and excellent thermal insulation. They are as wel non-reactive, non-toxic, and non-porous.
Q3. What types of materials can be melted in a alumina refractory ceramic crucibles?
A: Alumina refractory ceramic crucibles can be used to melt metals, alloys.
Q4. What are the dimensions of a alumina refractory ceramic crucibles?
A: Alumina refractory ceramic crucibles come in a variety of sizes, ranging from 10ml to 1000ml.
Certificates
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