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What is a ceramic roller?
A ceramic roller is a long and thin ceramic cylinder with one or two openings on each end of the cylinder wall.
Introduction: They are used in roller kilns in the glass and ceramic industry. The main function of ceramic rollers is to transport ceramic or glass products. They are resistant to high temperatures and heat, and the surface of the rollers needs to be cleaned frequently. At present, the most widely used ceramic rollers are corundum rollers.
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Different types of ceramic rollers
| type | Performance characteristics |
|---|---|
| Cordierite-Mullite Roller | It has excellent thermal shock resistance, but its load softening temperature is low, and the maximum operating temperature is below 1300°C. |
| Fused Silica Rollers | It has a low coefficient of thermal expansion and excellent thermal shock resistance, but due to its low operating temperature, it is mostly used in glass annealing furnaces, vesaire. |
| Corundum-Mullite Roller | It has good high temperature performance, good fire resistance, excellent resistance to rapid cooling and heating, and can be used at temperatures up to 1400°C or even higher. It is inexpensive and is currently the most widely used roller. |
| Silicon carbide roller | It has high strength, İyi termal şok direnci, good high temperature creep resistance, and can be used at temperatures exceeding 1600°C in an oxidizing atmosphere. |
Kimyasal bileşim
| Kimyasal bileşim | effect |
|---|---|
| Al₂O₃ | Provides high strength and high temperature resistance |
| SiO₂ | Improve the heat resistance and chemical stability of materials |
| MgO | Improve the creep resistance and thermal shock resistance of materials |
| ZrO₂ | Enhance the toughness and thermal shock resistance of materials |
| CaO | Improve the sintering properties of materials |
Fiziksel özellikler
- Termal stabilite: reflects the roller’s resistance to rapid cooling and heating. Good thermal stability can increase the roller’s service life, thereby reducing the company’s production costs.
- Bending strength: Ceramic rollers mainly bear and transmit loads, and generally work under high temperature and load. Bending strength is an important indicator of ceramic rollers. To a certain extent, the higher the bending strength, the better.
- Water absorption: Water absorption is closely related to the density of the roller. The higher the roller is used under high temperature, the lower its water absorption is required.
- Refrakter: refers to the ability to resist high temperature without melting and softening when there is no load. High refractoriness indicates that the raw materials are of good purity and low impurity content, but refractoriness does not represent the maximum operating temperature of the roller. The operating temperature of the roller should be lower than its refractoriness.
- Straightness: reflects the straightness of the roller. It is an important manifestation of the quality of the roller. Rollers with unqualified straightness are prone to product deformation.
- Thermal expansion coefficient: For ceramic rollers, it is hoped that their thermal expansion coefficient is small, so that they are not easy to bend when the temperature changes greatly, ensuring the smooth progress of production.
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Üretim süreci
- Hammadde hazırlama: The selection and preparation of raw materials is the first step in the production of ceramic rollers
- Karıştırma: Mix the raw materials in a certain proportion
- Kalıplama: Use a molding machine to make the mixed raw materials into the required shape
- Sintering: Sinter at high temperature to make the ceramic roller achieve the required physical and chemical properties
- Finished product inspection: Perform quality inspection on the sintered ceramic roller to ensure that its performance meets the requirements
Which is better ceramic or titanium hot rollers?
| karakteristik | ceramic roller | titanium hot roller |
|---|---|---|
| Malzeme | Made of clay refractory raw materials and natural mineral raw materials | Mainly made of titanium alloy |
| Operating temperature | The temperature can reach 1300℃ to 1600℃ according to different materials | Typically suitable for high temperature environments |
| Advantages | Yüksek sıcaklık dayanımı, termal şok direnci, relatively low price | Yüksek sıcaklık dayanımı, yüksek mukavemet, hafif |
| Disadvantages | Easy to be corroded, poor decontamination ability, yüksek termal iletkenlik | – |
What is the use of ceramic roller?
Ceramic rollers are mainly used to transport ceramic or glass products.
Ceramic rollers are a new type of ceramic rods used in roller kilns in the glass and ceramics industry.
As a refractory kiln tool, ceramic rollers support and transport ceramic bodies and products in roller firing kilns and roller drying kilns, and are the core components of roller kilns.
Ceramic rollers have made important contributions to the energy saving, shortening of firing cycles and automated operation of roller kilns, and are therefore widely used in the fields of building sanitary ceramics, daily ceramics, elektronik seramik, manyetik malzemeler, glass heat treatment, wear-resistant devices, vesaire.
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