Silicon Carbide Roller with Higher Performance
- Operate stably in a high temperature environment above 1600℃
- High strength and not easy to deform
- Excellent thermal shock resistance and stability
- Straightness 0.5~0.8‰
- Reduced maintenance costs
Various Materials of Silicon Carbide Roller
There are various types of silicon carbide that used to make SiC ceramic rollers.
Suitable for roller kilns with rapid heating, and strong resistance to thermal shock.
Used in lithium battery positive electrode sintering furnace. High temperature resistant.
Stable at 1400~1550℃, suitable for sintering high-end ceramics and magnetic materials.
High density, excellent corrosion resistance, suitable for harsh environments.
Silicon Carbide Roller for Ceramic Industry
Silicon carbide kiln furniture is mainly used in the ceramic industry. You choose the following products at the same time to improve the kiln production capacity.
Silicon Carbide Cooling PipeUsed in the cooling stage of ceramic products after firing.
Used in daily-use and sanitary porcelain. High bearing capacity.
Has strong adaptability in the kiln and can increase the loading capacity.
Widely used, efficient heat transfer and energy saving in the furnace.
Why Choose Newthink Silicon Carbide Roller?
In the field of high-temperature industrial production, the stable operation and efficient output of equipment are inseparable from high-quality core components. Newthink silicon carbide rollers have become the ideal choice for many industries with their cutting-edge technology and excellent quality.
Using high-purity silicon carbide raw materials, combined with the independently developed formula system, Newthink ensure the dimensional accuracy of the rollers through precision molding technology. The straightness can reach 0.5‰.
Relying on leading ceramic processing technology, the diameter tolerance can be controlled between ±0.1mm and ±0.5mm.
Lean production is implemented in the workshop, with high yield and great production cost advantages.
Through ISO certification, we strictly control each process to ensure stable and reliable product quality.
There are sufficient conventional size molds, and small batch orders can be shipped within 15 days at the earliest.
Large-sized silicon carbide products are packed in plywood or solid wooden boxes, which contain foam boards and padding. Small-sized ones are packed in paper-plastic sealed packaging, or customized shock-proof and drop-resistant packaging with a foam protective layer inside.
Silicon Carbide Roller Workshop
With 14 years of experience in advanced ceramic production, Newthink produces Silicon Carbide Rollers using automatic forming lines, pressureless sintering furnaces, advanced grinding machines, and precision inspection tools. Newthink ensure consistent quality and dimensional accuracy of our advanced ceramic products.
Regular Sizes of SiSiC Roller
Regular outer diameters are 25, 30, 40, 45, 50, 55, 60, 65; lengths are 2 meters to 4.5 meters; wall thickness is 4-6 mm.
Straightness is 0.5-1‰, and ovality is ≤0.1 mm.
Process fillets, slotting and drilling, and inner and outer diameter processing at both ends are allowed. Special specifications can be determined by negotiation between the supply and demand parties.
Resource
Download detailed product specifications, technical data and more. Access all the information you need.
Different Types of Silicon Carbide Tube
Due to different preparation processes and usage requirements, silicon carbide rollers mainly have the following types.
- Parameter
| Item | Unit | Data | |||
| SiSiC | NBSiC | SSiC | RSiC | ||
| Max service temperature | ℃ | 1380 | 1450 | 1650 | 1620 |
| Density | g/cm3 | 3.02 | 2.75-2.85 | 3.08-3.16 | 2.65-2.75 |
| Open porosity | % | 0 | 13-15 | 0 | 15-18 |
| Bending strength 20℃ | Mpa | 250 | 160 | 380 | 100 |
| Bending strength 1200℃ | Mpa | 280 | 180 | 400 | 120 |
| Modulus of elasticity 20℃ | Gpa | 330 | 580 | 420 | 240 |
| Modulus of elasticity 1200℃ | Gpa | 300 | / | / | 200 |
| Thermal conductivity 1200℃ | W/m.k | 45 | 19.6 | 100-120 | 36.6 |
| Coefficient of thermal expansion | K-1x10-6 | 4.5 | 4.7 | 4.1 | 4.69 |
| HV | kg/mm2 | 2115 | / | 2800 | / |
Related Products
Alumina RollerMade of high-purity Al₂O₃, resistant to high temperatures (≤1600℃) and corrosion.
Ceramic RollerMade of various ceramic materials (such as silicon carbide, alumina, etc.).
Alumina BarOften used for thermocouple protection or laboratory equipment.
Ceramic BarMade of non-metallic inorganic materials (such as alumina, SiC, mullite, etc.), widely used.
Quality Inspection Steps for Silicon Carbide Rollers
- Appearance inspection: Focus on observing the roller surface and both ends to see if there are cracks, pores, impurities, peeling, etc.
- Dimensional accuracy inspection: Diameter and straightness, use a micrometer/caliper to measure the roller diameter (tolerance is usually ±0.5mm), straightness ≤0.1mm/m (laser detector); coaxiality and roundness, ensure that the roller has no bending or elliptical deformation; length and end surface flatness: avoid stress concentration during installation.
- Bending strength (three-point bending test): room temperature strength ≥150MPa (reaction sintering) or ≥200MPa (recrystallization).
- Thermal shock test: rapid cooling and heating cycles (such as 1100℃→room temperature water quenching), check for cracking.
- Dynamic balance test (applicable to high-speed kilns): rotate the roller at a low speed (such as 30~60rpm), detect the vibration amplitude, and avoid eccentric wear during operation in the kiln.
Silicon carbide rollers are the basis of high-temperature kilns, and are mainly used for high-temperature sintering and transmission in industries of ceramic, photovoltaic, lithium battery, and glass. They have a high temperature resistance (up to 1600°C), oxidation resistance, high load-carrying capacity, and are mainly used for replacing metal and ceramic rollers in the traditional manner.
Professional personnel are needed to install and operate smoothly silicon carbide ceramic pipes in the kiln so that the kiln temperature rises and falls smoothly, avoiding sudden heating, cooling, mechanical shock, and local overloading. Professional personnel are also needed to clean surface impurities regularly to prolong service life.
Silicon carbide rollers are able to withstand a maximum temperature of 1600°C and may have a short-time support of 1800°C depending on the manufacturing process as well as the operation mode of the kiln. It is recommended that the temperature should be ≤1400°C for extended use in an oxidizing atmosphere.
To select a reliable silicon carbide bar supplier, you should fully take into account its qualification certificate, manufacturing process, customer cases, test reports, customization capability, price benefit and after-sales service. Give top priority to NEWTHINK, our company has many years’ experience in manufacturing and exporting silicon carbide kiln furniture industry, and can provide on-site factory inspection and free samples to meet domestic and foreign customers as much as possible.
Silicon carbide roller has higher strength, better heat transfer efficiency and a longer service life than alumina and cordierite one. SiC rollers maintain nearly all strength and stiffness while resisting bending or deformation at working temperatures over 1400℃. On the other hand, alumina and cordierite would deform or soften at that temperature. SiC rollers can also endure rapid heating and cooling cycles without the risk of cracking.
In industrial practice, SiC rollers will last multiple times longer than alumina or cordierite rollers because of their high hardness and low wear. Their reduced weight and thickness lowers the load on a kiln’s drives and improves energy efficiency.
Silicon carbide is brittle and will crack if the rollers are not installed properly, such as misaligned holes, tight fits or impact.
Rapid temperature change is the most common cause. This usually happens during startup or shutdown of the kiln, where internal thermal stress occurs and transverse fractures develop.
Rollers can become damaged if they are exposed to prolonged high temperatures or reactive vapors from various alkalis, metals or salts. These reactive vapors can erode and weaken the roller over time.
A roller in continuous service above the design limit will accelerate the oxidation and aging process.
Yes. Silicon carbide rollers allow for customization of size, shape, material type and surface treatment. Rollers can be designed in precise diameters, lengths and wall thicknesses to fit your kiln width and load capacity. In addition, specific profiles such as square, oval or hollow, lightweight designs can be incorporated to improve energy efficiency and decrease heat storage. With drawings, temperature and load details, NKM will provide rollers designed specifically for your kiln.
