Cylindrical silicon carbide ceramic shaft

In the process of modern industrial development towards high efficiency, high reliability, and long lifespan, traditional metal materials have gradually become unable to meet the application needs under extreme working conditions. Cylindrical silicon carbide ceramic shafts have emerged as a key component for solving pain points in many industries due to their excellent material properties.
Cylindrical silicon carbide ceramic shaft is a precision ceramic component made of high-purity and ultrafine silicon carbide powder through advanced pressureless sintering or reaction sintering processes. It is not a metal, but it possesses outstanding performance that surpasses the vast majority of metals and alloys, representing the top level of high-performance structural ceramics.

Avantages du matériau de base :
Dureté et résistance à l'usure extrêmement élevées : The hardness of silicon carbide is second only to diamond and cubic boron nitride, with a Rockwell hardness (HRA) of over 90. This means that it can effectively resist particle wear, adhesive wear, and corrosive wear, and its service life is several times or even tens of times longer than traditional high-speed steel and hard alloy shafts.
Excellente résistance à la corrosion : Silicon carbide has extremely high chemical inertness and can withstand the corrosion of most strong acids (such as hydrochloric acid, sulfuric acid, nitric acid), strong bases, and various organic solvents, perfectly solving the problem of metal shafts rusting and being corroded in corrosive media.
Excellente stabilité à haute température : Even in inert atmospheres up to 1600 ° C or air at 1400 ° C, silicon carbide can still maintain its strength and hardness without softening, deformation, or oxidation, ensuring stable operation in high-temperature environments.
Low density and high stiffness: The density of silicon carbide is only about 3.1g/cm ³, which is about 40% of that of steel. The lightweight feature effectively reduces the moment of inertia of rotating components, while its high elastic modulus ensures the dynamic stability and accuracy of the shaft during high-speed operation.
Extremely low friction coefficient and self-lubricating properties: When silicon carbide is paired with itself or other materials, its friction coefficient is extremely low, especially in fluid media, which can significantly reduce operating torque and energy loss.

What key problems can the product solve?
The emergence of cylindrical silicon carbide ceramic shafts aims to solve a series of failure problems of traditional shaft components under harsh working conditions:

1. Solve the problem of rapid wear and short lifespan:
   Traditional dilemma: When transporting slurries or powders containing hard particles or in high load friction environments, metal shafts wear rapidly and require frequent shutdowns for replacement, affecting production continuity and increasing maintenance costs.
   Our solution: The extremely high hardness and wear resistance of silicon carbide ceramic shafts result in minimal wear under the same working conditions, significantly extending the equipment’s overhaul cycle and service life.
2. Solve the problem of corrosion and contamination of products:
   Traditional dilemma: In industries such as chemical, electroplating, and pharmaceuticals, metal shafts are easily corroded by process media, and the resulting rust products can contaminate products, affect purity and quality, and even lead to the scrapping of entire batches of products.
   Our solution: The excellent corrosion resistance of silicon carbide ceramic shafts ensures no pollution when in contact with the medium, guaranteeing the ultra-high purity of the product and the cleanliness of the production process.
3. Solve the problem of deformation and instability at high temperatures:
   Traditional dilemma: In high-temperature furnaces, heat treatment equipment, or aerospace fields, metal shafts can soften and creep at high temperatures, leading to loss of accuracy, increased vibration, and even jamming and failure.
   Our solution: The excellent high-temperature stability of silicon carbide ceramic shafts ensures that they remain “rock solid” even in a red hot state, guaranteeing the reliability and accuracy of high-temperature transmission systems.
4. Solve the problem of high-speed dynamic balancing and energy consumption:
   Traditional dilemma: For high-speed pumps, centrifuges, and other equipment, metal shafts have high density, high centrifugal force during high-speed operation, extremely high requirements for dynamic balance, and high energy consumption.
   Our solution: The low-density characteristics of silicon carbide ceramic shafts reduce the moment of inertia, making it easier to achieve dynamic balance at high speeds and running more smoothly. At the same time, it helps to reduce driving power and save energy.

Principaux domaines d'application
Based on the excellent problem-solving ability mentioned above, cylindrical silicon carbide ceramic shafts have been widely used in the following key fields:
Chemical and petrochemical industries: used for centrifugal pumps, metering pumps, mixers, mechanical seal rings, etc., to transport corrosive media and granular slurries.
Semiconductors and photovoltaics: As key transmission components such as CMP equipment, wafer transfer robots, and diffusion furnaces, they ensure an ultra clean and metal ion free production environment.
Environmental Protection and Water Treatment: As the main shaft in desulfurization pumps, sewage pumps, and mortar pumps, it is resistant to wear and corrosion.
Aerospace: Used for high-speed, high-temperature transmission systems such as high-temperature sensors and turbopumps.
Research and high-end equipment: applied to high-precision instruments, vacuum environments, high-temperature furnace transmission systems, etc.
Garniture mécanique : Paired with materials such as graphite and hard alloy, it serves as a rotating ring for high-performance mechanical seals, providing an ultra long sealing life.

Service personnalisé
We are well aware that the requirements for shaft components vary greatly in different application scenarios. Therefore, we provide comprehensive and highly flexible customized services to ensure that you receive the most suitable solution.
Personnalisation de la taille :
We can accurately process cylindrical shafts of any diameter (from a few millimeters to hundreds of millimeters) and length according to your drawings.
Support the design and manufacturing of complex structures such as stepped shafts, hollow shafts, and irregular shafts.
Personnalisation de précision :
We can provide dimensional and positional tolerance control from μ m to the highest nanometer level, ensuring a perfect fit with your equipment.
Provide ultra precision grinding and polishing services to achieve extremely low surface roughness (Ra up to 0.01 μ m) to meet the ultimate requirements for friction and cleanliness.
Personnalisation des performances :
Material grade selection: We offer silicon carbide with different sintering processes (pressureless sintering/reactive sintering) to meet your specific needs for strength, toughness, thermal conductivity, and electrical conductivity.
Traitement de surface : Special coatings or surface treatments can be provided as needed to further enhance specific performance.

Choosing our cylindrical silicon carbide ceramic shaft is not only about selecting a component, but also about choosing a long-term partnership that enhances equipment performance, reliability, and overall benefits. Feel free to contact us anytime to discuss your specific needs.

Brudeze Ceramics fournit et vend une large gamme de verre de quartz de haute qualité, y compris des céramiques d'alumine, des céramiques de zircone, des céramiques de nitrure de silicium, des céramiques de nitrure d'aluminium, des céramiques de carbure de silicium, des céramiques de carbure de bore, des biocéramiques, des céramiques usinables, etc. Nous pouvons répondre aux exigences de personnalisation de divers produits céramiques.