Silicon Carbide Ceramics The Ultimate Material For High-Temperature Performance

Product Specification

Silicon Carbide Ceramic Hollow Flanged Cylinder (Industrial Grade High-Temperature Component)

Product Introduction
This product is manufactured using reaction-bonded silicon carbide ceramic, forming an integrally molded hollow flanged cylinder structure. It features a characteristic dark gray appearance, with a surface precision-ground to an industrial-grade smoothness of Ra ≤ 0.4µm. The unique hollow cylindrical design, combined with the base flange, ensures smooth fluid medium flow while providing a stable mounting and positioning surface. This structure fully leverages the performance advantages of silicon carbide material in extreme working conditions, making it an ideal solution for high-temperature, corrosive, and abrasive environments.

Core Advantages

• Exceptional Thermal Stability: Maintains structural integrity at temperatures up to 1380°C, with a thermal expansion coefficient of only 4.0×10⁻⁶/°C.

• Superior Wear Life: Rockwell hardness of HRA 90-93, offering wear resistance more than 7 times that of alumina ceramic.

• Excellent Corrosion Resistance: Resists most acid and alkali media (except hydrofluoric acid).

• Outstanding Mechanical Strength: Flexural strength ≥ 380 MPa, capable of withstanding working pressures up to 20 MPa.

• Lightweight Design: Density of only 3.02 g/cm³, approximately 60% lighter than metal components of the same size.

Primary Applications

• High-Temperature Bearing Systems: Drive bearings for semiconductor diffusion furnaces, guide bearings for vacuum furnaces.

• Chemical Sealing Fields: Mechanical seal rings, shaft sleeves for chemical pumps.

• Electronics Industry: Semiconductor process fixtures, wafer carriers.

• Environmental Protection Equipment: Guide components for flue gas purification units.

• New Energy Sector: Accessories for photovoltaic crystal pulling furnaces.

Specifications Table

Manufacturing Process
Raw Material Formulation → Isostatic Pressing → CNC Green Machining → High-Temperature Sintering → Non-Destructive Testing → Precision Machining → Laser Marking → Quality Inspection → Ultrasonic Cleaning → Vacuum Packaging.

Usage Instructions

1. Ensure the flange contact surface is clean and flat during installation; use dedicated tools recommended.

2. A thermal expansion gap of 0.1-0.3mm should be reserved when assembling with metal parts.

3. Fastening bolts should be tightened progressively in a diagonal pattern, with torque not exceeding 25 N·m.

4. A stepped preheating process (200°C/h) is recommended before the first high-temperature use.

5. Avoid direct contact with hydrofluoric acid and molten alkali metals.

After-Sales Service

• 12-month product quality guarantee.

• 24/7 technical support team response.

• Support for custom development based on drawings (Minimum Order Quantity: 50 pieces).

• Provision of material test reports and qualification certificates.

• Establishment of exclusive customer product files.

FAQ

1. Q: What are the advantages compared to alumina ceramic?
   A: 5 times higher thermal conductivity, over 7 times better wear resistance, and 400°C higher thermal shock resistance.

2. Q: Do you support custom non-standard sizes?
   A: Yes, fully supported. Detailed drawings and technical requirements are needed.

3. Q: What is the maximum processable size?
   A: Currently, flanged cylinders with a maximum outer diameter of 300mm and height of 500mm can be processed.

4. Q: What is the delivery lead time?
   A: 15 working days for standard specifications, 30-45 working days for custom products.