Specially Grooved Silicon Carbide Ceramic Flange - High Rigidity, High

Product Specification

Specially Grooved Silicon Carbide Ceramic Flange - High Rigidity, High-Temperature Precision Positioning & Connection Disc

Product Overview

This product is a high-performance Silicon Carbide Ceramic Flange manufactured using reaction bonding technology. Made from high-purity silicon carbide ceramic, it features a circular flange design with a precision-machined special-shaped central groove and five through-holes evenly distributed around the perimeter. Renowned for its exceptional mechanical properties and thermal stability, silicon carbide makes this flange an ideal solution for connection and positioning challenges in extreme environments involving high temperatures, corrosion, and severe wear. It is a critical component for enhancing the reliability and precision of high-end equipment.

Primary Applications

Thanks to its unique structural design and material properties, this product serves key functions in various fields:

• Precision Equipment Positioning: Used as a positioning disc or reference surface within high-temperature chambers of semiconductor equipment and precision measuring instruments, providing a stable and reliable datum.

• Mechanical Connection & Fixing: Serves as a high-temperature connection flange for joining ends of pumps, valves, and reaction vessels, resisting media corrosion and thermal deformation.

• Transmission System Components: Functions as a drive flange, mating with ceramic shafts for power transmission in high-temperature environments while maintaining high concentricity.

• Process Fixtures & Sagger Plates: Used as sagger plates or fixture bases in sintering furnaces for photovoltaics and lithium batteries, leveraging its high-temperature resistance and anti-creep properties.

Key Advantages

1. Super High Rigidity & Hardness: High elastic modulus ensures minimal deformation, guaranteeing极高的 (very high) positional accuracy and repeatability as a positioning element.

2. Extreme High-Temperature Resistance: Capable of long-term operation at temperatures up to 1550°C without softening or deforming, significantly outperforming metal flanges.

3. Excellent Thermal Shock Resistance: Withstands severe and rapid temperature changes without cracking, ensuring long service life during repeated equipment heating and cooling cycles.

4. Outstanding Chemical Stability: Offers excellent resistance to acidic, alkaline environments, and molten metals, making it suitable for a wide range of applications.

5. Low Coefficient of Thermal Expansion: Minimal dimensional change with temperature variation ensures stable fits and connections across a broad temperature range.

Specifications Table

Manufacturing Process Overview

The core process is Reaction Bonding: Mixing SiC micro-powder with carbon source → Mold pressing or Isostatic pressing (forming the green body with grooves/holes) → CNC precision grinding to near-net shape → High-temperature silicon infiltration reaction sintering → Precision grinding of surfaces and special groove → CMM inspection and hole verification → Cleaning and packaging.

Usage Instructions

1. Installation Preparation: Before installation, clean the flange and mating surfaces to ensure they are free of foreign objects. Check the fit clearance between the through-holes and bolts.

2. Fastening Procedure: During installation, use a torque wrench and tighten bolts evenly in a crisscross pattern to avoid excessive unilateral stress. Using high-temperature gaskets is recommended.

3. Material Pairing: Best performance is achieved when paired with high-strength, high-temperature materials like ceramics or Inconel alloys.

4. Maintenance Note: If sticking occurs during disassembly, do not force it with hammer blows. Try slightly heating the flange to utilize its low thermal expansion for separation.

After-Sales Service

We provide professional technical consultation and comprehensive after-sales support. The standard product warranty period is 12 months. We support custom non-standard designs (e.g., groove shape, hole diameter, number of holes). We can offer installation guidance and operational condition compatibility analysis for our customers.

Frequently Asked Questions (FAQ)

• Q: What is the main difference between a Silicon Carbide flange and a Zirconia flange?
  A: The main differences lie in thermal conductivity and temperature resistance. Silicon Carbide has excellent thermal conductivity, making it a great heat dissipation material, and its maximum use temperature (1550°C) is much higher than Zirconia (approx. 1100°C). However, Zirconia generally has higher fracture toughness at room temperature.

• Q: Can the central special-shaped groove be made into other non-standard shapes?
  A: Yes. With our strong CNC machining capabilities, we can customize various complex special-shaped grooves according to your drawings, such as D-shapes, squares, polygons, or specific spline grooves.

• Q: Will this flange disc gall or seize with connecting bolts at high temperatures?
  A: If directly connected with common metal bolts, there is a risk of diffusion bonding at extremely high temperatures. We strongly recommend using high-temperature alloy bolts配合 (combined with) specialized anti-galling coatings or ceramic washers for high-temperature applications.