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High Temperature Resistant Alumina Ceramic Flange Ring with Excellent Corrosion Resistance and High Dimensional Stability

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High Temperature Resistant Alumina Ceramic Flange Ring with Excellent Corrosion Resistance and High Dimensional Stability

Name: High Temperature Resistant Alumina Ceramic Flange Ring with Excellent Corrosion Resistance and High Dimensional Stability
Brand: Dayoo
Price: 1 USD

Material : ≥95% alumina powder

Place of Origin : Made In China，Zhejiang，Jinhua

Dielectric Constant : 9.8

Flexural Strength : 300 - 400 MPa

MOQ : As Negotiated and Agreed

Electrical Resistivity : 10^14 - 10^16 Ω·cm

Surface Finish : Polished

Chemical Composition : Al2O3 (Aluminum Oxide)

Density : ≥3.88g/cm³

Model Number : Depend on the Actual Product

Purity : 85% to 99.9%

Brand Name : Dayoo

Thermal Expansion Coefficient : 7 - 8 x 10^-6 /°C

Vickers Hardness : ≥1550HV

Certification : GB/T 19001-2016/ISO 9001:2015

Alumina Content : 95%

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Annular Step-type Alumina Ceramic Flange Ring | Precision Alumina Ceramic Ring Sealing Flange

Product Introduction

This annular step-type alumina ceramic flange ring is manufactured from high-purity alumina ceramic powder through dry pressing, high-temperature sintering and multiple precision grinding processes. Adopting concentric annular stepped structure, the product is equipped with evenly distributed mounting holes on the outer ring and clamping notches on the inner ring. It features high dimensional accuracy and excellent flatness. Possessing insulation, wear resistance, high-temperature resistance and chemical stability, it is a precision annular ceramic structural part specially used for high-end equipment.

Applications

Widely applied in semiconductor equipment, vacuum chambers, new energy automation equipment, high-voltage electrical installations and plasma equipment. It serves as insulating flange, sealing gasket, positioning support ring and vacuum isolation component for assembly positioning, electrical insulation, high-temperature sealing and wear-resistant support.

Core Advantages

Excellent Insulation Performance: High dielectric strength to isolate electric current and prevent electric leakage and static interference.
High Temperature & Corrosion Resistance: Stable under long-term high temperature, resistant to acid and alkali erosion with outstanding anti-aging property.
High Dimensional Stability: Tolerance of stepped surfaces and mounting holes can reach ±0.01mm. Superior flatness ensures tight sealing performance.
High Hardness & Wear Resistance: Hard surface will not easily produce dust under repeated friction and disassembly, maintaining clean working environment.

Specification Parameters

表格

Item	Parameter
Material	99% Alumina Ceramic
Density	≥3.88g/cm³
Vickers Hardness	≥1550HV
Continuous Working Temperature	≤1600℃
Dimensional Tolerance	±0.01mm
Surface Roughness	Ra≤0.8μm

Production Process

Raw Material Mixing & Granulation → Annular Mold Forming → High-Temperature Sintering at 1680℃ → Surface Grinding → Internal & External Diameter Precision Machining → Drilling of Positioning Holes → Notch Processing → Ultrasonic Cleaning → Full Dimensional Inspection → Clean Packaging

Instructions for Use

Clean the contact surface of the flange before assembly and remove particulate impurities to guarantee sealing effect.
Tighten bolts evenly to avoid concentrated pressure on single side which may cause ceramic cracking.
Prevent sharp thermal shock to reduce thermal stress damage.
Operate in clean environment and regularly clean surface contaminants.

After-sales Service

Customization of inner & outer diameter, step height and hole layout is available based on drawings or samples, sampling service provided. All products are fully inspected before delivery with test reports supplied. Return & exchange service is available for quality defects excluding man-made damage. Professional technical support for working condition selection.

FAQ

Q: Can alumina ceramic flange ring be used in vacuum sealing environment?

A: Precisely machined ceramic surface achieves high flatness. Matched with sealing gaskets, it can meet sealing requirements for vacuum chambers.

Q: Can the quantity and diameter of mounting holes be customized?

A: We support customization of hole diameter, hole quantity, ring thickness and step structure.

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