Products

DESCRIPTION

• Overview
• Product Overview
• Detailed Photos
• Typical Applications
• Manufacturing Process
• Customization Service

Overview

Basic Info.

Model NO.	AL2O3
Purity	95% / 99% / 99.5% / 99.7%+ (Customizable)
Type	Ceramic Plate
Material Composition	Aluminum Oxide (Al2O3)
Vickers Hardness	1200-1800+ Hv
Mohs Hardness	Grade 9
Flexural Strength	300-400+ MPa
Max Service Temperature	1350°C~1600°C
Density	3.6~3.9 G/Cm³
Surface Roughness	Ra ≤ 0.2 μm
Dimensional Tolerance	±0.01~ ±0.05 mm (Customizable)
Color	Standard White (Gray Customizable)
Core Performance	Wear Resistant, Corrosion Resistant, High Temperat
Application Scenarios	Customizable Per Drawings/Samples (Size, Purity, S
Customization Service	Customizable Per Drawings/Samples (Size, Purity, S
Service Life	5~10 Times Longer Than Metal Rings
Transport Package	Carton
Specification	Customizable
Trademark	Licheng
Origin	China
HS Code	6914100000
Production Capacity	3000 Pieces/Month

Packaging & Delivery

Package Size2.00cm * 2.00cm * 0.30cm Package Gross Weight0.100kg

Product Description

Fixed-Type Ceramic Ball Valves for Pneumatic Conveying with Hardness HRC90

• Superior Wear Resistance: With Mohs hardness up to 9 (second only to diamond and SiC), it is 200+ times more wear-resistant than manganese steel and 170+ times than high-chromium cast iron. It can withstand long-term friction from slurries, powders, and particle flows without deformation or damage.

• Excellent Corrosion & High-Temperature Stability: Resistant to most acids, alkalis, and chemical reagents, it maintains stable performance in corrosive working conditions. It can work continuously at temperatures up to 1350-1600°C (depending on purity grade), avoiding failure caused by oxidation or rust.

• Low Friction & Maintenance-Free: Features a smooth surface with low friction coefficient, suitable for dry-running mechanical seals and rotating components. No additional lubrication is required, reducing maintenance workload and avoiding contamination risks in precision equipment.

• High Precision & Electrical Insulation: Manufactured with precision machining technology, ensuring tight dimensional tolerances (up to ±0.01 mm) and excellent flatness/parallelism. It also has outstanding electrical insulation properties (ρ>1014 Ω·cm), ideal for electrical mechanical components to prevent arcing.

• Cost-Effective & Durable: Long service life (5-10 times longer than metal rings) significantly reduces the frequency of component replacement and downtime, bringing long-term economic benefits to your production.

Material Specifications & Technical Parameter Additional Parameters: Surface Roughness: Ra ≤0.2 μm; Dimensional Tolerance: ±0.01-±0.05 mm (customizable); Color: White (standard), gray (customizable).

Our alumina ceramic rings are widely used in various mechanical equipment and industrial fields, especially in harsh working conditions requiring wear, corrosion, and high-temperature resistance:

• Mechanical Seals: Stationary and rotating seal rings for pumps, mixers, compressors, and agitators in chemical, mining, water treatment, and petroleum industries.

• Bearings & Bushings: Radial bearings, thrust washers, valve stem guides, and sliding sleeves in high-speed, high-temperature, or low-lubrication machinery.

• Pipelines & Pumps: Liner rings, wear sleeves, impeller rings, and flange rings in slurry pipelines, power plant coal powder pipes, and chemical delivery pipelines.

• Automotive & Industrial Valves: Seat rings, guide rings, and valve cores for high-pressure, high-temperature valves in automotive, metallurgy, and power generation industries.

• Other Fields: Precision instruments, semiconductor equipment, aerospace components, and medical machinery (high-purity grade).

1. Powder Preparation: Select high-purity Al2O3 powder, add special additives to optimize flowability and sintering performance, and grind to uniform fineness.
2. Forming: Adopt isostatic pressing (for uniform density) or dry pressing (for standard sizes) to form the blank according to custom drawings.
3. Sintering: Sinter at 1600-1850°C (adjusted by purity grade); use pressure-assisted sintering for high-purity grades to achieve ultra-fine grain and high density.
4. Precision Machining: Use diamond tools for turning, grinding, lapping, and polishing to meet tight dimensional tolerances and surface roughness requirements.
5. Quality Inspection: Conduct strict inspections (dimensional measurement, hardness test, density test, crack detection, and chemical composition analysis) to ensure product qualification.

We provide full customization to meet your specific application needs:

• Purity Grade: Customize 95%-99.9% Al2O3 grade according to your working environment.

• Dimensions: Customize inner diameter, outer diameter, thickness, and shape (ring, washer, sleeve) according to your drawings or samples.

• Surface Treatment: Customize surface roughness, polishing level, and chamfer design.

• Special Requirements: Provide corrosion-resistant, high-temperature-resistant, or high-precision customization for special industries (semiconductor, aerospace, etc.).

Quality Assurance & After-Sales Service

• Quality Control: We have a complete quality management system, and all products pass strict inspection before delivery.

• Warranty: Provide 12-month warranty for non-human damage; if there is any quality problem, we will provide replacement or refund.

• Technical Support: Our professional engineering team provides technical consultation, installation guidance, and solution design for your application.

• Delivery Time: Standard products: 3-7 days; Custom products: 7-15 days (depending on order quantity and complexity).

Product Overview Our industrial ceramic valve parts are high-performance core components for industrial valves, crafted from high-purity alumina (Al₂O₃), zirconia (ZrO₂) or silicon nitride (Si₃N₄) ceramic materials. Adopting advanced precision forming, high-temperature sintering and ultra-precision machining technologies, the valve parts feature excellent wear resistance, corrosion resistance and high temperature resistance, perfectly adapting to the harsh working conditions of industrial pipelines and valve systems. Applications: Specialized for industrial valves in chemical, petroleum, water treatment, metallurgy, power, mining and other industries, including valve cores, valve seats, valve discs, valve stems and other valve components, suitable for controlling and regulating corrosive, high-temperature and high-pressure media. Key Advantages: Super wear resistance (200+ times that of metal valve parts), excellent corrosion resistance (resistant to most acids, alkalis and chemical media), high temperature resistance (up to 1600°C), high pressure resistance, good sealing performance, low friction coefficient, no deformation, long service life, and customizable size and structure according to valve specifications.
Core Advantages Detailed Photos

Al2O3 Purity Grade	Hardness (HV)	Flexural Strength (MPa)	Max Service Temperature (°C)	Density (g/cm³)	Typical Application
95%	1200-1400	300-350	~1350	3.6-3.7	General industrial wear parts, seals, bushings (cost-effective option)
99% / 99.5%	1600-1800	350-400	~1500	3.7-3.8	High-precision mechanical seals, high-temp bearings, corrosive environments
99.7%+ (High Purity)	1800+	400+	1600 (short term)	3.8-3.9	Semiconductor, aerospace, ultra-high vacuum applications

Typical Applications

Manufacturing Process Customization Service