Product Overview
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Our flanged perforated alumina ceramic sleeve is manufactured from high purity 99% alumina ceramic material. This precision machined ceramic bushing features evenly distributed side holes and integrated flange structure, combining outstanding high temperature resistance, electrical insulation, ultra-low wear and excellent corrosion resistance. Widely customized and applied in industrial furnaces, welding equipment, semiconductor machinery, fluid transmission and precision automation equipment as insulating sleeves, guide nozzles and flow distribution bushings.
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Material Advantage
1:Extreme High Temperature Resistance
Working temperature up to 1600℃, stable performance under long-term high-temperature furnace environment, no deformation or cracking.
2:Superior Electrical Insulation
High volume resistivity, effectively isolate current, prevent electric leakage, ideal for electronic and welding insulation components.
3:Excellent Wear & Abrasion Resistance
Hardness close to sapphire, far higher than metal and plastic, long service life under continuous friction operation.
4:Strong Chemical Corrosion Resistance
Resist acid, alkali, molten metal erosion, not react with most chemical liquids and high-temperature molten materials.
5:Low Thermal Expansion & High Thermal Conductivity
Stable dimensional accuracy under temperature fluctuation, fast heat dissipation to avoid component overheating failure.
6:Smooth Dense Surface
Polished ceramic inner & outer wall, low friction coefficient, no material adhesion during working.
Product Feature
1:Integrated flange design: Easy installation, fixed positioning without extra fixtures
2:Multi-hole perforated structure: Uniform gas/liquid circulation, balanced internal pressure
3:Precision CNC machined: Strict tolerance control for inner diameter, outer diameter, hole position and flange size
4:Uniform white dense alumina body: No pores, no impurities, consistent batch quality
5:Customizable size: Support custom inner/outer diameter, height, hole quantity, hole diameter and flange thickness
Application
- Industrial High-temperature Furnace: Heating zone insulation sleeves, gas circulation guide tubes
- Welding & Cutting Equipment: Welding gun insulating nozzles, arc isolation ceramic bushings
- Semiconductor & Electronic Industry: Insulating guide sleeves for precision automated machines
- Fluid & Gas Delivery Equipment: Flow distribution ceramic sleeves, filter guide tubes
- Textile Machinery: High-speed yarn guide ceramic bushings
- Laboratory High-temperature Instrument: Corrosion-resistant ceramic fixture sleeves
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Thermal Conductivity @ 20°C
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Thermal Expansion a at 20–400°C
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Properties
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Unit
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95%Al2O3
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99%Al2O3
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99.5%Al2O3
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Dielectric Constant
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1MHz
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9.4
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9.9
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9.9
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Dielectric Strength
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V/m
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15 x 10 6
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15 x 10 6
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15 x 10 6
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Dielectric Loss
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1MHz
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4 x 10 -4
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4 x 10 -4
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4 x 10 -4
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Volume Resistivity @ 25°C
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Ω・cm
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>10 14
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>10 14
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>10 14
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Volume Resistivity @ 500°C
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Ω・cm
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>10 8
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>10 8
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>10 10
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Various Types of Alumina Ceramic Part
We Can Do OEM and 0BM According to Your Drawing and Requirements.
Features of alumina ceramic
* Relatively low density;
* Extremely high operating temperature;
* Very high hardness and compressive strength;
* Excellent electrical insulation properties;
* Corrosion and wear resistance;
* Biologically inert, food compatibility.
Alumina Ceramic Properties
The following only lists the performance parameters of the three most common aluminum oxide ceramics. Normally, alumina ceramics
are composed of these types
Packing
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Hunan Yuanhong New Material Co.,Ltd was established in 2016 ,there are over 100 sets of ceramic professional equipments , several types of furnace in more than 8000 square meters production workshops. ISO9001 certified, a variety of advanced ceramic materials are ROHS and REACH certified. |
Q1. Do you provide product samples? Yes, we provide samples subject to availability. A nominal sample fee may apply in some cases, and shipping costs are borne by the customer.
Q2. What are your accepted payment methods? We accept T/T (bank transfer) in advance, Western Union, Alipay, and PayPal.
Q3. What is your typical delivery lead time? Lead times vary depending on product requirements, including material selection, dimensions, and specific manufacturing processes.
Q4. Do you perform quality inspection before shipment? Yes, we conduct 100% inspection of all goods prior to delivery to ensure they meet specified standards.
Q5. What other ceramic materials do you offer? We supply a range of advanced ceramic materials, including Alumina, Zirconia, Aluminum Nitride,Boron Nitride, Silicon Nitride, Machinable Glass Ceramic, and related specialized ceramics.
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