Product: Custom 99% Alumina Ceramic Fixture Bracket & Arch Insulator Block
Material Grade: 99% Technical Alumina Ceramics (Al2O3 >= 99%)
Product Classification: Ceramic Insulator / Wear-Resistant Structural Block
Microstructure: Dense Polycrystalline Fine-Grained Matrix
Forming Technology: Cold Isostatic Pressing (CIP) / High-Pressure Dry Pressing
Manufacturer: Hunan Yuanhong New Materials Co., Ltd. (yhxceramic), Loudi, Hunan, China
Established: 2016 | Facility Footprint: 8,000 sqm | Production Lines: 15 | Workforce: 82
Product Overview
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Certified Physical, Thermal & Mechanical Properties (as per Laboratory Specification Card):
- Material Grade: 99% Alumina Ceramics (Al2O3 >= 99%)
- Microstructure: Polycrystalline dense sintered body
- Sintered Density: 3.2 g/cm3
- Vickers Hardness: 1400 HV (Mohs Hardness 9, extreme abrasive wear resistance)
- Thermal Conductivity: 3.0 W/m.K (Thermal barrier insulation, heat shielding)
- Maximum Use Temperature: Up to 1400 deg C in oxidizing or inert atmosphere
- Electrical Function: Certified ceramic insulator, high dielectric breakdown safe
- Chemical Durability: 100% chemically inert to acids, alkalis, and industrial solvents
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Key Selling Points:
Selling Point 1 — Cold Isostatic Pressing (CIP) for Flawless Structural IntegrityManufactured using advanced Cold Isostatic Pressing (CIP) technology. Applying omnidirectional ultra-high hydrostatic pressure produces an ultra-uniform green density, completely eliminating micro-cracks, internal pores, and thermal stress concentrations in thick-section ceramic bridge blocks.
Selling Point 2 — Superior Electrical Insulation & Low Thermal Conductivity (3 W/m·K)
Sintered with a dense polycrystalline alumina microstructure, delivering excellent dielectric breakdown resistance and an exceptionally low thermal conductivity of only 3.0 W/m·K. Acts as an impenetrable electrical barrier and thermal heat shield up to 1400°C.
Selling Point 3 — Extreme Wear Resistance (1400 HV Vickers Hardness)
Delivers a formidable Vickers hardness of 1400 HV, providing extreme resistance to heavy mechanical friction, particle scour, and high-velocity abrasive sliding wear. Extends maintenance intervals by 5–10 times compared to hardened alloy steel wear plates.
Selling Point 4 — Complex Arch Bridge Geometry & Dual Counterbore Bolt Bores
Multi-axis CNC-machined with a large concave bridge arch underside for clearance, dual symmetric stepped counterbore bolt holes for flush rigid fastening, and a precision top U-shaped positioning notch for zero-backlash radial alignment.
Selling Point 5 — Multi-Industry Applications: Semiconductor, Kilns & EV Tooling
Extensively utilized across high-end automated manufacturing: semiconductor wafer handling end-effector fixture brackets, vacuum sintering furnace thermal barrier bridge supports, EV battery high-voltage busbar isolating blocks, and abrasive slurry guide rail blocks.
Selling Point 6 — Factory Direct Sourcing & 100% CMM Precision Inspection
Produced in Hunan Yuanhong's 8,000㎡ precision technical ceramics facility under ISO9001 quality systems. Every piece is 100% verified using 3D coordinate measuring machines (CMM) and optical profile projectors. Rapid prototype samples delivered within 3–7 business days under bilateral NDA protection.
Certified Precision Machining Capabilities:
- Mounting Datum Flatness: Up to 0.002 mm (Precision ground base)
- Counterbore Hole Diameter Tolerance: Up to +/- 0.003 mm
- Stepped Counterbore Depth Accuracy: Up to 0.005 mm
- Minimum Slot & Notch Width: Down to 0.2 mm
- Surface Roughness: Down to Ra 0.02 um (Mirror lapped critical surfaces)
- Dimensions: 100% Custom Machined to Customer CAD / Technical Drawings
Geometric & Structural Characteristics:
- Bridge arch underside span providing large concave clearance and uniform stress distribution
- Dual symmetric stepped counterbore bolt bores for flush, rigid mechanical fastening
- Precision top semi-circular U-shaped radial positioning groove for zero-backlash alignment
- Precision-milled rectangular datum faces with micro-radiused burr-free chamfers
- Monolithic thick-wall structural design with zero internal porosity or stress micro-cracks
Available Advanced Ceramics Matrix:
- Alumina Ceramics: 95% Al2O3, 99% Al2O3, 99.7% Al2O3
- Zirconia Ceramics: 3Y-TZP (White), 8Y-FSZ, Black Zirconia
- Magnesia-Stabilized Zirconia: Mg-PSZ (Yellowish, high impact resistance)
- Silicon Carbide: SSiC (Sintered SiC), RBSiC (Reaction-Bonded SiC)
- Silicon Nitride: Si3N4 (High thermal shock resistance)
- Tungsten Carbide (WC): Cemented carbide wear parts
Quality Control & Assurance:
- Certifications: ISO9001, CE, RoHS, REACH
- Quality Testing: 100% 3D Coordinate Measuring Machine (CMM) & Surface Profilometer Inspection
- Prototyping Lead Time: 3 to 7 business days
- Production Lead Time: 15 to 20 business days
- Packaging: Form-fitted high-density EPE shock-absorbing foam tray + Export-standard wooden crate
- Confidentiality: Bilateral Non-Disclosure Agreement (NDA) supported for proprietary CAD designs
Application
Primary Application Fields:
- Semiconductor Equipment: Wafer handling bridge supports, end-effector insulating brackets
- High-Temperature Vacuum Kilns: Sintering furnace heating element supports, thermal barrier rails
- New Energy & EV Manufacturing: Battery cell high-voltage isolating brackets, busbar spacers
- Industrial Automation: High-wear guide rail slide blocks, abrasive slurry fixture spacers
- Optical & Analytical Instruments: Low thermal expansion positioning brackets and bases
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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: Can this ceramic holder replace wooden guide block directly?
A1: Yes, we can produce same size as your original wooden block, direct replacement without modifying machine.
Q2: Is it resistant to cooling liquid and acid lye?
A2: 99 alumina ceramic has excellent chemical stability, completely resistant to common drawing cooling fluid, acid and alkali liquid.
Q3: Do you accept small trial order?
A3: Yes, small batch sample order is welcome for customer test.
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