HBN Boron Nitride Ceramic Guiding Nozzles for Molten Metal Liquid
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- Supplier: Xiamen Mascera Technology Co. Ltd.
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Product Overview
Description
Manufacturing capability
| Tolerance for linear dimensions: | ±0.002mm at best | Straightness: | 0.02mm at best | |
| Tolerance for angular dimensions: | ±0°10' at best | Minimum hole diameter: | 0.5mm | |
| Surface roughness: | Ra0.05μm at best | Minimum internal thread: | M2 | |
| Concentricity: | 0.02mm at best | Maximum external thread: | M20 | |
| Cylindricity: | 0.02mm at best | Available thread type: | Metric, UNC/UNF, BSW | |
| Flatness: | 0.02mm at best | Available surface finish: | as fired, grinding, lapping, polishing, metallization, glazed | |
| Parallelism: | 0.02mm at best |
PRODUCT DESCRIPTION
Boron nitride (BN) nozzles made of hot pressed boron nitride ceramics have outstanding thermal shock resistance, crack or break will not happen when boron nitride nozzles undergo sudden heating or cooling. The ceramic nozzles have good temperature resistance up to 2100 (under inert gas protection). Boron nitride ceramic nozzles are widely applied for metal powder gas atomization because they have no reaction or wetting with molten metals.
Our company develops a variety of material formula for boron nitride nozzles according to various gas atomization processes and powder materials to meet the needs of different users, we will give suggestion for material selection when inquiry.
| Material Type | BN-99 | BN-B | BN-D |
| Main Content | BN>99% | BN+ZR+AL | BN+ZRO2 |
| Color | White | Light Grey | Dark Grey |
| Density (G/Cm3) | 1.95-2.0 | 2.25-2.35 | 2.8-2.9 |
| Flexural Strength (Mpa) | 30 | 65 | 90 |
| Compressive Strength (Mpa) | 85 | 145 | 220 |
| Electrical Resistivity (Ω.Cm) | >1014 | >1013 | >1012 |
| Max. Service Temp. () @Air Condition | 900 | 900 | 900 |
| Max. Service Temp. () @Inert Gas Condition | 2100 | 1750 | 1800 |
| Thermal Expansion Coefficient (25 - 1000) (10-6/K) | 1.8 | 2 | 3.5 |
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