Silicon nitride clamps
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材料及含量
产品特点
1、High-temperature stability: It retains over 80% of its room-temperature strength at 1200°C, while the strength of metal materials decreases significantly at the same temperature.
2、Creep resistance: Under a continuous load of 50 MPa at 1200°C for 100 hours, the creep deformation is <0.1%, which is far superior to metal materials.
3、Self-lubricating properties: The dry friction coefficient is as low as 0.4-0.6, and can be further reduced to 0.3 through surface treatment, reducing friction loss.
4、Lightweight design: The density is only 2/5 that of steel, reducing equipment load while maintaining strength.
Non-magnetic: Suitable for applications sensitive to electromagnetic environments, such as semiconductor manufacturing.
产品详情
Silicon nitride clamps Product Introduction:
Silicon nitride clamps play a crucial role in melting furnace crucibles, with their core functions including:
High-Temperature Clamping and Fixing: Silicon nitride ceramic fixtures can operate stably in high-temperature environments of 1200-1400℃, providing reliable clamping and fixing functions for melting furnace crucibles. Their excellent high-temperature strength retention (flexural strength can still reach 600 MPa at 1200℃) ensures structural integrity during high-temperature melting processes.
1. Thermal Shock Resistance: The fixtures possess excellent thermal shock resistance, capable of withstanding sudden heating and cooling shocks of ΔT > 1000℃ without cracking. This characteristic allows them to adapt to frequent temperature changes during the melting process, such as charging and tapping operations.
2. Chemical Inertness Barrier: Silicon nitride is inert to most molten metals (especially non-ferrous metals) and molten salts, and is not prone to chemical reactions or contamination of the melt. In an oxidizing atmosphere, a protective SiO₂ layer forms on the surface, further enhancing corrosion resistance.
3. Wear and Erosion Resistance: High hardness (Vickers hardness 1480-1560 GPa) and wear resistance enable the fixtures to resist erosion from molten metals and slag, significantly extending their service life.
4. Insulation and Safety Protection: In electric melting applications, the high resistivity (10¹⁵~10¹⁶ Ω at room temperature) and dielectric strength (15-20 kV/mm) of silicon nitride ceramics effectively prevent current leakage, ensuring operational safety.
Technical Parameters and Performance Characteristics
Physical performance parameters
Fixture Designs of Different Sizes and Shapes
1. Special surface treatments (such as CVD coating, laser texturing).
2. Composite toughening techniques (addition of silicon carbide whiskers or zirconia fibers).
贸易信息
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