Silicon nitride (Si₃N₄) ceramic locating pins, also known as ceramic dowel pins, are precision-engineered components designed for high-precision alignment and positioning in extreme environments. Made from advanced non-oxide ceramics, they exhibit exceptional mechanical strength (flexural strength ~800–1,200 MPa), high hardness (Vickers hardness ~1,600 HV), and outstanding thermal shock resistance. These pins are ideal for applications requiring dimensional stability, wear resistance, and corrosion immunity, outperforming traditional steel or polymer pins in harsh industrial settings.

Applications

Silicon nitride ceramic locating pins are critical in industries demanding accuracy and durability:

• Semiconductor Manufacturing: Alignment pins for wafer handling, lithography equipment, and cleanroom robotics.

• Automotive: Positioning pins for EV battery assembly, fuel cell stacks, and high-temperature engine components.

• Aerospace: Precision alignment in composite layup tools, turbine assembly, and satellite systems.

• Industrial Machinery: Dowel pins for CNC machines, injection molds, and high-speed automation systems.

• Medical Devices: Non-magnetic, biocompatible pins for MRI machines and surgical robotics.

• Energy: Alignment components in wind turbines, solar panel manufacturing, and nuclear reactor systems.

Key Advantages

• High-Temperature Stability: Operates continuously up to 1,400°C (2,552°F) without deformation.

• Wear & Corrosion Resistance: Resists abrasion, acids, alkalis, and solvents, ensuring longevity in harsh environments.

• Lightweight & Durable: Low density (3.2–3.4 g/cm³) reduces system weight while maintaining strength.

• Non-Magnetic & Electrically Insulating: Safe for MRI, electronics, and high-voltage applications.

• Low Thermal Expansion: CTE (~3.2 × 10⁻⁶/°C) minimizes positional drift under thermal cycling.

• Precision Machining: Tight tolerances (±0.001 mm) for critical alignment tasks.

• Zero Lubrication: Self-lubricating properties reduce maintenance costs.