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May 16, 2025

Advanced Machining of Dense Silicon Nitride Components for Aerospace Applications

Processing product characteristics

Material: dense silicon nitride (hardness HV1,850)

Processing features: φ28×55mm complex 3D surface

Application areas: aircraft front fairing, high temperature resistant bearings

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Industry pain point analysis

A. Material characteristics challenge
Silicon nitride ceramics, as a high hardness and wear-resistant material, are widely used in high-temperature aerospace components, but their low fracture toughness makes traditional processing prone to microcracks.

B. Traditional machining defects
① Tool wear rate is 8 times that of ordinary steel
② 3D surface grinding efficiency is only 2.3cm³/h
③ Breakage rate exceeds 35% (industry average)

MID Solutions core technology

Ultrasonic vibration five-axis machining center: 20kHz high-frequency vibration reduces cutting force

Supercritical CO2 cooling system: -78℃ low temperature suppresses material thermal stress

MQL internal cooling technology: 0.05ml/h micro-lubrication reduces tool adhesion

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Measured performance comparison

Indicators Traditional process MID solution improvement range Processing cycle 133h72h46%↓Surface roughness Ra0.8μmRa0.2μm75%↓Tool replacement frequency 4 pieces/tool ​​18 pieces/tool ​​350%↑

Industry application expansion

This solution is also applicable to:

Satellite thruster ceramic nozzle processing

Semiconductor wafer handling robot arm

Artificial joint ceramic ball head precision grinding

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