Slicing Ceramics on Material Removed by a Single Abrasive Particle

Area of Science:

• Materials Science
• Manufacturing Engineering
• Mechanical Engineering

Background:

• Multi-wire saw machining (MWSM) is crucial for slicing hard-brittle materials in semiconductor and photovoltaic industries.
• Understanding single-wire saw machining (SWSM) is fundamental to optimizing MWSM processes.
• Abrasive-based material removal mechanisms in SWSM require detailed modeling.

Purpose of the Study:

• To develop a mathematical model for SWSM of ceramics, incorporating brittle fracture and plastic deformation.
• To investigate the influence of machining parameters on material removal rates.
• To validate the model through experimental comparison.

Main Methods:

• A mathematical model was formulated using minimum strain energy density for brittle fracture and equations of motion for plastic deformation.
• Machining parameters, including wire speed and working load, were analyzed.
• Experimental wire-sawing tests were conducted to verify the model's predictions.

Main Results:

• Brittle fracture was identified as the dominant mechanism in SWSM of ceramics.
• Higher wire speed and working load significantly increased material removal.
• Low coefficients of friction promoted lateral crack propagation, enhancing brittle fracture and material removal.

Conclusions:

• The developed mathematical model accurately predicts material removal in SWSM of ceramics.
• Optimizing parameters like wire speed and load is key to efficient material processing.
• Understanding crack propagation dynamics is essential for maximizing material removal in abrasive machining.