Laser Assisted Micro Grinding of High Strength Materials

Wen Long Chang; Xi Chun Luo; Qi Ling Zhao; Ji Ning Sun; Yi Zhao

doi:10.4028/www.scientific.net/KEM.496.44

Paper Titles

Error Size of the Helix (screw) Groove by Grinding
p.19

Influence of the Corrosion Surrounding on Surface Quality of Grounded Hardened Steels
p.25

New Laser Machine Tools for Processing Carbon Fibre Reinforced Plastic (CFRP)
p.30

Advanced Fiber Laser Perforation Technology for Thermoplastic Pre-Preg Material
p.36

Laser Assisted Micro Grinding of High Strength Materials
p.44

Transformation "Insulator-Conductor" after Laser Irradiation of the Polymer Films
p.50

Fibre Laser Cleaning of Grinding Wheels
p.55

Comparison of Picosecond and Femtosecond Laser Ablation for Surface Engraving of Metals and Semiconductors
p.61

Ecologically Friendly Dry Machining by Cutting Tool from Layered Composition Ceramic with Nano-Scale Multilayered Coatings
p.67

HomeKey Engineering MaterialsKey Engineering Materials Vol. 496Laser Assisted Micro Grinding of High Strength...

Laser Assisted Micro Grinding of High Strength Materials

Abstract:

This paper aims to develop a laser assisted grinding process capable of manufacturing micro features in high strength materials. A diode laser with wavelength 808 nm was set on a precision grinding machine. Micro grooves were fabricated on high strength materials including silicon nitride and aluminium oxide by using the laser assisted grinding process, i.e. laser pre-heat workpiece flowed by micro grinding. The experimental results showed that the laser assisted grinding process resulted in deeper grooves due to thermal expansion of workpiece materials caused by laser heating. However, the machined surface roughness was more consistently better than that obtained using solo grinding process and applying coolant. No subsurface damage was observed in the SEM images of cross sections of the machined workpieces when laser assisted grinding process was used.