Laser assisted micro grinding of high strength materials

Wenlong Chang, X. Luo, J. Sun, Q. Zhao, Y. Zhao

Research output: Chapter in Book/Report/Conference proceedingChapter

14 Citations (Scopus)
432 Downloads (Pure)

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.
Original languageEnglish
Title of host publicationPrecision Machining VI
Subtitle of host publicationSelected, Peer Reviewed Papers from the 6th International Congress of Precision Machining (Icpm2011)
EditorsMichael N. Morgan, Andrew Shaw, Otar Mgaloblishvili
Place of PublicationDurnten-Zurich, Switzerland
Pages44-49
Number of pages6
Volume496
DOIs
Publication statusPublished - Apr 2012

Keywords

  • laser assisted grinding
  • hybrid process
  • micro grinding
  • subsurface damage

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