Grit blast assisted laser milling/grooving of metallic alloys

L. Li, J. H. Kim, M. H A Shukor

Research output: Contribution to journalArticlepeer-review

Abstract

Laser machining and milling of metallic alloys and ceramics have been previously carried out by either direct vaporisation or assist gas ejection of laser-melted materials. For certain metallic materials, due to the high viscosity of the materials in the molten state, it is difficult to achieve a clean cut. Recast and heat affected zones are normally formed. This paper reports a hybrid process combining a grit blasting and laser melting for the milling and grooving of stainless steel, mild steel and titanium alloys. The work shows that up to 100% increase in material removal rate and 15% reduction in the heat affected zone size can be achieved compared with a gas jet assisted laser machining process under the same operating conditions. Surface roughness has been reduced by 60%. The effect of particle injection angle, direction on material removal rate is presented. A critical particle injection angle is established.
Original languageEnglish
Pages (from-to)183-186
Number of pages3
JournalCIRP Annals - Manufacturing Technology
Volume54
Issue number1
DOIs
Publication statusPublished - 2005

Keywords

  • Laser
  • Machining
  • Powder

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