Performance of laser polishing in finishing of metallic surfaces

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Journal titleInternational Journal of Advanced Manufacturing Technology
Pages3552; # of pages: 18
SubjectLiquid metals; Metallic compounds; Surface roughness; Laser polishing; Metallic material; Polishability; Process parameters; Surface finishes; Surface measurement
AbstractLaser polishing is presently regarded as one of the enabling technologies hoped to eventually replace the need for time-consuming and error-prone manual polishing operations which are often required by metallic surfaces. During laser polishing, a thin layer of material is being melted as a result of laser irradiation. Since molten metal is characterized by increased relocation capabilities, laser polishing is generally accompanied by a more or less significant decrease in the surface roughness. The primary objective of this study is to present a comprehensive snapshot of the advancements made over more than one decade with respect to theoretical and experimental investigation of laser polishing technology. However, in addition to the usual review of the state-of-theart in the field, the study places an increased emphasis on the finishing performance of the process, defined through the perspective of pre- and postpolishing surface roughness. The implementation of this metric with strong practical implications has revealed that under appropriate process parameters, certain classes of metallic materials can reduce their average surface roughness by more than 80 %, possibly to Ra=5 nm. Nonetheless, a more rigorous and fundamental understanding of the intrinsic mechanisms underlying laser polishing remains one of the currently unfulfilled premises toward a wider industrial adoption of the process. © Springer-Verlag London 2014.
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AffiliationNational Research Council Canada (NRC-CNRC); Automotive and Surface Transportation
Peer reviewedYes
NPARC number21272258
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Record identifier0daa06a2-4f72-432b-b5b4-8db108ca5288
Record created2014-07-23
Record modified2016-05-09
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