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RELATIONOFLASERPARAMETERSINCOLOR
MARKINGOFSTAINLESSSTEEL
RELATIONOFLASERPARAMETERSINCOLOR
MARKINGOFSTAINLESSSTEEL
,,,ä1
1VTT,Lappeenranta,Finland
2FraunhoferCenterforLaserTechnology,Plymouth,USA
Abstract
Colormarkingofstainlesssteelsasaprocessisknownforsometimebutstillithasnotbeen
lasersallowindependenttuningdifferentlaserparametersandthemarkingprocesscanbe
,thevisualappearanceof
createauniformoxidelayersonthesurfacewhichwouldappearasahighqualitycolor
alsopresented.
Keywords:lasermarking,color,thinfilmeffect
1Introduction
Colormarkingofmetalsurfacesisconventionallydonebyprinting,anodizationoremulsion
,thescratchpropertiesofprintingarelimitedandanodizingmorethana
usedformorethantenyearswithavarietyofdifferentlasersources/1,2,3,4/.
Despitethepossibilitytovaryprocessingparameterstypicallyinawiderange,somelasers
aremoresuitableforcolormarkingthanothersandthepulsewidthseemstobeanimportant
-
switchedcrystallaserwhichproducesp