10第10章 (2/2)

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ultravioletlasers,masteredproperusageoflaser?safetygoggles,protectivebafflesandsmoke?exhaustdust?removalsystems,andbecamefamiliarwithstandardizedproceduresforpre?start?upinspection,emergencyshutdownandfaultreporting.Combinedwithworkshop?installedequipment,instructorsreviewedlaser?generationprinciplesandtheworkingmechanismofstimulatedemission,aswellasapplicablescenariosfordifferentlasersources.Iclearlyunderstoodthatfiberlasersaremainlyadoptedformetallic?materialprocessing,CO?lasersfitnon?metal?materialmachining,andultravioletlasersareappliedtoultra?precisionmicro?machining.Thishelpedmeconnectclassroomtheorieswithindustrial?gradeequipmentpracticallyandcorrectmypreviousone?sidedunderstandingoftextbookknowledge.
  

  

  
Afterfinishingsafety?relatedtraining,Ibeganhands?onworkshoppracticefocusingonthreemainstreamprocesses:lasercutting,lasermarkingandlaserwelding.Inlaser?cuttingpractice,Ioperatedfiber?laser?cuttingmachineswithseniortechnicianstoprocesscarbon?steel,stainless?steelandaluminum?alloyplates.Atfirst,Iundertookauxiliarytaskssuchascleaningwork?pieces,levelingwork?tables,drawing?layoutdesignandparameter?datarecording.Underprofessionalguidance,IlearnedtouseCADandLaserCutsoftwarefordraftingprocessingdrawingsandoptimizedlayoutschemesbasedonworkpiecedimensionsandplatethicknesstoreducematerialwaste.Ifocusedonlearningadjustmentlogicofcutting?processparametersandrealizedthatlaserpower,cuttingspeed,focal?pointpositionandgas?pressurevaluearefourdecisivefactorsforcutting?surfacequality.Forinstance,higherlaser?poweroutputpairedwithslowercuttingspeedisrequiredforthickcarbon?steelsheetstoachievecompletepenetration;thinstainless?steelplatesneedlowerlaser?powersettingsandfastercuttingspeedtoavoidedgeburningandplatedeformation.Afterrepeatedpractice,Iwasabletoindependentlyfinishlayoutdesign,parameterconfigurationandmachine?drivencuttingforsimplemetalsheets.Besides,Icouldidentifycommoncuttingdefectssuchasdrossadhesion,unevenkerfwidthandplateover?burning,andassisttechnicianstoadjustprocess?parametersforbetterprocessingoutcomes.
  

  

  
Lasermarkingwasthemost?frequentlypracticedandmost?skilled?to?mastertechniquethroughoutmyinternship,widelyusedforidentificationprocessingofhardwareaccessories,electroniccomponents,nameplatesandornaments.Theworkshopwasequippedwithfiber?lasermarkersandultraviolet?lasermarkers.Fiber?lasermarkersareusedfordeep?engravingpatternsonmetallicmaterials,whileultraviolet?lasermarkersachieveresidue?freeprecisemarking