I-Selective Laser Melting (SLM) isebenzisa imisebe ye-laser enamandla amakhulu futhi incibilikisa ngokuphelele impushana yensimbi ukuze kwakhe izimo ze-3D, okuwubuchwepheshe obunamandla bokukhiqiza okungeza insimbi.Kubuye kubizwe nge-laser melting welding technology.Ngokuvamile, kuthathwa njengegatsha lobuchwepheshe be-SLS.
Enqubweni yokuphrinta ye-SLS, Impahla yensimbi esetshenziswayo iyimpushana exubekile yensimbi ecutshungulwayo nephansi encibilika noma into yamangqamuzana.Indawo encibilikayo ephansi iyancibilika kodwa indawo ephezulu yokuncibilika yensimbi eyimpushana ayincibiliki lapho kwenziwa inqubo. Sisebenzisa into encibilikisiwe ukuze sifinyelele umphumela wokubopha nokubumba.Ngenxa yalokho, ibhizinisi linezimbotshana kanye nezakhiwo ezingasebenzi kahle.Ukuncibilika kabusha ekushiseni okuphezulu kubalulekile uma kudingeka kusetshenziswe.
Yonke inqubo yokuphrinta ye-SLM iqala ngokusika idatha ye-3D CAD nokuguqula idatha ye-3D ibe idatha eminingi ye-2D.Ifomethi yedatha ye-3D CAD imvamisa iyifayela le-STL.Ibuye isetshenziswe kabanzi kwezinye izindlela zokuphrinta ze-3D ezinezingqimba.Singakwazi ukungenisa idatha ye-CAD kusofthiwe yokusika futhi simise imingcele yezibaluli ezihlukahlukene, futhi siphinde sibeke imingcele yokulawula ukuphrinta.Enqubweni yokunyathelisa ye-SLM, okokuqala, ungqimba oluncane lunyatheliswa ngokufanayo ku-substrate, bese ukuphrinta komumo we-3D kubonakala ngokuhamba kwe-axis ye-Z.
Yonke inqubo yokuphrinta yenziwa esitsheni esivaliwe esigcwele i-inert gas argon noma i-nitrogen ukunciphisa okuqukethwe kwe-oxygen ku-0.05%.Imodi yokusebenza ye-SLM ukulawula i-galvanometer ukuze ibone i-laser irradiation ye-powder ethayela, ukushisa insimbi ize incibilike ngokuphelele.Lapho ithebula le-irradiation lezinga elilodwa seliqediwe, ithebula liya phansi, futhi indlela yokufaka amathayela yenza umsebenzi wethayela futhi, bese kuba i-laser .Ngemva kokuqedwa kokukhanya kwesendlalelo esilandelayo, ungqimba olusha lwempushana luyancibilika futhi luhlanganiswe. ngesendlalelo sangaphambilini,.Lo mjikelezo uyaphindwa ukuze ekugcineni uqedele i-geometry ye-3D.Indawo yokusebenza igcwele igesi engasebenzi ukuze kuvinjelwe impushana yensimbi ukuthi ifakwe i-oxidized,.Abanye banohlelo lokujikeleza komoya ukuze kuqedwe inhlansi ekhiqizwa i-laser.
Izinsizakalo zokuphrinta ze-SLM zesengezo se-JS zisetshenziswa emikhakheni ehlukahlukene, njengokukhiqiza isikhunta, izakhi zokunemba kwezimboni, i-aerospace, ukukhiqizwa kwezimoto, izinhlelo zokusebenza zezokwelapha, ucwaningo lwesayensi, nokunye ukukhiqizwa noma ukwenza ngokwezifiso iqoqo elincane le-moldless.Ubuchwepheshe be-SLM prototyping ngokushesha bunezici zesakhiwo esifanayo futhi azikho izimbobo, ezikwazi ukubona isakhiwo esiyinkimbinkimbi kakhulu kanye nomklamo womgijimi oshisayo.