Emva kokufunyaniswa kobuchwepheshe belaser ngo-1960, ukuchaneka kunye nokusebenziseka kwe-laser kubonise amandla amakhulu okusebenza kunye nokulungiswa komhlaba. Ngenxa yeendleko zokuqala eziphezulu kunye nokusebenza okuphantsi kwemithombo ye-laser beam, kwathatha i-laser cladding kude kube ngo-1980 ukuba yamkelwe kwishishini ngokubanzi (Corbin et al. 2004). Ibonakalise ukuba yeyona ndlela ithembisayo yeendlela eziqhelekileyo zombane we-arc welding kunye neendlela zokugquma, kuba igalelo lobushushu elidityanisiweyo likhokelela kwi-dilution ephantsi kunye nokuncipha ngokubanzi kweziphene (Morgado kunye neValente 2018).
Embindini wayo, i-laser cladding yinkqubo yokuwelda i-laser apho amaso e-weld alungelelaniswe kwaye abekwe kwi-substrate imathiriyeli. Ngeyona ndlela ilula, isetyenziselwa ukugubungela iindawo zetsimbi ngeentsimbi okanye i-carbides. Ukusetyenziswa okuqhelekileyo kukuqiniswa kwamacandelo omatshini asetyenziswa kwiindawo ezinqabileyo okanye ezinqabileyo (Lachmayer et al. 2018). Ukugqunywa kwesitokhwe esijikelezayo se-ductile esinentsimbi eqinile kunye ne-wearresistant kuphucula iimpawu ze-tribological zegiya kunye neebheringi. Xa kuthelekiswa nezinye iinkqubo zokugquma, inkqubo esekwe kwi-laser ithambile kakhulu kwaye ke utyalo-mali oluphezulu lomthombo we-laser luhlala lufanelekile. Imveliso eyongeziweyo ene-laser cladding yavela kunye nesidingo sokulungiswa komzobo ogugileyo uyafa ngenxa yesitampu sesinyithi (Levy et al. 2003). Ukongeza, ukuqiniswa kwezakhiwo ezinobunzima obuninzi obusetyenziswa kwishishini leemoto kunokwenzeka.
Ngokubanzi, iintloko zenkqubo yokugquma i-laser zikhona kwiinkqubo ezimbini ezahlukeneyo, zona ngokwazo zahluke ngocingo kunye nemathiriyeli esekwe ngumgubo. Ngexesha elifanayo, zombini iinkqubo zinokuthi ziyilwe kunye ne-off-axis okanye i-coaxial material supply (Lammers et al. 2018).
Ukubekwa kwentsimbi yeLaser kwizicelo zokugquma okusulungekileyo ngokuqhelekileyo kumiselwe amaxabiso aphezulu okubekwa. Ke ngoko, izixa ezikhulu zocingo okanye i powder fller izinto zongezwa kwindawo yokulungisa i-laser off-axially. Kwimisebenzi eyongezelelweyo eyinkimbinkimbi enesisombululo esiphezulu, i-coaxial powder okanye ukuseta i-nozzle nozzle iyafuneka.
Enye yeenzuzo eziphambili zokugquma kwe-laser kwimveliso eyongezelelweyo ngumthamo omkhulu wokwakha, apho amanye amagumbi okwakha anokuba nobukhulu beecubicmeters ezininzi.Ukongezwa kwimigangatho ekhoyo ekhoyo ivumela ukudityaniswa komatshini wesiqhelo wesantya esiphezulu kunye nesongezo esikhethekileyo. imveliso.
Inkqubela phambili ekuphuhlisweni kwenkqubo yenza ukuba kungekuphela nje ukuguqula ubunzima, kodwa kunye nokusetyenziswa kwezinto ezikhethekileyo kunye nobunzima bokuwelda. I-Laser cladding ayipheleli kwiintsimbi kuphela, kunye neeseramics okanye i-carbides zingasetyenziselwa ukusabalalisa kwiindawo zetsimbi ukuze kusebenze iindawo eziprintiweyo ze-3D.
Ixhaswe ngenkqubo ephucukileyo yokubeka iliso kunye nolawulo lwelophu yolawulo, nezinto ezinkulu ezinobude bexesha elide loshicilelo kwaye ekugqibeleni iindawo ezinxulumene nokhuseleko lwenqwelomoya zinokuveliswa kwaye zilungiswe.
Penny Xu
UPenny Xu – uMphathi Jikelele, iiProjekthi zeMetal Additive Manufacturing UMnu. Penny Xu nguMphathi Jikelele osele enamava kunye nengcali yeqhinga kwicandelo lemveliso eyongezelelweyo yesinyithi, edlala indima ebalulekileyo njengebhulorho phakathi kobuchwepheshe kunye neshishini. Ngombono okhethekileyo we-macro kunye nezakhono zokudibanisa izixhobo, wongamela ukuthunyelwa kwezorhwebo kunye nokuphunyezwa kobuchule beeprojekthi zesinyithi ze-AM. Olona xanduva lukaMnu. Xu kukuzibandakanya ngokunzulu neentsingiselo zemarike eziphucukileyo kunye neemfuno zobugcisa zabaxumi abakumgangatho ophezulu. Uyagqwesa ekuchongeni imiceli mngeni engundoqo yabathengi malunga nokusebenza, iindleko, kunye nexesha lokukhokela, kwaye uguqulela ezi mfuno kwiinkcazo zobugcisa ezicacileyo nezisebenzayo. Yakha phezu...
