Sonke sakhe izinqaba zesanti ogwini: izindonga ezinamandla, imibhoshongo ebabazekayo, imisele egcwele oshaka.

Sonke sakhe izinqaba zesanti ogwini: izindonga ezinamandla, imibhoshongo ebabazekayo, imisele egcwele oshaka.Uma ufana nami, uzomangala ukuthi inani elincane lamanzi lihlangana kanjani—okungenani kuze kuvele umfowenu omkhulu futhi alikhahlele ngenjabulo ebhubhisayo.
Usomabhizinisi u-Dan Gelbart naye usebenzisa amanzi ukuze ahlanganise izinto zokwakha, nakuba idizayini yakhe iqinile kakhulu kunombukwane wangezimpelasonto wolwandle.
Njengomongameli kanye nomsunguli we-Rapidia Tech Inc., umphakeli wezinhlelo zokuphrinta zensimbi ze-3D e-Vancouver, British Columbia, nase-Libertyville, e-Illinois, u-Gelbart usungule indlela yokukhiqiza ingxenye eqeda izinyathelo ezidla isikhathi ezitholakala kubuchwepheshe obuqhudelanayo kuyilapho yenza ukususwa kosekelo kube lula..
Kwenza futhi ukuhlanganisa izingxenye eziningi kungabi nzima njengokuvele uzicwilise emanzini kancane bese uzihlanganisa—ngisho nezingxenye ezenziwe ngezindlela zokukhiqiza ezivamile.
U-Gelbart uxoxa ngomehluko obalulekile phakathi kwezinhlelo zakhe ezisekelwe emanzini nalezo ezisebenzisa izimpushana zensimbi eziqukethe u-20% kuya ku-30% we-wax ne-polymer (ngevolumu).Amaphrinta we-Rapidia ensimbi enamakhanda amabili e-3D akhiqiza ukunamathisela kusuka kumpushana yensimbi, amanzi kanye ne-resin binder ngamanani asukela ku-0.3 kuya ku-0.4%.
Ngenxa yalokhu, wachaza, inqubo yokudonswa kwemali edingekayo ngobuchwepheshe obuncintisanayo, evame ukuthatha izinsuku ezimbalwa, iyaqedwa futhi ingxenye ingathunyelwa ngqo kuhhavini we-sintering.
Ezinye izinqubo ikakhulukazi embonini ye-"long-standing injection molding (MIM)" edinga izingxenye ezingagxiliwe ezingagxiliwe ukuze zibe nezilinganiso eziphakeme kakhulu ze-polymer ukuze kube lula ukukhululwa kwazo ekubunjeni," kusho uGelbart.“Kodwa-ke, inani le-polymer elidingekayo ukuze kuhlanganiswe izingxenye zokuphrinta kwe-3D empeleni lincane kakhulu—ingxenye eyodwa kweshumi yephesenti yanele ezimweni eziningi.”
Pho kungani uphuza amanzi?Njengesibonelo sethu se-sandcastle esisetshenziselwa ukwenza unamathisele (ukunamathisela kwensimbi kuleli cala), i-polymer ibamba izingcezu ndawonye njengoba zoma.Umphumela uba yingxenye ehambisana nobulukhuni boshoki oseceleni komgwaqo, oqine ngokwanele ukumelana nomshini wangemuva komhlangano, umshini omnene (nakuba u-Gelbart encoma ukwenziwa kwemishini ye-post-sinter), ukuhlanganisa ngamanzi nezinye izingxenye ezingaqediwe, bese kuthunyelwa kuhhavini.
Ukuqeda ukwehlisa amafutha nakho kuvumela izingxenye ezinkulu, ezinodonga oluqinile ukuthi ziphrintwe ngoba uma usebenzisa izimpushana zensimbi ezifakwe nge-polymer, i-polymer ayikwazi "ukuvutha" uma izindonga zengxenye zikhulu kakhulu.
U-Gelbart uthe umkhiqizi oyedwa wemishini udinga ukujiya kwezindonga okungu-6mm noma ngaphansi.“Ngakho-ke ake sithi wakha ingxenye elingana negundane lekhompyutha.Uma kunjalo, ingaphakathi lizodinga ukuba libe lingenalutho noma mhlawumbe uhlobo oluthile lwe-mesh.Lokhu kuhle ezinhlelweni eziningi zokusebenza, ngisho nokukhanya kuwumgomo.Kodwa uma amandla angokomzimba edingeka njengebhawodi noma enye ingxenye enamandla amakhulu, khona-ke [umjovo wempuphu yensimbi] noma i-MIM ngokuvamile ayifaneleki.”
Isithombe esisanda kuphrintwa esiyinqwaba sibonisa izinto zangaphakathi eziyinkimbinkimbi ezingakhiqizwa iphrinta ye-Rapidia.
U-Gelbart ukhomba ezinye izici ezimbalwa zephrinta.Amakhatriji aqukethe okunamathiselwe kwensimbi ayaphinda agcwaliseke futhi abasebenzisi abawabuyisela ku-Rapidia ukuze agcwaliswe kabusha bazothola amaphuzu anoma iyiphi into engasetshenzisiwe.
Izinhlobonhlobo zezinto ezitholakalayo, kufaka phakathi i-316 ne-17-4PH insimbi engagqwali, i-INCONEL 625, i-ceramic ne-zirconia, kanye nethusi, i-tungsten carbide nezinye izinto ezimbalwa ezisathuthukiswayo.Izinto zokusekela - isithako esiyimfihlo kumaphrinta amaningi ensimbi - zenzelwe ukuphrinta ama-substrates angasuswa noma "ahwamuke" ngesandla, avule umnyango kwezinye izinto zangaphakathi ezingenakuphinda zikhiqizeke.
I-Rapidia isineminyaka emine isebhizinisini futhi, kuyavunywa, isanda kuqala."Inkampani ithatha isikhathi sayo ukulungisa izinto," kusho uGelbart.
Kuze kube manje, yena nethimba lakhe basebenzise izinhlelo ezinhlanu, okuhlanganisa eyodwa e-Selkirk Technology Access Center (STAC) eBritish Columbia.Umcwaningi u-Jason Taylor ubesebenzisa umshini kusukela ekupheleni kukaJanuwari futhi ubone izinzuzo eziningi ngaphezu kwamaphrinta ambalwa akhona e-STAC 3D.
Waphawula ukuthi ikhono “lokunamathisela ndawonye ngamanzi” izingxenye eziluhlaza ngaphambi kokuba sintering linamandla amakhulu.Unolwazi nangezindaba ezihambisana nokwehlisa amafutha, okuhlanganisa ukusetshenziswa nokulahlwa kwamakhemikhali.Nakuba izivumelwano zokungadaluli zivimbela u-Taylor ukuthi abelane ngemininingwane yomsebenzi wakhe omningi lapho, iphrojekthi yakhe yokuqala yokuhlola yinto abaningi bethu abangase bayicabange: induku ephrintiwe ye-3D.
“Kwabonakala kuphelele,” esho emamatheka.“Siqede ubuso, sabhoboza imbobo yomgodi, ngiyawusebenzisa manje.Sihlabeke umxhwele ngekhwalithi yomsebenzi owenziwe ngesistimu entsha.Njengazo zonke izingxenye ze-sintered, kukhona ukushwabana nokungaqondani kahle kancane, kodwa umshini wanele.Ngokuvumelana, singakwazi ukunxephezela lezi zinkinga ekwakhiweni.
Umbiko Owengeziwe ugxile ekusetshenzisweni kobuchwepheshe bokukhiqiza okungeziwe ekukhiqizeni kwangempela.Abakhiqizi namuhla basebenzisa ukuphrinta kwe-3D ukuze bakhe amathuluzi nezakhiwo, futhi abanye basebenzisa i-AM ukukhiqiza ivolumu ephezulu.Izindaba zabo zizovezwa lapha.


Isikhathi sokuthumela: Aug-23-2022
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