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Umdwebo we-3dpbm wobuchwepheshe bokukhiqiza i-ceramic additive »

Bonke ubuchwepheshe bezohwebo be-Ceramic AM kumephu engu-3dpbm ye-Ceramic Additive Manufacturing (kusuka ku-3dpbm's esanda kukhishwa Amathuba Okukhiqiza I-Ceramic Additive Manufacturing Amathuba kanye Nombiko wamathrendi) busekelwe enqubweni yokuhlanganisa izinhlayiya ze-ceramic zibe sesimweni sento ye-3D, bese uzibeka. izinsika ku-Sintering esithandweni somlilo - isinyathelo sokucubungula.Ngokungafani ne-metal AM, okuwumndeni omusha nozimele wobuchwepheshe, ubuchwepheshe be-hardware obuyi-ceramic AM buvela emndenini wezinto ezihlanganisiwe.Ngenxa yalesi sizathu, ukukhula kule ngxenye kulinganiselwe kakhulu. , kodwa futhi ivula amathuba obuchwepheshe bensimbi obusafufusa be-AM (i-filament eboshiwe, i-metal binder jetting) esebenza ngendlela efanayo.Futhi, nakuba idinga ukucwiliswa esithandweni somlilo, ubuchwepheshe obuningi obuhlanganisiwe bubhekwa njengezinqubo ezikhiqizwayo.Ngakho-ke izitsha zobumba zazalwa. futhi iyaqhubeka nokuvela njengendlela yokukhiqiza, kanye ne-prototyping, esikhundleni sendlela ye-prototyping eguqukela ekukhiqizeni (njengoba kunjalo ngo ubuchwepheshe obuningi bokukhiqiza i-polymer kanye nensimbi).
Okunye okumangazayo (futhi okungenzeka kukhungathekise) ukuthi okwamanje ayikho inqubo yokuhlanganisa i-powder bed ethengiswayo ye-ceramics.Imizamo yenziwe esikhathini esidlule, futhi inqwaba yezifundo ezishicilelwe zizamile futhi ziyaqhubeka nokuzama ukubonisa ukusebenza kwe-laser eqondile. ukucwiliswa kwezitsha zobumba njengendlela yokukhiqiza.Nokho, izinselele ezihlobene nokucwiliswa kwe-laser okuqondile kwezitsha zobumba, ikakhulukazi ngenxa yamazinga okushisa aphakeme kakhulu adingekayo ukuze sinter noma ukuncibilikisa izimpushana zobumba, zivimbele lezi zinqubo ekubeni ithuba lokuhweba elisebenzayo.Izinqubo zeHybrid, ngo ama-laser asebenza ezintweni ezihlanganiswe nezimpushana ze-ceramic ngenqubo eyodwa, asehloliwe, kodwa kuze kube manje abe nempumelelo elinganiselwe kwezohwebo.
Kodwa-ke, njengoba imboni yokukhiqiza izithasiselo zensimbi ibona ukuthi i-binder jetting ingase ekugcineni inikeze amanani okukhiqiza ashesha kakhulu, ubuchwepheshe bokukhiqiza okungeziwe kwe-ceramic (njengoba kukhonjisiwe kumephu ye-3dpbm yokukhiqiza okungeziwe kwe-ceramic) buye benza inqubekelaphambili ebalulekile kulo mkhakha.Kanjalo, njengokukhiqizwa kwezithasiselo zensimbi. iqala ukwamukela ukuthi ukuhlanganisa ubuchwepheshe bezintambo kunganikeza izixazululo ezingabizi kakhulu futhi ezilungele ihhovisi, ubuchwepheshe obufanayo bungafakwa kalula (futhi busetshenziswa) kuma-ceramics.Ekugcineni, njengoba imboni yokukhiqiza izithasiselo zensimbi ithola amandla okuxazulula okuphezulu kuhlangene i-metal paste stereolithography, lobu buchwepheshe buthole ukusetshenziswa okuhle ekukhiqizeni okungeziwe kwe-ceramic.
Nakuba inqubo ye-stereolithography (SLA) ihlotshaniswa ngokuyinhloko nezinto zokunyathelisa ze-polymer 3D, le nqubo ibuye ifanele ukukhiqiza izingxenye ze-ceramic.Njengoba kuboniswe ku-Ceramic Additive Manufacturing Technology Map, i-stereolithography iwubuchwepheshe obuqashelwa kakhulu nobuthembekile bezinto zobumba zokunyathelisa ze-3D. Enqubweni ye-ceramic stereolithography, isendlalelo se-ceramic slurry esenziwe nge-monomer resin enokuqukethwe okuphezulu kwe-ceramic siyelapheka kusetshenziswa umthombo wokukhanya.Lo mthombo wokukhanya uyahlukahluka ngobuchwepheshe.Isibonelo, amasistimu e-SLA azosebenzisa ama-laser ukwelapha okunamathiselwe, kuyilapho amaphrinta e-DLP ethembele. kuma-digital micromirror projektha.I-resin ye-monomer iyaqina lapho ivezwe kumthombo wokukhanya (inqubo ye-photopolymerization), ibopha izinhlayiya ze-ceramic ngaphakathi kwe-polymer matrix.Ngenxa yokuthi inqubo ye-ceramic stereolithography ikhiqiza izingxenye eziphrintiwe eziluhlaza, ivamise ukuhambisana nokucutshungulwa kwangemuva, okuhlanganisa ukwelashwa kokushisa ukususa ama-binders kanye ne-sintering ukukhiqiza izingxenye ze-ceramic eziminyene ngokugcwele.
Ijetting ye-binder isebenzisa okukhethiwe koketshezi olubophayo ekuhlanganiseni izinto eziyimpushana ezendlalelo. Kuyafana nokuphrinta nge-inkjet, kodwa esikhundleni sokusebenzisa uyinki ephepheni ukuze kwakhiwe umkhiqizo onezinhlangothi ezimbili, iphrinta yejethi ehlanganisayo ibophela izingqimba zempushana ngayinye ukuze dala into enezinhlangothi ezintathu.Kubuchwepheshe bokukhiqiza okungeziwe kwe-ceramic, i-jetting ye-binder igwema amaphutha okuncipha okuvamile futhi ivumela ukudalwa kwezimo eziyinkimbinkimbi.Ezinye izinzuzo zihlanganisa ukusekelwa kwengxenye evela kumpushana ozungezile, ukukhululeka okuhlobene kokunciphisa nokufaneleka kwezingxenye zebanga lezokwelapha ezinkulu nezezokwelapha.Okuvamile izinto ezisetshenziswayo zihlanganisa isihlabathi nosimende, izitsha zobumba zobuchwepheshe ezifana ne-silicon carbide ne-boron carbide, kanye nezinga elincane le-oxide ceramics njenge-alumina ne-zirconia.I-jetting ye-binder ngokungangabazeki iyinqubo esebenza kahle kakhulu yamathuluzi e-ceramic, isikhunta nama-casting cores. impahla, indlela yebhondi kanye nendlela, kanye nezinyathelo zangemva kokucubungula ezifana ne-de-powdering kanye nokuminyana.
I-Fused filament fabrication (FFF) iyindlela evame kakhulu yokuphrinta ye-3D ngenxa yamaphrinta ayo ashibhile kanye nohlu olubanzi lwezinto ezitholakalayo.Ukuphrinta izingxenye zobumba nge-FFF, izinkampani ezimbalwa zenze izinto zobumba ezigcwele kakhulu (amaceramics kumatrices we-thermoplastic) futhi zethula inqubo ephelele. amaketango.Ngokujwayelekile, izinto eziqukethe u-50% we-ceramic zingaphrintwa ngosayizi wombhobho omncane njengama-microns angu-150. Ugqinsi longqimba lwama-microns angu-80 nobubanzi be-strip obungama-microns angu-160 lungafinyelelwa kusetshenziswa isakhiwo sedemo esivulekile.Nokho, izingxenye eziphrintwe ngale ndlela. abakafinyeleli ukuminyana kwe-post-sintered okuqhathaniswa ne-stereolithography noma ukubunjwa komjovo we-ceramic, okukhawulela ububanzi bezinhlelo zokusebenza ezingase zibe khona emkhakheni wezingxenye ezithuthukisiwe ze-ceramic.Ngesikhathi sokunyathelisa nokufakwa kwe-deposition, izimbobo kanye nezimbobo ziyethulwa, nakuba lezi zingaqedwa kancane kancane ngokuya ngokuya. amathuluzi okuphatha izindlela ezihlakaniphile.Kuhlinzekwa yizinkampani ezikhonjiswe ku-Ceramic AM Technology Map, FF U-F okwamanje unikeza indlela ethembisayo yokukhiqiza ama-ceramic prototypes noma uchungechunge oluncane lwezinto ze-ceramic ezingezona ezobuchwepheshe.
Inqubo ye-pneumatic extrusion isebenzisa ingcindezi yomoya ukuze ikhiphe izinto ezisezingqimbeni, futhi indlela ye-printhead ifana naleyo esetshenziswa ezinqubweni ze-thermoplastic extrusion.Izinto ezihambisanayo zifaka izinto zobumba zendabuko ezifana nobumba nobumba (kanye nama-thermosets nezinto zokuphrinta eziphilayo ezifana ne-bioinks nama-hydrogel. ).Ekukhiqizweni kwesengezo se-ceramic, i-pneumatic extrusion ingase ifaneleke kakhulu ezinhlelweni zokusebenza zobuciko nedizayini.Inqubo isebenzisa ukucindezela ngokuvamile okunikezwa isistimu yomoya ecindezelwe noma isirinji ukuze ikhiphe futhi ifake ngokukhetha udaka lwe-ceramic.Lokhu kunamathisela, okufana nokunamathisela okusetshenziswa izitsha zobumba ezenziwe ngezandla, ziyingxube yempushana yobumba kanye namanzi ngesilinganiso esiwuketshezi olwanele ukuphumela ngaphandle kodwa aminyene ngokwanele ukuba agqinsise izendlalelo ngaphandle kokuwohloka.Amasistimu okukhipha umoya womoya angaba amaphrinta azimele odwa akhelwe ngokukhethekile izitsha zobumba (i-Cartesian noma, ngokuvamile, unxantathu), noma njengamakhithi okungeza kumaphrinta we-3D we-thermoplastic extrusion.
Ijetting yezinto ezibonakalayo ingabhekwa njengohlobo oluthuthuke kakhulu kubuchwepheshe lokuphrinta kwe-3D kanye nalolo olunika amandla isilawuli seleveli ye-voxel kakhulu.Amasistimu okukhipha impahla asebenzisa amakhanda e-inkjet ukuze akhiphe okubalulekile ngezinkulungwane noma ngezigidi zamanozzle alawulwa ngedijithali.Kwezinye izimo, okokusebenza okubalulekile inqubo yejethi ihlanganiswe ne-extrusion noma i-binder jetting.Okuwukuphela kommeleli we-binder jetting technology ezitsheni zobumba inkampani yakwa-Israel i-XJet, njengoba kuboniswe kumephu engu-3dpbm yobuchwepheshe bokukhiqiza okungeziwe kwe-ceramic.Inqubo ye-XJet NanoParticle jetting isebenzisa ama-nanoparticles ensimbi axutshwe namanzi ukuze adale. isixazululo esingasebenza njengokubili okuqinile kanye noketshezi.Isixazululo sifafazwa endaweni eshisayo bese siqina njengoba amanzi ehwamuka, enze ingxenye eluhlaza.Ubuchwepheshe buyakwazi futhi ukusebenzisa izinto ezahlukene ezincibilika emanzini njengezisekelo, okwenza ukukhiqizwa kwamajiyometri ayinkimbinkimbi.Ingxenye eluhlaza ibe isishiswa esithandweni ngenqubo yangemva kokucubungula, okuholela ekubeni high density ingxenye.
Lolu cwaningo lwemakethe olwenziwa yi-3dpbm Research luhlinzeka ngokuhlaziywa okujulile kanye nesibikezelo sezithasiselo ze-ceramic…
Sisebenzisa amakhukhi ukuze sikunikeze ulwazi olungcono kakhulu lwe-inthanethi.Vuma ukuthi uyakwamukela ukusetshenziswa kwamakhukhi ngokuhambisana nenqubomgomo yethu yekhukhi.
Uma uvakashela noma iyiphi iwebhusayithi, ingase igcine noma ithole ulwazi esipheqululini sakho, ikakhulukazi ngendlela yamakhukhi.Lawula isevisi yakho yekhukhi lomuntu siqu lapha.


Isikhathi sokuthumela: Mar-18-2022