Peb txhua tus tau ua cov sandcastles ntawm lub puam: cov phab ntsa muaj zog, cov pej thuam zoo nkauj, moats puv ntawm sharks.Yog tias koj zoo li kuv, koj yuav xav tsis thoob tias qhov dej me me tau sib koom ua ke - tsawg kawg txog thaum koj tus tij laug loj tshwm sim thiab ncaws nws hauv qhov tawg ntawm kev xyiv fab.
Tus kws ua lag luam Dan Gelbart kuj tseem siv dej rau cov ntaub ntawv sib cog lus, txawm hais tias nws tus qauv tsim muaj kev ruaj khov dua li lub hnub so ntawm lub puam.
Raws li tus thawj tswj hwm thiab tus tsim ntawm Rapidia Tech Inc., tus xa khoom ntawm hlau 3D tshuab luam ntawv hauv Vancouver, British Columbia, thiab Libertyville, Illinois, Gelbart tau tsim ib feem kev tsim khoom uas tshem tawm cov sij hawm siv cov kauj ruam uas muaj nyob rau hauv kev sib tw thev naus laus zis thaum ua kom yooj yim tshem tawm kev txhawb nqa..
Nws kuj tseem ua rau kev koom nrog ntau qhov chaw tsis yooj yim dua li tsuas yog muab tso rau hauv dej me ntsis thiab muab khi rau lawv ua ke - txawm tias cov khoom ua los ntawm cov txheej txheem tsim khoom.
Gelbart tham txog qee qhov sib txawv ntawm nws cov dej raws li cov txheej txheem thiab cov neeg siv cov hmoov hlau uas muaj 20% mus rau 30% wax thiab polymer (los ntawm ntim).Rapidia ob lub taub hau hlau 3D tshuab luam ntawv tsim cov tshuaj txhuam los ntawm cov hmoov hlau, dej thiab cov khoom siv cob rau hauv cov nyiaj li ntawm 0.3 txog 0.4%.
Vim li no, nws tau piav qhia, cov txheej txheem debinding xav tau los ntawm kev sib tw thev naus laus zis, uas feem ntau siv sijhawm ob peb hnub, raug tshem tawm thiab ib feem tuaj yeem xa ncaj qha mus rau qhov cub sintering.
Lwm cov txheej txheem feem ntau yog nyob rau hauv "ntev-sawv txhaj tshuaj molding (MIM) kev lag luam uas yuav tsum tau unsintered unsintered qhov chaw kom muaj cov feem ntau ntawm cov polymer los pab txhawb lawv tso tawm ntawm pwm," Gelbart hais."Txawm li cas los xij, tus nqi ntawm cov polymer xav tau los ua cov khoom sib txuas rau 3D luam ntawv yog qhov tsawg heev - ib feem kaum ntawm ib feem pua yog txaus rau feem ntau."
Yog li vim li cas haus dej?Raws li nrog peb cov piv txwv sandcastle siv los ua paste (hlau muab tshuaj nyob rau hauv cov ntaub ntawv no), cov polymer tuav cov khoom ua ke thaum lawv qhuav.Qhov tshwm sim yog ib feem nrog qhov sib xws thiab qhov nyuaj ntawm txoj kev taug kev chalk, muaj zog txaus los tiv thaiv kev sib dhos tom qab sib dhos, kev ua haujlwm maj mam (txawm tias Gelbart pom zoo tom qab sinter machining), sib dhos nrog dej nrog lwm yam tsis tiav, thiab xa mus rau qhov cub.
Kev tshem tawm degreasing tseem tso cai rau qhov loj, tuab-walled qhov chaw yuav tsum tau luam tawm vim tias thaum siv cov hmoov hlau impregnated nrog polymer, cov polymer tsis tuaj yeem "kub tawm" yog tias cov phab ntsa tuab dhau.
Gelbart tau hais tias ib lub chaw tsim khoom yuav tsum muaj phab ntsa tuab ntawm 6 hli lossis tsawg dua.“Yog li cia peb hais tias koj tab tom tsim ib feem txog qhov loj ntawm lub computer nas.Nyob rau hauv tas li ntawd, lub sab hauv yuav tsum tau hollow los yog tej zaum ib co hom mesh.Qhov no yog qhov zoo rau ntau daim ntawv thov, txawm tias lightness yog lub hom phiaj.Tab sis yog tias lub cev xav tau lub zog zoo li lub ntsia liaj qhov rooj lossis lwm qhov muaj zog, ces [hlau hmoov txhaj tshuaj] lossis MIM feem ntau tsis haum. "
Ib daim duab tshiab uas luam tawm manifold qhia tau hais tias qhov nyuaj sab hauv uas lub tshuab luam ntawv Rapidia tuaj yeem tsim tau.
Gelbart taw qhia ob peb lwm yam ntxwv ntawm lub tshuab luam ntawv.Cartridges uas muaj hlau muab tshuaj yog refillable thiab cov neeg siv xa rov qab rau Rapidia rau refilling yuav tau txais cov ntsiab lus rau tej yam khoom uas tsis siv.
Muaj ntau yam khoom siv, suav nrog 316 thiab 17-4PH stainless hlau, INCONEL 625, ceramic thiab zirconia, nrog rau tooj liab, tungsten carbide thiab ntau lwm cov ntaub ntawv hauv kev txhim kho.Cov ntaub ntawv txhawb nqa - cov khoom zais cia hauv ntau lub tshuab luam ntawv hlau - yog tsim los luam cov substrates uas tuaj yeem raug tshem tawm lossis "evaporated" los ntawm tes, qhib lub qhov rooj mus rau lwm qhov tsis tuaj yeem tsim tawm sab hauv.
Rapidia tau ua lag luam rau plaub xyoos thiab yog, lees paub, nyuam qhuav pib.Gelbart tau hais tias "Lub tuam txhab siv nws lub sijhawm los kho cov khoom," Gelbart hais.
Txog hnub tim, nws thiab nws pab neeg tau siv tsib lub tshuab, suav nrog ib qho ntawm Selkirk Technology Access Center (STAC) hauv British Columbia.Tus kws tshawb fawb Jason Taylor tau siv lub tshuab txij thaum lub Ib Hlis kawg thiab tau pom ntau qhov zoo dua ob peb lub tshuab luam ntawv STAC 3D uas twb muaj lawm.
Nws tau sau tseg tias muaj peev xwm "kua nplaum ua ke nrog dej" cov khoom nyoos ua ntej sintering muaj peev xwm zoo.Nws kuj paub txog cov teeb meem cuam tshuam nrog degreasing, suav nrog kev siv thiab pov tseg cov tshuaj.Thaum cov ntawv cog lus tsis pub tshaj tawm txwv tsis pub Taylor los ntawm kev sib qhia cov ntsiab lus ntawm ntau ntawm nws txoj haujlwm nyob rau ntawd, nws thawj qhov kev sim ua haujlwm yog ib yam uas peb coob tus yuav xav txog: daim ntawv 3D luam tawm.
"Nws tig tawm zoo tag nrho," nws hais nrog luag nyav.“Peb tau ua tiav lub ntsej muag, tho qhov rau lub ncej, thiab kuv tab tom siv tam sim no.Peb txaus siab rau qhov ua tau zoo ntawm kev ua haujlwm nrog cov txheej txheem tshiab.Raws li nrog rau tag nrho cov sintered qhov chaw, muaj ib co shrinkage thiab txawm me ntsis misalignment, tab sis lub tshuab yog txaus.Raws li txoj cai, peb tuaj yeem them nyiaj rau cov teeb meem no hauv kev tsim.
Daim ntawv tshaj tawm Additive tsom rau kev siv cov cuab yeej tsim khoom siv ntxiv hauv kev tsim khoom tiag.Cov neeg tsim khoom niaj hnub no tau siv 3D luam ntawv los tsim cov cuab yeej thiab cov khoom siv, thiab qee qhov txawm siv AM rau cov khoom ntim siab.Lawv cov dab neeg yuav nthuav tawm ntawm no.
Post lub sij hawm: Aug-23-2022