Muaj plaub yam tseem ceeb ntawm cov txheej txheem rau3D luam ntawv, thiab cov txheej txheem tshiab feem ntau tshwm sim.Txhua txheej txheem tsim khoom siv cov khoom siv sib txawv los tsim cov khoom siv nrog cov khoom tshwj xeeb uas ua haujlwm zoo rau cov ntawv thov tshwj xeeb.
1. muaj photopolymerization
Txo polymerization ntawm cov kua photopolymers kho los ntawm photosensitive polymerization yog ib qho ntawm cov txheej txheem tsim khoom ua ntej tshaj plaws.Precise uv txheej los ntawm txheej curing thiab solidification ntawm nyias txheej ntawm photosensitive resins.Txoj kev no, hu ua stereophotography, tau ua lag luam nyob rau hauv nruab nrab-1980s.Nrog tus thawj3D luam ntawvthev naus laus zis hauv siab, stereolithography qhov chaw yog siv los nqis peev hauv kev siv xws li cov qauv casting, prototypes thiab lub tswv yim qauv.Lwm qhov tseem ceeb thev naus laus zis yog digital teeb ua haujlwm.
2. cov khoom siv extrusion
Hom kev tsim khoom additive no faib cov khoom los ntawm cua sov lub nozzle los yog extruding lub taub hau.Tom qab nteg ib txheej, nqis los tsim lub platform, los yog txav lub taub hau extrusion mus sau cov txheej tom ntej rau saum txheej dhau los.Cov khoom siv raw feem ntau yog cov thermoplastic filament, qhov txhab ntawm ib lub spool thiab melted thaum extruded.Ib qho txheej txheem uas siv txoj kev no yog molten deposition.Hom kev tsim khoom siv ntxiv no tuaj yeem siv rau kev tsim khoom, cov cuab yeej tsim khoom, thiab cov qauv ua haujlwm vim muaj peev xwm tsim nrog cov khoom siv thermoplastic.
3. hmoov txheej fusion
Hmoov txheej fusion qhov hla ntu ntawm cov hmoov fused los ntawm thermal zog.Thaum tshav kub kub melts cov khoom hmoov thiab solidifies thaum nws txias.Nrog cov polymers, cov hmoov tsis siv nyob ib puag ncig yog siv los tuav qhov chaw, yog li tsis tas yuav muaj kev txhawb nqa ntxiv.Rau cov khoom hlau, cov thauj tog rau nkoj feem ntau yuav tsum tau txuas cov khoom mus rau lub txaj luam ntawv thiab txhawb nqa kev teeb tsa qis.Laser sintering tau ua lag luam hauv xyoo 1992, ua raws li kev kub ceev sintering thiab, tsis ntev los no, ntau lub dav hlau fusion.Hauv kev tsim cov hlau, cov hlau ncaj qha laser sintering thiab electron beam melting molding (EBM) yog cov tshuab ua lag luam nrov heev.
4. Cov khoom siv txau
Cov ntaub ntawv txhaj tshuaj yog ib qho ntawm cov txheej txheem tsim khoom nrawm tshaj plaws uas siv ntau lub taub hau luam ntawv.Additive manufacturing deposits droplets ntawm kev tsim cov ntaub ntawv txheej los ntawm txheej.Cov khoom siv txhaj tshuaj tuaj yeem luam tawm ntau cov khoom siv thiab cov khoom siv qib.Cheebtsam yog tsim nyob rau hauv sib txawv proportions ntawm txhua yam khoom, uas ua rau ntau yam xim thiab ntau yam khoom siv.Feem ntau, cov tshuab no siv photopolymers, waxes thiab cov ntaub ntawv digital uas muaj ntau yam photopolymers sib xyaw thiab txau ib txhij.Cov txuj ci xws li kev ua qauv dav hlau ntau thiab dav hlau yog siv los tsim cov qauv tsim sai, cov qauv tswv yim, peev casting qauv, thiab cov qauv kho mob anatomical tiag tiag.
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Post lub sij hawm: Jun-06-2022