Tom qab ua cov txheej xwm ntawm ceramic manufacturing
Nrog rau kev nce qib sai ntawm "Ua hauv Tuam Tshoj 2025", kev lag luam ceramic tsim kuj tau hloov pauv thiab hloov pauv mus rau "kev txawj ntse thiab digitalization". Tom qab xyoo ntawm txoj kev loj hlob, 3D tshuab luam ntawv tau ua lub luag haujlwm tseem ceeb hauv cov txheej txheem ntawm cov ceramics, thiab cov tshuab luam ntawv ceramics raws li ntau lub tswv yim tau ua tiav zoo. Txawm li cas los xij, vim qhov tshwj xeeb ntawm cov ntaub ntawv ceramic, lawv tsis tuaj yeem sintered ncaj qha xws li hlau hauv cov txheej txheem ntawm 3D luam ntawv. Cov txheej txheem tsim khoom dav dav yog 3D luam ntawv, ua raws li tom qab ua tiav degreasing thiab sintering. Cov npe hauv qab no thiab txheeb xyuas cov xwm txheej quo ntawm kev ua lag luam tom qab ua tiav rau ceramic 3D luam ntawv.
Nrog rau kev txhim kho sai ntawm cov khoom siv thev naus laus zis, khoos phis tawj-pab tsim (CAD), khoos phis tawj pabcuam kev tsim khoom (CAM), thiab lwm yam kev siv thev naus laus zis, ceramic 3D tshuab luam ntawv kuj tseem txhim kho tas li. Txawm li cas los xij, raws li qhov tshwj xeeb ntawm cov khoom siv ceramic, nrog rau kev tshawb fawb thiab thev naus laus zis tam sim no, cov khoom siv ceramic tsim los ntawm PDM, SLA, lossis lwm txoj hauv kev yuav tsum tau txhais ua "ceramic cev". Ceramic 3D tshuab luam ntawv tiag tiag hloov cov ceramics hauv cov txheej txheem ceramic. Nyob rau hauv cov tsoos "forming txheej txheem", tom qab lub "forming txheej txheem", cov txheej txheem xws li "degreasing" thiab "sintering" yog tseem yuav tsum tau. Tsuas yog tom qab "sintering txheej txheem" ua tiav, cov hmoov av ceramic tuaj yeem ua kom tau raws li qhov yuav tsum tau ua.
Nyob rau hauv cov txheej txheem ceramic 3D luam ntawv, noj cov khoom siv alumina luam ntawv tam sim no ua piv txwv, cov khoom siv hluav taws xob photosensitive ntxiv rau cov ceramic slurry raws li kev kho nruab nrab thiab kho tau los ntawm laser irradiation nrog lub wavelength tshwj xeeb thiab lub zog, yog li paub txog 3D luam ntawv (moulding. ) txheej txheem ntawm ceramics.
Photosensitive resin ua ib qho nyiaj ntxiv rau ntau dua 25 feem pua ntawm cov khoom loj thiab 45-50 feem pua ntawm cov ntim hauv tag nrho cov khoom luam ntawv. Tom qab kev sim, qhov shrinkage tus nqi ntawm 3D luam ntawv ceramic feem feem ntau yog li 20 feem pua lossis siab dua. Txawm li cas los xij, qhov sib piv loj tom qab molding los ntawm cov txheej txheem molding ib txwm muaj xws li kev txhaj tshuaj molding thiab nias yog feem ntau txog 3 feem pua, thiab qhov shrinkage feem ntau yog li 10 feem pua (siv alumina ua piv txwv). Cov shrinkage ntau dhau ua rau cov kev xav tau siab dua rau kev tswj qhov ntev thiab tus cwj pwm ntawm cov nqi ceramic. Yog li ntawd, cov kev hloov pauv yuav tsum tau ua nyob rau hauv cov txheej txheem tom qab kho ntawm 3D luam ntawv ceramic khoom.
Tam sim no, txij li thaum ceramic 3D luam ntawv thev naus laus zis tseem nyob hauv kev tshawb fawb thiab kev tsim kho, kev sim me me, thiab kev siv tshwj xeeb hauv kev lag luam, tsis muaj qhov xwm txheej loj loj. Yog li ntawd, cov neeg siv kawg ntawm ceramic 3D printers feem ntau txhawb kev sim me me hluav taws xob cua sov rauv ua cov khoom siv tom qab ua cov khoom siv thermal. Feem ntau ntawm cov cuab yeej no tau tsim thiab tsim los siv cov txheej txheem kev npaj cov ceramics, nrog cov qauv yooj yim, thiab tej zaum yuav tsis muaj peev xwm sau thiab txheeb xyuas cov ntaub ntawv; feem ntau cov txheej txheem tom qab ua tiav yog tsom rau kev tshawb fawb thiab kev tsim kho cov ntaub ntawv. Rau ceramic 3D luam ntawv thev naus laus zis, ceramic sintering tshuab Tos tsis paub. Kev txiav txim siab los ntawm kev tawm tswv yim kev lag luam tam sim no, "cov nyhuv chim" ntawm ceramic 3D luam ntawv yog daig hauv cov txheej txheem tom qab ua tiav. Nrog rau kev siv cov additives siab, qhov loj shrinkage tus nqi ncaj qha ua rau tawg, lub zog tsis sib xws, thiab discoloration. Hais txog cov teeb meem tom qab ua tiav, qhov no kuj tau ua rau ncua sijhawm nkag ntawm ceramic 3D tshuab luam ntawv rau hauv ntau lawm.
Nws tuaj yeem pom qhov tseem ceeb ntawm inert cua tiv thaiv sintering hauv cov txheej txheem tom qab ua tiav ntawm ceramic 3D luam ntawv. Tom qab kev sim, peb pom tias yog cov txheej txheem sintering ib txwm siv rau sinter ceramic 3D luam tawm qhov chaw, txawm tias qhov cua sov qeeb npaum li cas, cov khoom yuav muaj ntau dua los yog tsawg dua cov kab nrib pleb, thiab cov kab nrib pleb tuaj yeem pom thoob plaws hauv lub cev hauv lub tshuab hluav taws xob. microscope.
Tom qab siv kev tiv thaiv roj inert, tam sim no tswj tau qhov kub thiab txias nce yog li ntawm 0.8 ~ 1 degrees ib feeb, thiab yuav tsum muaj huab cua / inert cua. Nyob rau theem tom ntej, tag nrho sintering ceev yuav maj mam nce, thiab kev sib xyaw degreasing thiab sintering cua rauv yuav siv los ua cov khoom siv tshwj xeeb rau ceramic 3D luam ntawv qhov chaw kom txo tau lub sijhawm ua haujlwm thiab txo qhov nyuaj ntawm kev ua haujlwm.
Ib txoj kev npaj rau qhov xwm txheej
Hauv cov txheej txheem tom qab ua tiav, kev tshem tawm cov roj organic tseem ceeb tshwj xeeb. Tsis tiav degreasing yuav ncaj qha ua rau muaj teeb meem xws li cov khoom tawg, dyeing, thiab lub zog puas. Rau qhov no, cov cuab yeej degreasing nrog lub tshuab nqus tsev yuav raug siv los txo cov oxidation ntawm cov organic teeb meem hauv cov txheej txheem degreasing ib txwm. Cov tshuaj tiv thaiv tau hloov mus rau cov tshuaj tiv thaiv thermal cracking, siv cov roj inert los tsim cov cua tiv thaiv hauv lub chamber thaum lub sij hawm degreasing txheej txheem. Thiab siv cov cuab yeej ntsuas ntsuas ntsuas kub, siab, cov ntsiab lus oxygen, thiab lwm yam hauv lub sijhawm tiag tiag, thiab thaum kawg tsim cov ntawv txheeb xyuas los kho cov txheej txheem degreasing ntawm tib hom khoom.
Raws li qhov xwm txheej tam sim no ntawm ceramic 3D luam ntawv tom qab kev ua lag luam, raws li lub hauv paus ntawm ceramic 3D luam ntawv muaj peev xwm, kev pabcuam kev sib koom ua ke degreasing, sintering, cov ntaub ntawv kaw, cov ntaub ntawv tsom xam, thiab kev sim cov roj ceramic ntsuab lub cev tau ua. tsim los muab ceramics 3D luam ntawv kawg cov neeg siv khoom thiab cov neeg tsim khoom muab kev sib xyaw degreasing, sintering txheej txheem, nto sib tsoo, txheej txheem kev txheeb xyuas, thiab lwm yam kev pabcuam tom qab luam ntawv, txhawm rau txhawb kev ua tiav ntawm cov txheej txheem ntau lawm ntawm ceramic 3D luam ntawv.