Nyob rau hauv photopolymer additive manufacturing, kev ua tau zoo ntawm 3D resins thiab qhov zoo ntawm cov khoom kawg yog nyob ntawm tsis tsuas yog nyob rau hauv lub formulation ntawm cov khoom, tab sis kuj nyob rau hauv lub lag luam cov tswv yim siv thaum lub sij hawm daim ntawv thov. Kev paub txog kev siv txuj ci siv tau zoo tuaj yeem txo qhov tsis xws luag, txhim kho qhov tseeb, thiab txuas ntxiv lub neej ntawm cov khoom thiab cov khoom siv. Cov hauv qab no qhia txog cov txheej txheem tseem ceeb ntawm kev siv los ntawm cov yam xws li kev tswj hwm ib puag ncig, kev kho cov cuab yeej siv, kev ua qauv, tom qab- ua tiav, thiab kev tswj hwm kev nyab xeeb rau cov kws tshaj lij kev lag luam siv.
Kev tswj xyuas meej ntawm ib puag ncig ib puag ncig yog ib qho ntawm cov txuj ci tseem ceeb. Resins yog heev rhiab heev rau qhov kub thiab txias. Qhov zoo tshaj plaws kev khiav hauj lwm ib puag ncig kub yog 20℃~ 28 degree, thiab av noo yog tswj ntawm 40% ~ 60%. Tsis tshua muaj kub nce viscosity, ua rau tsis sib xws txheej kis los yog txo adhesion; kub siab heev ua rau ua ntej -kho, ua rau lub nozzle los yog molding platform thaiv. Hais txog teeb pom kev zoo, lub hnub ci ncaj qha thiab lub teeb muaj zog ultraviolet yuav tsum zam. Qhov chaw ua haujlwm yuav tsum siv lub teeb- thaiv cov ntaub thaiv los yog qis- UV teeb, thiab lub teeb thaiv kev tiv thaiv yuav tsum muab tso rau saum lub tank resin kom txo tau qhov kev pheej hmoo ntawm kev tsis tuaj yeem polymerization.
Kev npaj cov khoom siv thiab lub platform ncaj qha cuam tshuam rau thawj - txheej txheej txheej. Ua ntej luam ntawv, xyuas kom cov txheej txheem txheej txheem yog theem, tswj qhov kev ncua deb ntawm kwv yees li 0.1 hli ntawm lub nozzle lossis tso zaj duab xis thiab lub platform (qhov no tuaj yeem kuaj xyuas siv A4 daim ntawv xeem txoj kev). Rau qhov sib txawv resin viscosities, kho tus kws kho mob hniav lossis trough lifting ceev kom tsim nyog los xyuas kom meej cov kua ua kua. Thaum siv cov khoom tshiab thawj zaug los yog hloov cov khoom siv, nws raug nquahu kom sim luam tawm nrog cov qauv me me los saib xyuas thawj - txheej adhesion. Yog hais tias warping los yog tev tawm, ua kom sov lub txaj sov los yog ntxiv ib lub hauv paus / tiab los txhim kho adhesion.
Optimizing tus qauv cov ntaub ntawv yog ib kauj ruam tseem ceeb hauv kev txhim kho qhov ua tau zoo. Ua ntej slicing, xyuas thiab kho qhov, qhov tsis raug, thiab tus kheej - kev sib tshuam hauv cov qauv kom tsis txhob muaj kev sib tsoo lossis interlayer misalignment thaum luam ntawv. Teem kev txhawb nqa kom tsim nyog raws li tus qauv qauv: thaj chaw uas muaj lub kaum sab xis qis dua 45℃yuav tsum tau txhawb nqa; tsob ntoo-zoo li kev txhawb nqa tuaj yeem siv rau cov kab nyias nyias lossis nyias- cov qauv phab ntsa kom txo tau cov ncej- ua haujlwm nyuaj. Kev txhawb nqa ceev yog feem ntau tswj ntawm 10% thiab 20%; siab heev ib tug ceev yuav ua rau kom tshem tawm nyuaj thiab tej zaum yuav ua rau lub nto. Txheej thickness xaiv yuav tsum sib npaug precision thiab efficiency. Rau cov khoom me me, txheej tuab ntawm 0.05mm ~ 0.10mm yog qhov tsim nyog, thaum rau cov qauv zoo tib yam, nws tuaj yeem nce mus rau 0.15mm ~ 0.20mm kom ceev cov txheej txheem.
Tiag -Lub sijhawm saib xyuas cov txheej txheem luam ntawv tuaj yeem tiv thaiv teeb meem ua ntej lawv tshwm sim. Thawj txheej yuav tsum tau luam tawm ntawm qhov txo qis ntawm 15mm / s ~ 30mm / s kom paub meej txaus adhesion. Thaum lub sij hawm tus txheej txheem, xyuam xim rau cov kua nto rau ntab impurities los yog solidified lumps, thiab ntxuav tam sim ntawd kom tsis txhob muaj kev puas tsuaj rau tus kws kho hniav hniav los yog cuam tshuam cov txheej thickness. Yog hais tias stringing, txheej migration, los yog misalignment tshwm sim, xyuas cov uniformity ntawm lub teeb qhov chaw, lub cev muaj zog synchronization, thiab siv tensioner, thiab zoo - kho lub sij hawm raug thiab pullback tsis raws li cov yam ntxwv resin.
Kev tshaj tawm kom raug- cov txheej txheem ua tiav txiav txim siab qhov khoom kawg ntawm qhov tshwm sim. Rau kev ntxuav, nws raug nquahu kom siv isopropyl cawv (IPA) lossis cov tshuaj ntxuav tu tshwj xeeb, sib xyaw ua kom ntub dej thiab txhuam kom tshem tawm cov khoom tsis huv. Lub sij hawm ntxuav yuav tsum tsis txhob ntev heev kom tsis txhob o ntawm qhov kho qhov chaw. Thaum cov dej-cov dej uas ntxuav tau yooj yim dua, cov dej kub thiab kev siv tshuaj yaug tseem yuav tsum tau tswj. Kev kho mob thib ob yuav tsum tau ua raws li kev sib tw UV wavelengths thiab lub zog kom tsis txhob muaj ntau dhau, uas tuaj yeem ua rau yellowing lossis embrittlement. Cov khoom tiav tom qab kho yuav tsum muab cia kom deb ntawm lub teeb kom tiv thaiv kev ua haujlwm tsis zoo los ntawm kev raug ultraviolet ntev ntev.
Kev nyab xeeb thiab kev tswj cov khoom tseem ceeb sib npaug. Hnav tshuaj lom neeg- hnab looj tes tiv thaiv thiab tsom iav thaum lub sijhawm ua haujlwm, tswj qhov cua kom zoo, thiab txo qhov kev pheej hmoo ntawm kev nqus cov tshuaj tsis haum. Thaum qhib, cov resin yuav tsum tau siv sai li sai tau thiab muab khaws cia rau hauv qhov chaw kaw, lub teeb - pov thawj, thiab ya raws- pov thawj kom tiv thaiv kev kis kab mob thiab kev ua haujlwm tsis zoo. Cov khib nyiab pov tseg thiab cov tshuaj ntxuav tu yuav tsum tau sau raws li kev cai ib puag ncig thiab yuav tsum tsis txhob muab pov tseg ntawm kev txiav txim siab.
Hauv cov ntsiab lus, kev siv tau zoo ntawm 3D resins suav nrog kev tswj hwm tag nrho cov saw ntawm ib puag ncig, khoom siv, qauv, txheej txheem, thiab tom qab- ua tiav. Los ntawm cov kev hloov kho thiab cov kev paub dhau los, molding kev vam meej thiab cov khoom zoo tuaj yeem txhim kho tau zoo, muab kev lav zoo rau kev ua haujlwm ruaj khov thiab kev tsim kho tshiab ntawm photopolymer additive manufacturing.
