Lub teeb curing molding thev naus laus zis (SLA) yog cov cuab yeej siv hluav taws xob sai sai uas tau tshwm sim thawj zaug thiab paub txog kev lag luam hauv ntiaj teb, thiab nws kuj yog ib qho ntawm qhov tob tshaj plaws thiab dav siv cov cuab yeej siv hluav taws xob sai. Nws tsuas yog siv cov photosensitive resin ua cov khoom siv raw, thiab siv cov yam ntxwv uas cov kua photosensitive resin yuav kho tau sai heev nyob rau hauv ultraviolet laser beam irradiation. Cov photosensitive resin feem ntau yog kua, thiab nws tam sim ntawd pib cov tshuaj tiv thaiv polymerization thiab ua tiav kev kho thaum irradiated nrog ib qho wavelength ntawm ultraviolet lub teeb (250 nm txog 400 nm). SLA tsom rau ntawm qhov chaw ntawm cov khoom siv photocurable los ntawm kev siv lub teeb ci ultraviolet nrog ib lub sijhawm tshwj xeeb thiab kev siv zog los ua kom ruaj khov ntawm qhov taw tes mus rau kab thiab kab mus rau saum npoo, yog li ua tiav cov duab kos ntawm cov txheej txheem hla ntu.
SLA txheej txheem luam ntawv
1. Tswj lub tshuab luam ntawv kom tso dej rau hauv qhov siab hauv qab ntawm cov resin nto, kom lub vijtsam npog nrog cov khoom siv.
2. Lub khoos phis tawj tswj hwm lub laser thiab galvanometer, thiab siv UV laser los luam theej duab hla ntu ntawm qhov tam sim no yuav tsum luam tawm, thiab ua kom ruaj khov ntawm cov khoom uas yuav tsum tau luam tawm los ntawm cov kua ua kua.
3. Tom qab kev soj ntsuam tiav lawm, lub vijtsam tso rau ntawm qhov siab, lub scraper nthuav tawm ib txheej ntawm cov khoom (lub luag haujlwm tseem ceeb yog khawb thiab sau cov khoom loj loj), rov ua cov kauj ruam 2 saum toj no kom txog thaum luam ntawv tiav.
4. Tom qab luam ntawv tiav lawm, tshem tawm cov khoom luam tawm, uas yuav tsum tau ntxuav nrog ethanol kiag li thiab kho los ntawm ultraviolet lub teeb.
Cov yam ntxwv ntawm cov txheej txheem SLA
Cov ntaub ntawv luam tawm ntawm SLA yog cov kua roj hmab. Thaum lub sij hawm kho, cov monomer carbon chains uas ua rau cov kua resin yuav qhib tau los ntawm UV laser thiab ua ib yam khoom, yog li tsim ib tug muaj zog thiab indestructible daim ntawv cog lus ntawm ib leeg. Cov txheej txheem photopolymerization yog irreversible, yog li SLA qhov chaw tsis tuaj yeem hloov mus rau lub xeev ua kua, thiab lawv hlawv ntau dua li yaj thaum rhuab.
Qhov siab ntawm txheej luam ntawv hauv SLA txheej txheem yog nyob nruab nrab ntawm 25 thiab 100 microns. Cov txheej txheem qis dua tuaj yeem ntes cov duab nkhaus nkhaus, tab sis yuav ua rau lub sijhawm tsim (thiab nqi) thiab muaj peev xwm luam ntawv tsis tiav. Ib txheej qhov siab ntawm 100 microns yog haum rau feem ntau daim ntaub ntawv.
Qhov chaw tsim kho yog lwm qhov parameter uas tseem ceeb heev rau tus tsim qauv. Qhov tsim loj yog nyob ntawm hom SLA tshuab. Bering 3D's supply chain system muaj yuav luag txhua yam ntawm SLA cov cuab yeej ntawm kev ua lag luam, nrog rau tag nrho cov kev pab cuam ntawm thaj chaw tsim kho (luam ntawv loj) thiab cov ntaub ntawv luam tawm.
Txhawb nqa cov txheej txheem SLA
SLA txoj cai txheej txheem luam ntawv txiav txim siab tias yuav tsum muaj cov qauv txhawb nqa thaum lub sijhawm luam ntawv. Cov qauv kev txhawb nqa yog luam tawm nrog tib yam khoom raws li ib feem thiab yuav tsum tau muab tshem tawm manually tom qab luam ntawv. Cov kev taw qhia uas ib feem yog luam tawm txiav txim qhov chaw thiab tus naj npawb ntawm kev txhawb nqa. Qhov chaw luam ntawv yog los kho qhov chaw kom zoo kom qhov muag pom qhov tseem ceeb tsis tiv thaiv cov qauv kev txhawb nqa.
Hauv qab-up thiab sab saum toj-down SLA tshuab luam ntawv siv kev txhawb nqa yog txawv:
Hauv cov tshuab luam ntawv SLA saum toj saud, kev txhawb nqa yuav tsum tau ua kom raug luam tawm overhangs thiab txuas hniav (qhov tseem ceeb tshaj lub kaum sab xis feem ntau yog 30 degrees). Cov khoom tuaj yeem taw qhia ntawm txhua txoj haujlwm, tab sis cov kev taw qhia sib txawv yuav ua rau lub sijhawm luam ntawv sib txawv thiab cov khoom zoo. Lawv feem ntau yog luam tawm hauv cov duab tiaj tus kom txo qis qhov kev txhawb nqa thiab tag nrho cov txheej txheem.
Hauv qab-up SLA tshuab luam ntawv, qhov xwm txheej nyuaj dua. Overhangs thiab txuas hniav tseem yuav tsum tau txais kev txhawb nqa, tab sis kev txo qis ntawm qhov chaw hla ntawm txhua txheej yog qhov tseem ceeb tshaj plaws. Lub zog siv rau ntawm qhov chaw thaum lub sij hawm tev tawm tuaj yeem ua rau ib feem kom tshem tawm ntawm lub platform tsim. Cov rog no yog proportional rau qhov chaw hla ntu ntawm txhua txheej. Yog li ntawd, qhov chaw yog taw qhia ntawm lub kaum sab xis thiab txo kev txhawb nqa dhau los ua qhov teeb meem loj.
Qhov zoo ntawm cov txheej txheem SLA
(1) SLA tuaj yeem tsim cov khoom nrog qhov tseeb qhov tseeb thiab cov ntsiab lus nyuaj.
(2) SLA qhov chaw muaj lub ntsej muag du heev, ua rau lawv zoo tagnrho rau cov qauv tsim.
(3) Cov ntaub ntawv tshwj xeeb SLA tuaj yeem siv tau, xws li pob tshab, hloov pauv thiab castable resin.