Cov thev naus laus zis UV raug suav hais tias yog cov thev naus laus zis "tab tom loj hlob" rau kev kho cov xim pleev xim rau kev lag luam. Txawm hais tias nws yuav yog qhov tshiab rau ntau tus neeg hauv kev lag luam thiab kev lag luam tsheb, nws tau muaj nyob rau ntau tshaj peb xyoo caum hauv lwm yam lag luam ...
Cov thev naus laus zis UV feem ntau suav hais tias yog cov thev naus laus zis "tab tom loj hlob" rau kev kho cov txheej txheem kev lag luam. Txawm hais tias nws yuav yog qhov tshiab rau ntau tus neeg hauv kev lag luam kev lag luam thiab kev lag luam tsheb, nws tau muaj ntau tshaj peb caug xyoo hauv lwm yam kev lag luam. Tib neeg taug kev ntawm cov khoom siv hauv pem teb vinyl uas muaj UV txhua hnub, thiab ntau tus ntawm peb muaj lawv hauv peb lub tsev. Cov thev naus laus zis kho UV kuj ua lub luag haujlwm tseem ceeb hauv kev lag luam khoom siv hluav taws xob. Piv txwv li, hauv cov xov tooj ntawm tes, cov thev naus laus zis UV siv rau hauv kev txheej cov yas, cov txheej txheem los tiv thaiv cov khoom siv hluav taws xob sab hauv, cov khoom sib txuas UV nplaum thiab txawm tias hauv kev tsim cov ntxaij vab tshaus xim pom ntawm qee lub xov tooj. Ib yam li ntawd, cov khoom siv fiber ntau thiab DVD / CD siv cov txheej txheem UV thiab cov nplaum xwb thiab yuav tsis muaj nyob raws li peb paub lawv niaj hnub no yog tias cov thev naus laus zis UV tsis tau ua rau lawv txoj kev loj hlob.
Yog li UV curing yog dab tsi? Qhov yooj yim tshaj plaws, nws yog ib qho txheej txheem los txuas (kho) cov txheej los ntawm cov txheej txheem tshuaj lom neeg pib thiab txhawb nqa los ntawm lub zog UV. Hauv tsawg dua ib feeb, cov txheej hloov pauv los ntawm cov kua mus rau cov khoom khov. Muaj qhov sib txawv tseem ceeb hauv qee cov khoom siv raw thiab kev ua haujlwm ntawm cov resins hauv cov txheej, tab sis cov no yog pob tshab rau tus neeg siv txheej.
Cov khoom siv siv ib txwm muaj xws li cov phom tsuag uas muaj cua tshuab, HVLP, lub tswb tig, txheej txheej ntws, txheej txheej dov thiab lwm yam khoom siv siv cov txheej txheej UV. Txawm li cas los xij, es tsis txhob mus rau hauv qhov cub cua sov tom qab thov txheej txheej thiab lub teeb ci ntsa iab, cov txheej txheej raug kho nrog lub zog UV uas tsim los ntawm cov teeb UV teeb tsa hauv txoj kev uas ci cov txheej txheej nrog lub zog tsawg kawg nkaus uas xav tau kom ua tiav kev kho.
Cov tuam txhab thiab cov lag luam uas siv cov yam ntxwv ntawm UV thev naus laus zis tau muab cov txiaj ntsig zoo kawg los ntawm kev muab cov txiaj ntsig zoo tshaj plaws thiab cov khoom lag luam kawg zoo dua thaum txhim kho cov txiaj ntsig.
Kev siv cov yam ntxwv ntawm UV
Cov cwj pwm tseem ceeb uas siv tau yog dab tsi? Ua ntej, raws li tau hais ua ntej lawm, kev kho kom sai heev thiab tuaj yeem ua tiav ntawm qhov kub thiab txias hauv chav. Qhov no tso cai rau kev kho kom zoo ntawm cov khoom siv uas rhiab rau cua sov, thiab txhua lub tsho tiv no tuaj yeem kho tau sai heev. Kev kho UV yog qhov tseem ceeb rau kev tsim khoom yog tias qhov kev txwv (lub raj mis-caj dab) hauv koj cov txheej txheem yog lub sijhawm kho ntev. Tsis tas li ntawd, qhov ceev tso cai rau cov txheej txheem nrog qhov chaw me dua. Piv txwv li, ib txheej ib txwm xav tau 30 feeb ci ntawm qhov ceev ntawm 15 fpm xav tau 450 ft ntawm conveyor hauv qhov cub, thaum lub txheej UV kho yuav xav tau tsuas yog 25 ft (lossis tsawg dua) ntawm conveyor.
Qhov kev sib txuas ntawm UV tuaj yeem ua rau muaj txheej txheej uas muaj zog heev. Txawm hais tias cov txheej txheej tuaj yeem tsim los ua kom nyuaj rau cov ntawv thov xws li hauv pem teb, lawv kuj tuaj yeem ua kom yooj ywm heev. Ob hom txheej txheej, tawv thiab yooj ywm, yog siv rau hauv kev siv tsheb.
Cov cwj pwm no yog cov tsav tsheb rau kev txhim kho thiab nkag mus ntawm UV thev naus laus zis rau cov txheej txheem tsheb. Tau kawg, muaj cov teeb meem cuam tshuam nrog UV kho ntawm cov txheej txheem kev lag luam. Qhov kev txhawj xeeb tseem ceeb rau tus tswv txheej txheem yog lub peev xwm los tso tawm txhua qhov chaw ntawm cov khoom nyuaj rau lub zog UV. Tag nrho cov nplaim ntawm cov txheej txheem yuav tsum tau raug rau lub zog UV tsawg kawg nkaus uas xav tau los kho cov txheej txheem. Qhov no yuav tsum tau ua tib zoo tshuaj xyuas ntawm qhov chaw, kev teeb tsa ntawm cov khoom, thiab kev npaj cov teeb kom tshem tawm cov cheeb tsam ntxoov ntxoo. Txawm li cas los xij, muaj kev txhim kho tseem ceeb hauv cov teeb, cov khoom siv raw thiab cov khoom tsim uas kov yeej feem ntau ntawm cov kev txwv no.
Tsheb Teeb Pom Kev Tom Ntej
Daim ntawv thov tshwj xeeb hauv tsheb uas UV tau dhau los ua cov thev naus laus zis txheem yog nyob rau hauv kev lag luam teeb pom kev zoo pem hauv ntej ntawm tsheb, qhov twg UV coatings tau siv rau ntau tshaj 15 xyoo thiab tam sim no tswj hwm 80% ntawm kev ua lag luam. Lub teeb taub hau yog tsim los ntawm ob lub ntsiab lus tseem ceeb uas yuav tsum tau coated - lub lens polycarbonate thiab lub tsev reflector. Lub lens xav tau ib tug heev, khawb-resistant txheej los tiv thaiv polycarbonate los ntawm cov huab cua thiab kev tsim txom lub cev. Lub tsev reflector muaj ib tug UV basecoat (primer) uas kaw lub substrate thiab muab ib tug ultra-du nto rau metallization. Lub lag luam reflector basecoat tam sim no yog yeej 100% UV kho. Cov laj thawj tseem ceeb rau kev siv yog kev txhim kho kev tsim khoom, me me txheej txheem footprint thiab zoo dua txheej-kev ua tau zoo.
Txawm hais tias cov txheej txheem siv tau kho UV, lawv muaj cov kuab tshuaj. Txawm li cas los xij, feem ntau ntawm cov overspray raug rov qab siv dua thiab rov ua dua tshiab rau hauv cov txheej txheem, ua tiav ze li ntawm 100% kev hloov pauv zoo. Lub hom phiaj rau kev txhim kho yav tom ntej yog kom nce cov khoom khov mus rau 100% thiab tshem tawm qhov xav tau rau oxidizer.
Cov Khoom Siv Yas Sab Nraud
Ib qho ntawm cov ntawv thov uas tsis tshua paub yog kev siv cov tshuaj pleev xim UV uas kho tau rau saum cov pwm uas muaj xim sib xyaw. Thaum xub thawj, cov txheej no tau tsim los txo qhov daj ntawm sab nraud ntawm cov pwm vinyl ntawm lub cev. Cov txheej no yuav tsum tawv thiab yoog tau kom tswj tau qhov lo tsis tawg los ntawm cov khoom ntaus cov pwm. Cov tsav tsheb rau kev siv cov txheej UV hauv daim ntawv thov no yog qhov ceev ntawm kev kho (qhov chaw me me ntawm cov txheej txheem) thiab cov khoom ua tau zoo dua.
SMC Lub Cev Vaj Huam Sib Luag
Cov tshuaj sib xyaw ua ke (SMC) yog cov khoom sib xyaw uas tau siv los ua lwm txoj hauv kev rau hlau tau ntau tshaj 30 xyoo. SMC muaj cov iav-fiber-filled polyester resin uas tau raug pov rau hauv cov ntawv. Cov ntawv no tom qab ntawd muab tso rau hauv lub pwm compression thiab tsim rau hauv lub cev vaj huam sib luag. SMC tuaj yeem xaiv vim tias nws txo cov nqi cuab yeej rau kev tsim khoom me me, txo qhov hnyav, muab kev tiv thaiv kev puas tsuaj thiab kev xeb, thiab muab kev ywj pheej ntau dua rau cov kws tsim qauv. Txawm li cas los xij, ib qho ntawm cov teeb meem hauv kev siv SMC yog qhov ua tiav ntawm qhov hauv lub Hoobkas sib dhos. SMC yog lub substrate porous. Thaum lub cev vaj huam sib luag, tam sim no ntawm lub tsheb, mus dhau lub qhov cub pleev xim clearcoat, qhov tsis zoo xim hu ua "porosity pop" tuaj yeem tshwm sim. Qhov no yuav xav tau tsawg kawg yog qhov kho qhov chaw, lossis yog tias muaj txaus "pops," rov pleev xim tag nrho ntawm lub cev plhaub.
Peb xyoos dhau los, txhawm rau tshem tawm qhov tsis zoo no, BASF Coatings tau muag cov khoom siv UV/thermal hybrid sealer. Qhov laj thawj rau kev siv cov tshuaj kho hybrid yog tias cov tshuaj overspray yuav kho tau rau ntawm cov chaw tsis tseem ceeb. Cov kauj ruam tseem ceeb los tshem tawm cov "porosity pops" yog kev raug rau lub zog UV, ua rau qhov sib txuas ntawm cov txheej txheem raug rau ntawm cov chaw tseem ceeb nce ntxiv. Yog tias cov khoom siv sealer tsis tau txais lub zog UV tsawg kawg nkaus, cov txheej txheem tseem dhau tag nrho lwm yam kev ua tau zoo.
Kev siv cov thev naus laus zis kho ob npaug hauv qhov xwm txheej no muab cov khoom tshiab los ntawm kev siv UV kho thaum muab qhov kev nyab xeeb rau cov txheej hauv daim ntawv thov muaj nqis siab. Daim ntawv thov no tsis yog tsuas yog qhia txog yuav ua li cas UV thev naus laus zis tuaj yeem muab cov khoom tshwj xeeb, nws kuj qhia tau tias lub kaw lus UV-kho tau siv tau rau ntawm cov khoom muaj nqis siab, ntim ntau, loj thiab nyuaj. Cov txheej no tau siv rau kwv yees li ib lab lub cev vaj huam sib luag.
OEM Clearcoat
Tej zaum, qhov kev lag luam thev naus laus zis UV uas pom tseeb tshaj plaws yog cov txheej txheem sab nraud ntawm lub cev tsheb Class A. Ford Motor Company tau nthuav tawm cov thev naus laus zis UV ntawm lub tsheb prototype, lub tsheb Concept U, ntawm North American International Auto Show hauv xyoo 2003. Cov txheej txheem txheej txheem uas tau ua pov thawj yog cov txheej txheem kho UV, tsim thiab muab los ntawm Akzo Nobel Coatings. Cov txheej txheem no tau siv thiab kho rau ntawm cov vaj huam sib luag ntawm lub cev tsheb ua los ntawm ntau yam khoom siv.
Ntawm Surcar, lub rooj sib tham txog kev siv tshuaj pleev xim thoob ntiaj teb uas tau muaj txhua ob xyoos hauv Fabkis, ob lub tuam txhab DuPont Performance Coatings thiab BASF tau muab cov lus qhia hauv xyoo 2001 thiab 2003 txog kev siv tshuab UV-curing rau cov tshuaj pleev xim rau tsheb. Lub hom phiaj ntawm txoj kev loj hlob no yog los txhim kho qhov teeb meem tseem ceeb ntawm kev txaus siab rau cov neeg siv khoom rau cov xim pleev xim - kev tiv thaiv khawb thiab kev puas tsuaj. Ob lub tuam txhab tau tsim cov tshuaj pleev xim hybrid-cure (UV & thermal). Lub hom phiaj ntawm kev ua raws li txoj kev siv tshuab hybrid yog los txo qhov nyuaj ntawm UV curing system thaum ua tiav cov khoom ua tau zoo.
Ob leeg DuPont thiab BASF tau teeb tsa cov kab tsav ntawm lawv cov chaw. Cov kab DuPont hauv Wuppertal muaj peev xwm kho tau tag nrho lub cev. Tsis yog cov tuam txhab txheej txheej yuav tsum ua kom pom kev ua tau zoo ntawm cov txheej txheej xwb, lawv kuj yuav tsum ua kom pom kev daws teeb meem ntawm cov kab pleev xim. Ib qho ntawm lwm cov txiaj ntsig ntawm UV / thermal curing uas DuPont hais yog tias qhov ntev ntawm qhov clearcoat ntawm cov kab tiav tuaj yeem txo qis los ntawm 50% tsuas yog txo qhov ntev ntawm lub qhov cub thermal.
Los ntawm sab engineering, Dürr System GmbH tau muab ib qho kev nthuav qhia txog lub tswv yim ntawm lub Hoobkas sib dhos rau UV curing. Ib qho ntawm cov yam tseem ceeb hauv cov tswv yim no yog qhov chaw ntawm cov txheej txheem UV curing hauv kab tiav. Cov kev daws teeb meem engineering suav nrog kev nrhiav cov teeb UV ua ntej, sab hauv lossis tom qab lub qhov cub thermal. Dürr xav tias muaj cov kev daws teeb meem engineering rau feem ntau ntawm cov txheej txheem xaiv uas cuam tshuam nrog cov qauv tam sim no hauv kev tsim kho. Fusion UV Systems kuj tau nthuav tawm ib lub cuab yeej tshiab - kev sim computer ntawm cov txheej txheem UV-curing rau lub cev tsheb. Qhov kev txhim kho no tau ua los txhawb thiab ua kom nrawm dua kev siv cov thev naus laus zis UV-curing hauv cov nroj tsuag sib dhos.
Lwm Cov Ntawv Thov
Kev tsim kho tseem txuas ntxiv mus rau cov yas txheej siv rau sab hauv tsheb, cov txheej rau cov log tsheb hlau thiab cov npog log, cov txheej txheem ntshiab rau saum cov khoom loj uas muaj xim thiab rau cov khoom hauv qab lub hood. Cov txheej txheem UV txuas ntxiv raug lees paub tias yog lub platform kho kom ruaj khov. Txhua yam uas hloov pauv tiag tiag yog tias cov txheej txheem UV tab tom txav mus rau cov khoom nyuaj dua, muaj nqis dua. Kev ruaj khov thiab kev ua tau ntev ntawm cov txheej txheem tau pom tseeb nrog daim ntawv thov teeb pom kev zoo pem hauv ntej. Nws pib ntau tshaj 20 xyoo dhau los thiab tam sim no yog tus qauv kev lag luam.
Txawm hais tias UV thev naus laus zis muaj qhov uas qee tus xav tias yog "txias", qhov kev lag luam xav ua nrog cov thev naus laus zis no yog los muab cov kev daws teeb meem zoo tshaj plaws rau cov teeb meem ntawm cov neeg ua tiav. Tsis muaj leej twg siv cov thev naus laus zis rau kev siv thev naus laus zis. Nws yuav tsum xa tus nqi. Tus nqi tuaj yeem los ntawm kev txhim kho kev tsim khoom ntsig txog kev ceev ntawm kev kho. Lossis nws tuaj yeem los ntawm cov khoom zoo dua lossis cov khoom tshiab uas koj tsis tau ua tiav nrog cov thev naus laus zis tam sim no. Nws tuaj yeem los ntawm qhov zoo dua thawj zaug vim tias cov txheej txheem qhib rau cov av qias neeg rau lub sijhawm luv dua. Nws tuaj yeem muab txoj hauv kev los txo lossis tshem tawm VOC ntawm koj qhov chaw. Cov thev naus laus zis tuaj yeem xa tus nqi. Kev lag luam UV thiab cov neeg ua tiav yuav tsum txuas ntxiv ua haujlwm ua ke los tsim cov kev daws teeb meem uas txhim kho cov kab hauv qab ntawm cov neeg ua tiav.
Lub sijhawm tshaj tawm: Lub Peb Hlis-14-2023
