Thaum cov tooj liab hlau ntawm PCB poob, txhua lub PCB hom yuav sib cav tias nws yog ib qho teeb meem laminate thiab xav kom lawv cov nroj tsuag ntau lawm los poob qhov phem.Raws li ntau xyoo ntawm cov neeg siv khoom tsis txaus siab tuav kev paub, feem ntau yog vim li cas rau PCB tooj liab poob yog li hauv qab no:
1,PCB Hoobkas txheej txheem txheej txheem:
1), Copper foil yog dhau etched.
Electrolytic tooj liab ntawv ci siv nyob rau hauv kev ua lag luam feem ntau yog ib leeg-sab galvanized (feem ntau hu ua ashing foil) thiab ib sab tooj liab plating (feem ntau hu ua ntawv ci liab).Kev tsis lees txais tooj liab feem ntau yog galvanized tooj liab ntawv ci saum 70UM.Tsis muaj batch tooj liab tsis lees paub rau cov ntawv ci liab thiab ashing ntawv hauv qab 18um.Thaum cov qauv tsim hluav taws xob zoo dua li cov kab etching, yog tias cov ntawv ci tooj liab hloov pauv thiab cov etching tsis hloov, lub sijhawm nyob ntawm cov ntawv ci tooj liab hauv cov tshuaj etching yuav ntev dhau lawm.
Vim tias zinc yog cov hlau nquag, thaum tooj liab hlau ntawm PCB tau tsau rau hauv cov tshuaj etching ntev, nws yuav ua rau cov kab ntau dhau ntawm kev xeb, uas ua rau ua tiav cov tshuaj tiv thaiv ntawm qee txoj kab nyias rov qab zinc txheej thiab sib cais los ntawm cov khoom siv hlau. substrate, uas yog, tooj liab hlau ntog tawm.
Lwm qhov xwm txheej yog tias tsis muaj teeb meem nrog PCB etching tsis, tab sis cov dej ntxuav thiab ziab tom qab etching tsis zoo, uas ua rau cov hlau tooj liab tseem nyob ib puag ncig los ntawm cov tshuaj etching residual ntawm PCB chav dej.Yog tias nws tsis kho rau lub sijhawm ntev, nws tseem yuav ua rau ntau dhau ntawm sab corrosion ntawm cov hlau hlau thiab pov tooj liab.
Qhov xwm txheej no feem ntau yog tsom rau ntawm txoj kab nyias nyias los yog huab cua ntub.Cov teeb meem zoo sib xws yuav tshwm sim ntawm tag nrho PCB.Tshem tawm ntawm cov hlau hlau kom pom tias cov xim ntawm nws qhov chaw sib cuag nrog lub hauv paus txheej (piv txwv li qhov hu ua coarsened nto) tau hloov, uas txawv ntawm cov xim ntawm cov ntawv ci tooj liab.Qhov koj pom yog thawj tooj liab xim ntawm txheej hauv qab, thiab tev lub zog ntawm cov ntawv ci tooj liab ntawm cov kab tuab kuj zoo li qub.
2), Kev sib tsoo hauv zos tshwm sim hauv cov txheej txheem tsim khoom ntawm PCB, thiab cov hlau tooj liab tau sib cais los ntawm substrate los ntawm kev siv tshuab sab nraud.
Muaj teeb meem nrog qhov chaw ntawm qhov kev ua haujlwm tsis zoo no, thiab cov xaim tooj liab poob yuav muaj kev cuam tshuam pom tseeb, lossis khawb lossis cov cim cuam tshuam rau tib qho kev taw qhia.Tshem tawm ntawm cov hlau tooj liab ntawm qhov tsis zoo thiab saib cov ntawv xov tooj tooj liab ntxhib.Nws tuaj yeem pom tias cov xim ntawm cov ntawv ci tooj liab ntxhib yog qhov qub, yuav tsis muaj kev xeb, thiab lub zog stripping ntawm cov ntawv ci tooj liab yog qhov qub.
3), PCB Circuit Court tsim tsis tsim nyog.
Kev tsim cov kab nyias nyias nrog cov ntawv ci tooj liab tuab kuj yuav ua rau cov kab ntau dhau etching thiab tsis lees txais tooj liab.
2,Laminate txheej txheem yog vim li cas:
Nyob rau hauv ib txwm muaj xwm txheej, tsuav yog qhov kub ntawm qhov kub-kub ntawm lub laminate tshaj 30 feeb, cov ntawv ci tooj liab thiab cov ntawv kho semi-kho tau pib ua ke tag nrho, yog li kev nias feem ntau yuav tsis cuam tshuam rau lub zog sib txuas ntawm cov ntawv ci tooj liab thiab cov ntawv ci. substrate nyob rau hauv lub laminate.Txawm li cas los xij, nyob rau hauv cov txheej txheem ntawm lamination thiab stacking, yog tias PP muaj kuab paug los yog qhov ntxhib ntawm cov ntawv ci tooj liab puas, nws tseem yuav ua rau muaj kev sib txuas tsis txaus ntawm cov ntawv ci tooj liab thiab substrate tom qab lamination, uas ua rau qhov sib txawv ntawm qhov chaw (tsuas yog rau cov phaj loj xwb) los yog sporadic tooj liab hlau ntog tawm, tab sis yuav tsis muaj qhov txawv txav nyob rau hauv lub tev lub zog ntawm tooj liab ntawv ci nyob ze ntawm lub off-line.
3, Laminate raw khoom vim li cas:
1), Raws li tau hais los saum no, cov ntawv ci tooj liab zoo tib yam yog galvanized lossis tooj liab plated cov khoom ntawm cov ntaub plaub.Yog hais tias lub ncov tus nqi ntawm wool foil yog txawv txav thaum lub sij hawm tsim khoom, los yog cov txheej txheem siv lead ua cov ceg tsis zoo thaum lub sij hawm galvanizing / tooj liab plating, ua rau tsis txaus tev lub zog ntawm cov ntawv ci tooj liab nws tus kheej.Tom qab cov ntawv tsis zoo raug nias rau hauv PCB, cov hlau tooj liab yuav poob rau hauv kev cuam tshuam ntawm sab nraud quab yuam hauv plug-in ntawm lub Hoobkas hluav taws xob.Qhov kev muab tooj liab no tsis zoo.Thaum cov hlau hlau raug stripped, yuav tsis muaj qhov pom tseeb sab corrosion ntawm qhov ntxhib ntawm cov ntawv ci tooj liab (piv txwv li kev sib cuag nrog cov substrate), tab sis lub zog tev ntawm tag nrho cov ntawv ci tooj liab yuav tsis zoo heev.
2), Kev hloov pauv tsis zoo ntawm cov ntawv ci tooj liab thiab cov resin: rau qee cov laminates nrog cov khoom tshwj xeeb, xws li HTG daim ntawv, vim muaj cov txheej txheem sib txawv, tus neeg saib xyuas siv feem ntau yog PN resin.Lub molecular saw qauv ntawm cov resin yog qhov yooj yim thiab qhov kev sib txuas ntawm kev sib txuas yog qis thaum kho.Nws yog khi rau siv tooj liab ntawv nyiaj nrog tshwj xeeb ncov kom phim nws.Thaum cov ntawv ci tooj liab siv rau hauv kev tsim cov laminate tsis sib haum rau cov txheej txheem resin, ua rau tsis txaus tev lub zog ntawm cov ntawv ci hlau coated ntawm lub phaj, thiab cov hlau tsis zoo tooj liab poob thaum ntxig.
Post lub sij hawm: Aug-17-2021