A. PCB Hoobkas txheej txheem txheej txheem

1. Ntau etching ntawm tooj liab ntawv ci

Cov ntawv ci tooj liab electrolytic 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). Cov ntawv ci tooj liab feem ntau yog galvanized tooj liab ntawv ci saum 70um, ntawv ci liab thiab 18um. Cov ntawv ci hauv qab no muaj qhov pib tsis muaj batch tooj liab tsis lees paub. Thaum cov qauv tsim hluav taws xob zoo dua li cov kab etching, yog tias cov ntawv ci tooj liab hloov pauv tab sis qhov kev hloov pauv tsis hloov, qhov no yuav ua rau cov ntawv ci tooj liab nyob hauv cov tshuaj etching ntev ntev.

Vim tias zinc yog Ameslikas yog cov hlau ua haujlwm, thaum tooj liab hlau ntawm PCB tau tsau rau hauv cov tshuaj etching rau lub sijhawm ntev, nws yuav ua rau muaj kev cuam tshuam ntau dhau ntawm cov kab, ua rau qee cov kab nyias nyias rov qab zinc txheej kom ua tiav thiab sib cais los ntawm lub substrate, uas yog, tooj liab hlau ntog tawm.

Lwm qhov xwm txheej yog tias tsis muaj teeb meem nrog PCB etching tsis, tab sis kev ntxuav thiab ziab tsis zoo tom qab etching, ua rau cov tooj liab xaim nyob ib puag ncig los ntawm cov tshuaj etching ntxiv ntawm PCB nto. Yog tias nws tsis ua tiav rau lub sijhawm ntev, nws tseem yuav ua rau ntau dhau ntawm tooj liab hlau sab etching thiab tsis lees paub. tooj liab.

Qhov xwm txheej no feem ntau yog tsom rau ntawm cov kab nyias nyias, lossis thaum huab cua ntub, cov teeb meem zoo sib xws yuav tshwm sim ntawm tag nrho PCB. Tshem cov tooj liab kom pom tias cov xim ntawm nws qhov chaw sib cuag nrog lub hauv paus txheej (lub npe hu ua roughened nto) tau hloov, uas txawv ntawm cov tooj liab ib txwm. Cov ntawv ci xim txawv. 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. Ib qho kev sib tsoo hauv zos tau tshwm sim hauv cov txheej txheem tsim khoom ntawm PCB, thiab cov hlau tooj liab tau sib cais los ntawm cov substrate los ntawm kev siv tshuab sab nraud.

Qhov kev ua haujlwm tsis zoo no muaj qhov teeb meem ntawm qhov chaw, thiab cov hlau tooj liab yuav pom tseeb twisted, los yog khawb los yog cuam tshuam cov cim nyob rau hauv tib txoj kev. Tshem tawm ntawm cov hlau hlau ntawm qhov tsis xws luag thiab saib ntawm qhov ntxhib ntawm cov ntawv ci tooj liab, koj tuaj yeem pom tias cov xim ntawm qhov ntxhib ntawm cov ntawv ci tooj liab yog qhov qub, yuav tsis muaj qhov tsis zoo ntawm corrosion, thiab lub zog tev tawm. daim ntawv tooj liab yog qhov qub.

3. Tsis tsim nyog PCB tsim Circuit Court

Kev tsim cov voj voog nyias nrog cov ntawv ci tooj liab tuab kuj yuav ua rau ntau dhau etching ntawm Circuit Court thiab pob tseg tooj liab.

B.Qhov laj thawj rau txheej txheem laminate

Nyob rau hauv ib txwm muaj xwm txheej, cov ntawv ci tooj liab thiab cov prepreg yuav ua tiav tag nrho ntev npaum li qhov kub siab ntawm cov laminate yog kub nias rau ntau tshaj 30 feeb, yog li cov xovxwm feem ntau yuav tsis cuam tshuam rau lub zog sib txuas ntawm cov ntawv ci tooj liab thiab substrate nyob rau hauv lub laminate. Txawm li cas los xij, nyob rau hauv cov txheej txheem ntawm stacking thiab stacking laminates, yog PP cov kab mob los yog tooj liab foil ntxhib nto puas, nws kuj yuav ua rau tsis txaus lub zog 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) los yog sporadic. tooj liab xov hlau poob, tab sis lub tev lub zog ntawm cov ntawv ci tooj liab nyob ze ntawm lub off-line tsis txawv txav.

C. Yog vim li cas rau laminate raw khoom:
1. Raws li tau hais los saum no, cov khoom siv electrolytic tooj liab zoo tib yam yog txhua yam khoom uas tau raug galvanized lossis tooj liab-plated rau ntawm cov ntaub plaub. Yog hais tias lub ncov tus nqi ntawm cov ntaub plaub yog txawv txav thaum lub sij hawm tsim khoom, los yog thaum galvanizing / tooj liab plating, lub plating siv lead ua ceg tsis zoo, ua rau cov ntawv ci tooj liab nws tus kheej lub zog tev tsis txaus. Tom qab cov ntawv xov xwm tsis zoo nias cov ntaub ntawv yog ua rau hauv PCB, cov hlau tooj liab yuav poob vim qhov cuam tshuam ntawm sab nraud quab yuam thaum nws yog ntsaws rau hauv lub tshuab hluav taws xob. Qhov kev tsis zoo ntawm cov tooj liab tsis zoo no yuav tsis muaj qhov pom tseeb sab corrosion thaum tev cov tooj liab hlau kom pom qhov ntxhib ntawm cov ntawv ci tooj liab (uas yog, qhov chaw sib cuag nrog lub substrate), tab sis lub zog tev ntawm tag nrho cov ntawv ci tooj liab yuav zoo heev. pluag.

2. Kev hloov pauv tsis zoo ntawm cov ntawv ci tooj liab thiab cov resin: Qee cov laminates nrog cov khoom tshwj xeeb, xws li HTG nplooj ntawv, tau siv tam sim no, vim hais tias cov txheej txheem resin txawv, tus neeg saib xyuas siv feem ntau yog PN resin, thiab cov khoom siv molecular saw yog yooj yim. Lub degree ntawm crosslinking yog tsawg, thiab nws yog ib qho tsim nyog yuav tsum siv cov ntawv ci tooj liab nrog lub ncov tshwj xeeb kom phim nws. Cov ntawv ci tooj liab siv hauv kev tsim cov laminates tsis sib xws nrog cov txheej txheem resin, ua rau tsis txaus tev lub zog ntawm cov ntawv hlau-clad hlau ntawv ci, thiab cov hlau tsis zoo tooj liab xaim thaum ntxig.