Nrog rau txoj kev loj hlob sai ntawm kev lag luam hluav taws xob, PCB thaiv kev lag luam tau dhau los ua ntau dua. Feem ntau PCB cov tuam txhab siv cov yeeb yaj kiab qhuav kom tiav cov duab hloov pauv, thiab kev siv cov yeeb yaj kiab qhuav tau dhau los ua neeg nyiam. Txawm li cas los xij, kuv tseem ntsib ntau yam teeb meem hauv cov txheej txheem kev pab cuam tom qab muag. Cov neeg siv khoom muaj ntau qhov kev nkag siab yuam kev thaum siv cov yeeb yaj kiab qhuav, uas tau sau tseg ntawm no rau kev siv.

Yuav ua li cas txhim kho PCB cov teeb meem qhuav zaj duab xis

1. Muaj qhov nyob hauv daim npog ntsej muag qhuav
Ntau tus neeg siv khoom ntseeg tias tom qab lub qhov tshwm sim, qhov kub thiab txias ntawm cov yeeb yaj kiab yuav tsum tau nce ntxiv los txhim kho nws txoj kev sib txuas. Qhov tseeb, qhov kev pom no tsis raug, vim tias cov kuab tshuaj ntawm cov txheej txheem tiv thaiv yuav evaporate ntau dhau tom qab qhov kub thiab txias siab dhau lawm, uas yuav ua rau dryness. Cov zaj duab xis ua nkig thiab thinner, thiab lub qhov yog yooj yim tawg thaum lub sij hawm kev loj hlob. Peb yuav tsum ib txwm tuav lub toughness ntawm cov zaj duab xis qhuav. Yog li ntawd, tom qab lub qhov tshwm sim, peb tuaj yeem txhim kho los ntawm cov ntsiab lus hauv qab no:

1. Txo qhov kub thiab txias ntawm zaj duab xis

2. Txhim kho qhov drilling thiab tho

3. Ua kom lub zog raug

4. Txo kev loj hlob siab

5. Tom qab ua cov yeeb yaj kiab, lub sijhawm nres tsheb yuav tsum tsis txhob ntev dhau, kom tsis txhob ua rau cov yeeb yaj kiab semi-kua yeeb yaj kiab hauv lub ces kaum sib kis thiab nyias nyob rau hauv qhov kev txiav txim siab.

6. Tsis txhob ncab cov zaj duab xis qhuav nruj heev thaum lub sijhawm pasting

Qhov thib ob, seepage plating tshwm sim thaum qhuav zaj duab xis electroplating
Yog vim li cas rau qhov permeation yog tias cov zaj duab xis qhuav thiab tooj liab clad board tsis ruaj khov, yog li cov txheej txheem plating yog sib sib zog nqus, thiab “phem tsis zoo” ib feem ntawm cov txheej yuav thicker. Qhov permeation ntawm feem ntau PCB manufacturers yog tshwm sim los ntawm cov ntsiab lus hauv qab no:

1. Kev tawm dag zog yog siab dhau lossis qis

Nyob rau hauv ultraviolet lub teeb irradiation, lub photoinitiator uas tau nqus lub teeb lub zog yog decomposed rau hauv dawb radicals pib ib tug photopolymerization cov tshuaj tiv thaiv los tsim ib lub cev zoo li molecule uas yog insoluble nyob rau hauv ib tug dilute alkali tov. Thaum qhov raug tsis txaus, vim tsis tiav polymerization, zaj duab xis swells thiab ua mos thaum lub sij hawm txoj kev loj hlob, ua rau cov kab tsis meej los yog txawm zaj duab xis tev, ua rau tsis zoo bonding ntawm cov zaj duab xis thiab tooj liab; Yog hais tias qhov raug overexposed, nws yuav ua rau txoj kev loj hlob teeb meem thiab kuj thaum lub sij hawm electroplating txheej txheem. Warping thiab tev tawm tau tshwm sim thaum lub sij hawm txheej txheem, tsim kev nkag mus plating. Yog li ntawd, nws yog ib qho tseem ceeb heev kom tswj tau lub zog raug.

2. Cov yeeb yaj kiab kub yog siab dhau lossis qis

Yog tias cov yeeb yaj kiab kub qis dhau lawm, cov yeeb yaj kiab tiv thaiv tsis tuaj yeem softened thiab ntws zoo, uas ua rau tsis zoo adhesion ntawm cov zaj duab xis qhuav thiab nto ntawm tooj liab clad laminate; Yog tias qhov kub thiab txias heev, cov kuab tshuaj thiab lwm yam volatility nyob rau hauv lub resist The sai volatilization ntawm cov khoom ua npuas, thiab cov zaj duab xis qhuav yuav nkig, ua rau warping thiab tev tawm thaum lub sij hawm electroplating hluav taws xob poob siab, ua rau infiltration.

3. Lub siab ntawm zaj duab xis yog siab dhau los yog qis

Thaum cov yeeb yaj kiab siab qis dhau lawm, nws yuav ua rau cov yeeb yaj kiab tsis sib xws los yog qhov sib txawv ntawm cov yeeb yaj kiab qhuav thiab cov phaj tooj liab thiab ua tsis tau raws li qhov yuav tsum tau ua ntawm kev sib txuas; Yog tias cov yeeb yaj kiab siab dhau lawm, cov kuab tshuaj thiab cov khoom tsis sib haum ntawm cov txheej txheem tiv thaiv yuav volatilize ntau dhau, ua rau cov zaj duab xis qhuav ua nkig thiab yuav raug tshem tawm thiab tev tawm tom qab electroplating hluav taws xob poob siab.