Multilayer Circuit Board Giovanni tom tooj liab
Qhov teeb meem no yuav tsum tau taug qab mus rau cov txheej txheem tooj liab electroplating. Nws tau pom tias nyob rau hauv cov ntaub ntawv ntawm qhov sib sib zog nqus qhov tooj liab plating thiab qhov muag tsis pom qhov tooj liab plating nrog siab nam piv, yog hais tias peb muaj peev xwm muab ib tug ntau uniform faib ntawm tooj liab thickness, nws yuav txo tau qhov zoo ntawm Giovanni tom. tooj liab phenomenon. Tsis tas li ntawd, lub stripping ntawm hlau resists (xws li ntshiab tin txheej) thiab etching ntawm tooj liab nyob rau hauv ntau txheej txheej Circuit Court board txheej txheem, ib zaug etching ntau dhau lawm thiab muaj sab etching, nplua seams kuj yuav raug generated thiab cov plating tov thiab micro-etching tov tej zaum yuav muab zais.
Qhov tseeb, qhov loj ntawm Giavani cov teeb meem yog qhov project xim ntsuab, nyob rau hauv uas sab erosion thiab zaj duab xis embossing tshwm sim los ntawm cov xim ntsuab phenomenon yog ib qho yooj yim ua rau zoo seams. Ntev npaum li qhov tshwm sim ntawm cov xim ntsuab tuaj yeem pom qhov zoo ntawm qhov seem ntawm ko taw es tsis yog qhov tsis zoo ntawm kev yaig, thiab tom qab cov xim ntsuab yog tag nrho hardened, qhov tsis muaj xws li Giovanni's tom tooj liab yuav raug tshem tawm. Raws li kev ua haujlwm ntawm electroplating tooj liab, nws yog ib qho tsim nyog yuav tsum ua kom tooj liab electroplating nyob rau hauv qhov sib sib zog nqus qhov sib sib zog nqus ntau dua thaum muaj zog nplawm. Nyob rau lub sijhawm no, nws yog ib qho tsim nyog yuav tsum siv ultrasonic thiab Eductor los pab do kom txhim kho qhov hloov pauv loj thiab tooj liab thickness ntawm da dej. Kev faib tawm. Raws li rau cov txheej txheem ntawm PCB immersion silver plating, micro-etching tooj liab tom tus nqi nyob rau hauv pem hauv ntej seem yuav tsum tau nruj me ntsis tswj, thiab tus du tooj liab nto kuj yuav txo tau lub hav zoov ntawm zoo seams tom qab xim ntsuab. Tom qab ntawd, lub tank nyiaj nws tus kheej yuav tsum tsis txhob muaj zog tooj liab tom cov tshuaj tiv thaiv. Tus nqi pH yuav tsum yog nruab nrab, thiab tus nqi plating yuav tsum tsis txhob nrawm dhau. Hmoov zoo, lub thickness yuav tsum tau txiav raws li nyias li sai tau, thiab nyob rau hauv lub optimized silver siv lead ua Nyob rau hauv thiaj li yuav ua tau ib tug zoo txoj hauj lwm ntawm anti-discoloration muaj nuj nqi.
Ob-sided bonding Circuit Board proofing ntau lawm
2. Kev txhim kho ntawm discoloration ntawm ntau txheej Circuit Court boards
Txoj kev txhim kho yog ua kom qhov ntom ntawm cov txheej thiab txo nws qhov porosity. Cov khoom ntim yuav tsum yog ua los ntawm cov ntawv tsis muaj leej faj thiab muab kaw kom cais tawm cov pa oxygen thiab sulfur nyob rau hauv cov huab cua, yog li txo qhov chaw ntawm cov xim. Tsis tas li ntawd, qhov kub ntawm qhov chaw cia yuav tsum tsis pub tshaj 30 degree, thiab cov av noo yuav tsum qis dua 40 feem pua RH. Nws yog qhov zoo dua los siv txoj cai ntawm kev siv thawj zaug kom tsis txhob muaj teeb meem tshwm sim los ntawm kev khaws cia ntev heev.
3. Kev txhim kho ntawm cov pa phem ion rau ntawm PCB nto ntawm multilayer circuit boards
Yog hais tias lub ion concentration ntawm immersion nyiaj plating da dej yuav raug txo kom tsis txhob cuam tshuam qhov zoo ntawm txheej, cov ions nqa tawm thiab txuas mus rau saum npoo ntawm lub phaj yuav raug txo. Hauv kev ntxuav tom qab immersion plating, nws yuav tsum tau muab yaug nrog dej ntshiab rau ntau tshaj 1 feeb ua ntej ziab kom txo cov adhesion ntawm ions. Ntxiv mus, kev huv huv ntawm lub rooj tsavxwm tiav yuav tsum tau kuaj xyuas tsis tu ncua, kom cov ions seem nyob rau saum npoo ntawm PCB yuav tsum raug txo kom qis kom ua tau raws li kev lag luam tus qauv. Txhua qhov kev xeem uas tau ua tiav yuav tsum tau khaws cia rau hauv lawv cov ntaub ntawv thaum muaj xwm txheej ceev.
4. Kev txhim kho ntawm tooj liab raug rau ntawm cov nyiaj saum npoo ntawm multilayer circuit board
Ntau yam txheej txheem ua ntej immersion nyiaj plating yuav tsum tau ua tib zoo tswj, xws li kev tshawb nrhiav ntawm "dej so" (WaterBreak hais txog dej repellency) thiab kev soj ntsuam ntawm qhov tshwj xeeb ci tooj liab me ntsis tom qab micro-etching tooj liab nto, tag nrho cov uas qhia tias muaj. tej zaum yuav muaj qee qhov tsis xws luag ntawm qhov tooj liab. lub cev txawv teb chaws. Cov tooj liab huv si nrog micro-etching zoo yuav tsum tau khaws cia rau 40 vib nas this yam tsis muaj dej tawg. Cov cuab yeej sib txuas yuav tsum tau ua kom tsis tu ncua kom tswj tau qhov sib xws ntawm nws cov dej zoo, kom cov txheej txheem nyiaj plating ntau dua tuaj yeem tau txais. Thaum lub sijhawm ua haujlwm, nws yog ib qho tsim nyog yuav tsum ua raws li DOE qhov kev sim kev sim kev sim ntawm lub sijhawm tooj liab immersion, ua kua kub, nplawm, thiab aperture loj, thiab lwm yam, thiaj li yuav tau txais qhov zoo tshaj plaws zoo nyiaj plating txheej, thiab rau cov phaj tuab nrog tob. qhov thiab HDI micro-dig muag qhov daim hlau. Cov txheej txheem immersion nyiaj plating kuj tuaj yeem pab tau los ntawm kev quab yuam sab nraud ntawm ultrasonic thiab muaj zog tam sim no los txhim kho kev faib ntawm cov nyiaj txheej. Kev ntxhov siab ntxiv ntawm cov da dej no tuaj yeem txhim kho qhov ntub dej thiab sib pauv dej hauv qhov tob thiab qhov muag tsis pom kev, uas yog kev pab zoo rau tag nrho cov txheej txheem ntub dej.
5. Kev txhim kho ntawm micro-qhov nyob rau hauv solder pob qij txha ntawm multilayer circuit boards
Interface micro-qhov tseem yog qhov tsis txaus uas yog qhov nyuaj rau kev txhim kho tam sim no immersion nyiaj plating, vim tias qhov laj thawj tiag tiag tseem tsis tau tshwm sim, tab sis tsawg kawg qee qhov laj thawj cuam tshuam tau raug txheeb xyuas. Yog li ntawd, thaum txo qhov tshwm sim ntawm nws cov yam tseem ceeb, ntawm chav kawm, qhov tshwm sim ntawm downstream welding micro-qhov kuj yuav txo tau.
Ntawm cov yam tseem ceeb, lub thickness ntawm cov nyiaj txheej yog qhov tseem ceeb, thiab lub thickness ntawm cov nyiaj yuav tsum tau txo kom ntau li ntau tau. Qhov thib ob, micro-etching ntawm pretreatment yuav tsum tsis txhob ua rau tooj liab nto ntxhib heev, thiab cov uniformity ntawm cov nyiaj thickness faib kuj yog lub ntsiab lus tseem ceeb. Raws li rau cov organic cov ntsiab lus nyob rau hauv cov nyiaj txheej, nws yuav raug thim rov qab los ntawm kev tsom xam ntawm purity ntawm ntau cov ntsiab lus sampling nyiaj txheej, thiab cov ntsiab lus ntawm cov nyiaj ntshiab yuav tsum tsis txhob qis dua 90 feem pua ntawm atomic ratio.