Izinto ezisisiseko zebhodi yesekethe yomzi-mveliso we-electro-acoustic PCB inefoyile yobhedu kumacala omabini kuphela, kwaye embindini ngumaleko wokugquma, ngoko akufuneki ukuba ibe conductive phakathi kwamacala amabini okanye iisekethe zomaleko amaninzi yebhodi yesekethe?Imigca emacaleni omabini ingadityaniswa njani ukuze umbane uhambe kakuhle? Ngezantsi, nceda ubone i-electroacoustic PCB umenzi ukuhlalutya le nkqubo yomlingo kuwe - ukucwila kobhedu (PTH). Ubhedu lokuntywiliselwa sisishunqulelo se-Eletcroless Plating Copper, ekwabizwa ngokuba yi-Plated through Hole, efinyeziweyo njenge-PTH, eyi-autocatalytic redox reaction.Emva kokuba ibhodi edibeneyo emibini okanye ibhodi eninzi iqhutywe, inkqubo ye-PTH iqhutywe. Indima ye-PTH: Kwi-substrate yodonga lwe-non-conductive eye yagrunjwa, umaleko obhityileyo wobhedu lweekhemikhali ufakwe ngokwekhemikhali ukuze usebenze njenge-substrate ye-electroplating yobhedu elandelayo. I-PTH inkqubo yokubola: ukuthotywa kwealkaline → ukuhlanjululwa kwealkaline okwesibini okanye kwenqanaba lesithathu → ukurhawuzelela (ukurhabula kancinci) → ukucocwa kwesibini okuphinda kuhlanjululwe → ukuvuswa kwangaphambili → ukwenza kusebenze → ukuhlanjululwa kwe-alkaline okwesibini → ukuhlanjululwa kwesibini → ukucocwa kobhedu → ukuchola ubhedu kwenqanaba lesibini
Inkcazo yenkqubo eneenkcukacha ye-PTH: 1. I-alkaline degreasing: susa amabala e-oyile, iminwe, i-oxides, kunye nothuli kwi-pores;lungisa udonga lwama-pore ukusuka kwintlawulo embi ukuya kwintlawulo efanelekileyo, ekulungele ukubhengezwa kwe-colloidal palladium kwinkqubo elandelayo;ukucoca emva kokukhutshwa kwegrisi kufuneka kulandele ngokungqongqo izikhokelo Ukuqhuba uvavanyo kunye novavanyo lwe-backlight copper. 2. I-Micro-etching: susa i-oxides kwindawo yebhodi, ugxininise umphezulu webhodi, kwaye uqinisekise amandla okudibanisa okulungileyo phakathi komgangatho wokucwiliswa kobhedu olulandelayo kunye nobhedu olusezantsi lwe-substrate;umphezulu omtsha wobhedu unomsebenzi onamandla kwaye unokubhengeza icolloids palladium; 3. I-Pre-dip: Ikakhulu kukukhusela itanki ye-palladium ekungcoliseni ulwelo lwetanki yangaphambili kunye nokwandisa ubomi benkonzo yetanki ye-palladium.Amacandelo aphambili ayafana nalawo etanki ye-palladium ngaphandle kwe-palladium chloride, enokuthi imanzise ngokufanelekileyo udonga lomngxuma kwaye iququzelele ukusebenza okulandelayo kolwelo.Faka umngxuma ngexesha ukuze usebenze ngokwaneleyo kunye nokusebenza kakuhle; 4. Ukuqalisa: Emva kohlengahlengiso lwe-polarity ye-alkaline degreasing pretreatment, iindonga ze-pore ezichajiwe kakuhle zinokufunxa ngokufanelekileyo amasuntswana e-colloidal palladium ahlawuliswa kakubi ukuze kuqinisekiswe ukufana, ukuqhubeka kunye nokubumbana kwemvula yobhedu elandelayo;Ke ngoko, ukuthoba kunye nokusebenza kubaluleke kakhulu kumgangatho wokubekwa kobhedu okulandelayo.Amanqaku okulawula: ixesha elichaziweyo;umgangatho we-stannous ion kunye ne-chloride ion concentration;ubunzima obuthile, ubumuncu kunye nobushushu nazo zibaluleke kakhulu, kwaye kufuneka zilawulwe ngokungqongqo ngokwemiyalelo yokusebenza. 5. I-Degumming: susa i-stannous ion ehlanganiswe ngaphandle kweengqungquthela ze-colloidal palladium ukuze uveze i-palladium core kwiinqununu ze-colloidal ngokuthe ngqo kwaye ngokufanelekileyo i-catalyze i-chemical precipitation reaction reaction.Amava abonisa ukuba kungcono ukusebenzisa i-fluoroboric acid njenge-agent ye-degumming.s Ukukhetha. 6. Imvula yobhedu: I-electroless copper precipitation reaction autocatalytic ibangelwa ukusebenza kwe-nucleus ye-palladium.Imichiza yobhedu esandul' ukusekwa kunye ne-reaction by-product ye-hydrogen ingasetyenziswa njenge-reaction catalysts ukwenza i-reaction, ukuze i-reaction yemvula yobhedu iqhubeke ngokuqhubekayo.Emva kokucutshungulwa ngeli nyathelo, umaleko wobhedu lweekhemikhali unokufakwa kwibhodi okanye eludongeni lomngxuma.Ngexesha lenkqubo, ulwelo lokuhlambela kufuneka lugcinwe phantsi kokuphazamiseka komoya okuqhelekileyo ukuguqula ubhedu olunyibilikayo ngakumbi.
Umgangatho wenkqubo yokucwiliswa kobhedu ihambelana ngokuthe ngqo nomgangatho webhodi yesekethe yemveliso.Yeyona nkqubo yomthombo we-vias engalunganga, iisekethe ezivulekileyo nezimfutshane, kwaye ayilungele ukuhlolwa okubonakalayo.Inkqubo elandelayo inokujongwa kuphela ngezilingo ezitshabalalisayo.Uhlalutyo olusebenzayo kunye nokubeka iliso a ibhodi PCB enye , ngoko ke xa ingxaki yenzekile, kufuneka ibe yingxaki yebhetshi, nokuba uvavanyo alukwazi ukugqitywa, imveliso yokugqibela iya kubangela iingozi ezinkulu ezifihliweyo kumgangatho, kwaye inokuchithwa kuphela kwiibhetshi, ngoko kufuneka iqhutywe ngokungqongqo ngokwe iiparamitha zemiyalelo yokusebenza. 
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