Izinto eziyisisekelo zebhodi lesifunda lefektri ye-electro-acoustic PCB ine-foil yethusi kuphela ezinhlangothini zombili, futhi phakathi nendawo iyingqimba evikelayo, ngakho-ke akudingeki ukuba ibe yi-conductive phakathi kwezinhlangothi ezimbili noma izifunda ezinezingqimba eziningi webhodi lesifunda?Imigqa ezinhlangothini zombili ingaxhunywa kanjani ndawonye ukuze i-current ihambe kahle? Ngezansi, sicela ubone i-electroacoustic Umkhiqizi we-PCB ukukuhlaziyela le nqubo yemilingo - ukucwila kwethusi (PTH). I-Immersion copper isifinyezo se-Eletcroless Plating Copper, eyaziwa nangokuthi i-Plated Through Hole, efushanisiwe njenge-PTH, okuwukusabela kwe-autocatalytic redox.Ngemuva kokuthi ibhodi elinezingqimba ezimbili noma izingqimba eziningi libhodwe, inqubo ye-PTH iyenziwa. Indima ye-PTH: Engxenyeni engaphansi yodonga lwembobo ebhoboziwe, ungqimba oluncane lwekhemikhali yethusi lufakwa ngamakhemikhali ukuze lusebenze njenge-substrate ye-electroplating yethusi elandelayo. Inqubo ye-PTH ukubola: ukuwohloka kwe-alkaline → ukuhlambuluka kwesibili noma okuphezulu okuphikisayo → ukuhwalala (ukuhushulwa okuncane) → ukuhlambuluka kwesibili okuphindiwe → ukucwiliswa kuqala → ukwenza kusebenze → ukuhlambuluka kwesibili okuphikisayo → ukuhlanjululwa → ukuhlambuluka kwesibili okuphikisayo → ukucwiliswa kwethusi kwesiteji sesibili → ukukha isibali sesibili
Incazelo yenqubo enemininingwane ye-PTH: 1. Ukususwa kwe-alkaline: susa amabala kawoyela, izigxivizo zeminwe, ama-oxide, nothuli ezimbotsheni;lungisa udonga lwama-pore ukusuka ekushajeni okunegethivu kuya ekushajeni okuhle, okulungele ukukhangiswa kwe-colloidal palladium kwinqubo elandelayo;ukuhlanza ngemva kokwehlisa amafutha kumele kulandele ngokuqinile izinkombandlela Yenza ukuhlolwa ngokucwiliswa kokukhanya kwe-backlight yethusi. 2. I-Micro-etching: khipha ama-oxide ebusweni bebhodi, wenze ibhodi ibe roughen, futhi uqinisekise amandla okubopha okuhle phakathi kongqimba olulandelayo lokucwiliswa kwethusi kanye nethusi eliphansi le-substrate;indawo entsha yethusi inomsebenzi oqinile futhi ingakhanga kahle ama-colloids palladium; 3. Ukucwiliswa kwangaphambili: Ikakhulukazi ukuvikela ithangi le-palladium ekungcolisweni koketshezi lwethangi lokuhlanza futhi andise impilo yesevisi yethangi le-palladium.Izingxenye eziyinhloko ziyafana nalezo zethangi le-palladium ngaphandle kwe-palladium chloride, engamanzisa ngempumelelo udonga lwembobo futhi yenze kube lula ukusebenza okulandelayo koketshezi.Faka imbobo ngesikhathi ukuze kusebenze okwanele nangempumelelo; 4. Ukuqalisa: Ngemva kokulungiswa kwe-polarity kokukhishwa kwe-alkaline degreasing pretreatment, izindonga zembotshana ezifakwe kahle zingakwazi ukumunca kahle izinhlayiya ze-colloidal palladium ezishajwa kabi ukuze kuqinisekiswe ukufana, ukuqhubeka nokubumbana kwemvula yethusi elandelayo;Ngakho-ke, ukwehlisa amafutha kanye nokwenza kusebenze kubaluleke kakhulu kwikhwalithi yokubeka ithusi okulandelayo.Amaphuzu okulawula: isikhathi esinqunyiwe;i-stannous ion ejwayelekile kanye nokuhlushwa kwe-chloride ion;amandla adonsela phansi athile, i-acidity kanye nezinga lokushisa nakho kubaluleke kakhulu, futhi kufanele kulawulwe ngokuqinile ngokwemiyalelo yokusebenza. 5. I-Degumming: susa ama-ion e-stannous ambozwe ngaphandle kwezinhlayiya ze-colloidal palladium ukuze uveze umgogodla we-palladium ezinhlayiyeni ze-colloidal ukuze udale ngokuqondile nangempumelelo ukusabela kwemvula yethusi yamakhemikhali.Okuhlangenwe nakho kukhombisa ukuthi kungcono ukusebenzisa i-fluoroboric acid njenge-ejenti yokukhipha isisu.s Ukukhetha. 6. Imvula yethusi: I-electroless copper precipitation autocatalytic reaction ibangelwa ukwenziwa kusebenze kwenucleus ye-palladium.Ikhopha yekhemikhali esanda kwakhiwa kanye ne-hydrogen esabelayo ngomkhiqizo ingasetshenziswa njengezisusa zokusabela ukuze kubangele ukusabela, ukuze ukusabela kwemvula yethusi kuqhubeke ngokuqhubekayo.Ngemva kokucubungula ngalesi sinyathelo, ungqimba lwethusi lwamakhemikhali lungafakwa endaweni yebhodi noma odongeni lwembobo.Ngesikhathi senqubo, uketshezi lokugeza kufanele lugcinwe ngaphansi kokuyaluza komoya okuvamile ukuze kuguqulwe ithusi elincibilikayo elibivalent.
Ikhwalithi yenqubo yokucwiliswa kwethusi ihlobene ngokuqondile nekhwalithi yebhodi lesifunda sokukhiqiza.Iwumthombo oyinhloko wenqubo yama-vias ampofu, amasekhethi avulekile namafushane, futhi ayilungele ukuhlolwa okubonakalayo.Inqubo elandelayo ingahlolwa kuphela ngokuhlolwa okulimazayo.Ukuhlaziya nokuqapha okusebenzayo a ibhodi elilodwa le-PCB , ngakho-ke uma inkinga seyenzekile, kufanele kube yinkinga yeqoqo, noma ngabe ukuhlolwa kungaqedwa, umkhiqizo wokugcina uzodala izingozi ezinkulu ezifihliwe kukhwalithi, futhi ungalahlwa ngamaqoqo kuphela, ngakho-ke kufanele usebenze ngokuqinile ngokuya amapharamitha wemiyalo yokusebenza. 
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