Izizathu ezijwayelekile ze PCB ukwenqatshwa kwethusi

Njengomthengisi wezinto ezingavuthiwe we-PCB, ngangivame ukukhononda ngamakhasimende ngokuchitheka kwentambo embi (okwaziwa nangokuthi ukulahla ithusi). Kulokhu, wonke amafektri e-PCB kuthiwa ayinkinga ye-laminate, edinga ukuthi izimboni zawo zokukhiqiza zilahlekelwe kakhulu. Ngokusho kweminyaka yami yokuphathwa kwezikhalazo kwamakhasimende, izizathu ezivamile zokulahlwa kwethusi lefektri ye-PCB yilezi ezilandelayo:

Izinqubo zenqubo yokukhiqiza ye-PCB:

1, ithusi lokucwecwa ithusi ngokweqile, ucwecwe lwe-electrolytic yethusi elisetshenziswe emakethe ngokuvamile luye lwahlanganiswa ngasemaceleni (eyaziwa ngokuthi i-ashing foil) ne-plating eyodwa emaceleni ethusi (eyaziwa ngokuthi i-foil red), ukulahlwa kwe-copper okuvamile ngokuvamile kungaphezu I-70um foil yethusi yensimbi, i-foil ebomvu ne-18um engezansi kwe-ashing foil ngokuyisisekelo ayinakho ukulahlwa kwe-batch copper. Lapho ukwakhiwa komugqa wamakhasimende kungcono kunomugqa wokutshalwa, uma imininingwane yocingo yethusi ishintshiwe futhi nemingcele ye-etching ingashintshiwe, ucwecwe lwethusi luhlala kusixazululo sokufaka isikhathi eside kakhulu. Ngoba i-zinc iyinsimbi esebenzayo, lapho ucingo lwethusi ku-PCB lucwiliswa kusixazululo sokudonsa isikhathi eside, nakanjani luzoholela ekugugulekeni komugqa okweqile, okuholele ekutheni ungqimba oluthile olusekela ungqimba lwe-zinc lususwe ngokuphelele futhi luhlukaniswe nezinto eziyisisekelo , okungukuthi, intambo yethusi iyawa. Esinye isimo ukuthi akunankinga ngemingcele ye-ETCHING ye-PCB, kepha ukugcotshwa kuyagezwa ngemuva kokulungiswa futhi ukomiswa kukubi, okuholela ekutheni ucingo lwethusi nalo luzungezwe uketshezi lokuchithwa olusele ku-SURFACE ye-PCB. Uma ingalashwa isikhathi eside, ucingo lwethusi luzokonakala ngokweqile bese kuthi ithusi liphonswe. Ukusebenza okujwayelekile kwalolu hlobo lwesimo kugxilwe emigqeni emihle, noma isikhathi sezulu esimanzi, yonke i-PCB izovela njengaleyo efanayo, isuse ucingo lwethusi ukubona isikhombimsebenzisi sayo namanzi (okubizwa ngokuthi indawo ejiyile) umbala ushintshile, ngokungafani umbala ojwayelekile we-foil color, ukubona umbala wangempela wethusi, imigqa eqinile yamandla we-foil peel amandla nawo ajwayelekile.

2. Kunqubo ye-PCB, kwenzeka ukushayisana kwendawo, futhi ucingo lwethusi luhlukaniswe nezinto eziyisisekelo ngamandla angaphandle omshini. Lokhu kusebenza okungathandeki kubekwe kahle noma kungakhombisi inkambo, intambo yethusi evulekile izoba nokuhlanekezelwa okusobala, noma ohlangothini olufanayo lwendawo yokuqala / yomthelela. Ukuxebula ucingo lwethusi endaweni embi ukubona ubucwebe bezinwele zethusi, ungabona ukuthi umbala wobuso bezinwele zethusi uvamile, ngeke kube khona ukuguguleka okubi kohlangothi, namandla we-peel wepeel ajwayelekile.

I-3, idizayini yesekethe ye-PCB ayinangqondo, ngedizayini yethusi ewugqinsi yesifunda esincanyana kakhulu, nayo izodala ukugcwala kwesifunda ngokweqile nokulahla ithusi.

Izizathu ezimbili, zenqubo yokuqhafaza:

Ngaphansi kwezimo ezijwayelekile, inqobo nje uma i-laminate icindezelwe ezingeni lokushisa eliphakeme isikhathi esingaphezu kwama-30min, ucwecwe lwethusi kanye neshidi elisesimweni elihlanganisiwe ngokuyisisekelo lihlanganiswe ngokuphelele, ngakho-ke ukucindezela ngokuvamile akuthinti amandla okubopha ocwecwe lwethusi kanye substrate ku-laminate. Kodwa-ke, ngenkathi kubekwa isitaki laminate nokustakwa, uma ukungcola kwe-PP noma ukonakala kobuso bezinwele zethusi kuzophinde kuholele ekuphoqeni okwanele kokubopha phakathi kocwecwe lwethusi nezinto zesisisekelo ngemuva kokugcotshwa, okuholele ekubekeni (kuphela kwamapuleti amakhulu) noma ngocingo lwethusi olunqabile ukuwa, kepha ngeke kube khona amandla we-foil wokuxebula okungajwayelekile eduze kolayini okaliwe.

Izintathu, izinto zokusetshenziswa laminate:

1, okushiwo ngenhla jikelele kwe-electrolytic copper foil MAO foil galvanized or copper plating the producted process, when MAO foil production peak is isnormal, or zinc / copper plating, coating the dendrite, the peel strength of the copper foil itself is not enough, caused ngo-foil omubi ngemuva kokucindezela ishidi elenziwe nge-PCB electronics factory plug-in, intambo yethusi iwe ngokushaqeka kwangaphandle kuzokwenzeka. Lolu hlobo lwethusi elibi eliqaqa ucingo lwethusi ukuze lubone ubuso bezinwele zethusi (okungukuthi, indawo yokuxhumana nezinto ezisezingeni eliphansi) ngeke lube sobala ukuguguleka kohlangothi, kepha yonke indawo yamandla we-foil peeling amandla izoba mpofu kakhulu.

2, ukuvumelana nezimo kocwecwe lwethusi ne-resin akukuhle: okunye ukusebenza okukhethekile kwe-laminate okusetshenzisiwe manje, njengeshidi le-HTg, ngoba uhlelo lwe-resin alufani, i-ejenti ephulukisayo ngokuvamile i-PN resin, isakhiwo se-resin yamangqamuzana silula, i-crosslinking I-degree iphansi lapho yelashwa, nakanjani izosebenzisa ucwecwe olukhethekile lwethusi nomdlalo. Lapho ukukhiqizwa kwe-laminate kusetshenziswa ucwecwe lwethusi futhi uhlelo lwe-resin aluhambisani, okuholela ekutheni ipuleti elimboze ucwecwe lwensimbi amandla okuxebuka alanele, i-plug-in nayo izovela ibhebhu embi yocingo lwethusi.