I roto i te tukanga hanga o nga papa PCB, he maha nga ahuatanga ohorere ka puta, penei i te parahi hiko, te whakakikorua parahi matū, te whakakikorua koura, te whakakikorua tine me etahi atu whakakikorua paparanga whakakikorua. Na he aha te take mo tenei whakawhanaungatanga?
I raro i te whakamaaramatanga o te rama ultraviolet, ko te photoinitiator e kuhu ana i te kaha marama ka tihorea ki roto i te roopu kore utu e whakaohooho ana i te tauhohenga photopolymerization me te hanga i te ngota ngota tinana e kore e rewa i roto i te wairewa alkali waimeha. I raro i te whakaaturanga, na te kore o te polymerization, i te wa o te whakawhanaketanga, ka pupuhi te kiriata me te ngawari, ka puta mai nga raina kore marama, tae noa ki te kiriata ka taka atu, ka hua te hononga kino i waenga i te kiriata me te parahi; Mena he nui rawa te whakamaaramatanga, ka raru te whakawhanaketanga, ka puta mai ano he whakakikorua me te tihorea i te wa o te whakakikoruatanga, ka hangai te whakakikoruatanga. No reira he mea nui ki te whakahaere i te kaha whakakitenga; I muri i te maimoatanga o te mata o te parahi, ko te wa horoi kaore i te ngawari ki te roa rawa, no te mea kei roto hoki i te wai horoi etahi matū waikawa, ahakoa he ngoikore tona ihirangi, engari kaore e taea e te paanga ki te mata o te parahi. kia ngawari, me whakahaere te mahi horoi kia rite ki nga whakaritenga o te tukanga.
Ko te take nui ka taka te paparanga koura mai i te mata o te paparanga nickel ko te maimoatanga mata o te nickel. Ko te ngoikore o te mahi mata o te whakarewa nickel he uaua ki te whiwhi hua pai. Ko te mata o te paninga nickel he ngawari ki te whakaputa i te kiriata passivation i roto i te rangi, penei i te maimoatanga kino, ka wehe i te paparanga koura mai i te mata o te paparanga nickel. Mena kaore i te tika te whakahohe i roto i te hikohiko, ka tangohia te paparanga koura mai i te mata o te paparanga nickel ka tihorea. Ko te take tuarua i muri i te whakahohenga, he roa rawa te wa horoi, ka hanga ano te kiriata passivation ki runga i te mata nickel, katahi ka whakakikoruatia, ka kore e kore ka puta he hapa o te paninga.
He maha nga take mo te whakakikorua delamination, ki te hiahia koe ki te hanga i te ahua rite i roto i te tukanga o te hanga pereti e kore e puta, he hononga nui ki te tiaki me te kawenga o te kaitoi. Na reira, ka whakahaerehia e tetahi kaihanga PCB pai nga whakangungu paerewa mo ia kaimahi awheawhe kia kore ai e tukuna nga hua iti.
Wā tuku: Apr-07-2024
