Abadlali abaningi be-DIY bazothola ukuthi imikhiqizo ehlukahlukene yebhodi emakethe isebenzisa izinhlobonhlobo ezididayo zemibala ye-PCB.
Imibala evame kakhulu ye-PCB emnyama, eluhlaza, eluhlaza okwesibhakabhaka, ephuzi, ensomi, ebomvu, nensundu.
Abanye abakhiqizi baye bahlakulela imibala emhlophe, epinki neminye ehlukene ye-PCB.

Ngombono wendabuko, i-PCB emnyama ibonakala ibekwe endaweni ephezulu, kuyilapho ebomvu, ephuzi, njll., ingabe i-low-end inikezelwe, akunjalo?

Ungqimba lwethusi lwe-PCB ngaphandle kwe-solder ukumelana ne-oxidizes kalula uma ivezwe emoyeni

Siyazi ukuthi kokubili ngaphambili nangemuva kwe-PCB kuyizendlalelo zethusi.Ekukhiqizeni i-PCB, ungqimba lwethusi luzoba nendawo ebushelelezi futhi engavikelekile kungakhathaliseki ukuthi lukhiqizwa ngendlela yokuhlanganisa noma yokukhipha.

Nakuba izakhiwo zamakhemikhali zethusi zingasebenzi njenge-aluminium, insimbi, i-magnesium, kodwa phambi kwamanzi, ithusi elihlanzekile kanye nokuxhumana kwe-oxygen kulula uku-oxidized;
Ngenxa yobukhona bomoya-mpilo kanye nomhwamuko wamanzi emoyeni, ingaphezulu lethusi elihlanzekile lizobhekana nokusabela kwe-oxidation ngokushesha ngemva kokuxhumana nomoya.

Njengoba ubukhulu bongqimba lwethusi ku-PCB buncane kakhulu, ithusi eline-oxidized lizoba umqhubi ompofu kagesi, okuzolimaza kakhulu ukusebenza kukagesi kwe-PCB yonke.

Ukuze kuvinjwe i-oxidation yethusi, ukuhlukanisa izingxenye ezishiselwe nezingezona ezishiselwe ze-PCB ngesikhathi sokushisela, nokuvikela ubuso be-PCB, onjiniyela bakha i-coating ekhethekile.
I-coating ingasetshenziswa kalula ebusweni be-PCB, yakha ungqimba oluvikelayo logqinsi oluthile futhi luvimbe ithusi ekuxhumaneni komoya.
Lolu ngqimba lwe-coating lubizwa ngokuthi ungqimba lokumelana ne-solder futhi izinto ezisetshenziswayo upende wokumelana ne-solder.

Njengoba kubizwa ngopende, kufanele kube nemibala ehlukene.
Yebo, upende wangempela wokumelana ne-solder ungase ungabi mbala futhi ubonakale, kodwa i-PCB ivame ukudinga ukuphrinta ebhodini ukuze kube lula ukuyilungisa nokukhiqiza.

Upende okhanyelayo wokumelana ne-solder ungabonisa kuphela umbala wangemuva we-PCB, ngakho-ke noma ukhiqizwa, uyakhandwa noma uyathengiswa, ukubukeka akukuhle.
Ngakho-ke onjiniyela bengeza imibala eyahlukene kupende wokumelana ne-solder ukuze bakhe ama-PCB amnyama noma abomvu noma aluhlaza okwesibhakabhaka.

 
2
Ama-PCB amnyama kunzima ukubona izintambo, okwenza ukugcinwa kube nzima

Ngokwaleli phuzu lokubuka, umbala we-PCB awuhlangene nekhwalithi ye-PCB.
Umehluko phakathi kwe-PCB emnyama ne-PCB eluhlaza okwesibhakabhaka, i-PCB ephuzi kanye nomunye umbala we-PCB usembala ohlukile wopende wokumelana ne-solder ebhulashini.

Uma i-PCB yakhelwe futhi yakhiwe ngokufana ncamashi, umbala ngeke ube nomthelela ekusebenzeni, futhi ngeke ube nomthelela ekulahlekeni kokushisa.

Ngokuqondene ne-PCB emnyama, izintambo zayo ezingaphezulu zicishe zimbozwe ngokuphelele, okuholela ebunzimeni obukhulu bokulungiswa kwakamuva, ngakho-ke kungumbala ongafanele ukwenziwa nokusetshenziswa.

Ngakho-ke, eminyakeni yamuva nje, abantu bayashintsha kancane kancane, bayeke ukusetshenziswa kopende omnyama wokumelana ne-solder, futhi basebenzise upende oluhlaza obumnyama, obumnyama, oluhlaza okwesibhakabhaka nolunye uhlobo lokumelana ne-solder, inhloso ukwenza lula ukukhiqizwa nokugcinwa.

Kuleli qophelo, sesicacile ngenkinga yombala we-PCB.
Isizathu sokuvela "kommeleli wombala noma ibanga eliphansi" kungenxa yokuthi abakhiqizi bathanda ukusebenzisa i-PCB emnyama ukwenza imikhiqizo ephezulu, kanye nemikhiqizo ebomvu, eluhlaza okwesibhakabhaka, eluhlaza, ephuzi kanye neminye yezinga eliphansi.

Ukufingqa, umkhiqizo unikeza incazelo kumbala, hhayi umbala onikeza incazelo kumkhiqizo.

Iyiphi inzuzo insimbi eyigugu njengegolide, isiliva enayo ngePCB?
Umbala ucacile, ake sikhulume ngensimbi eyigugu ku-PCB!
Abanye abakhiqizi ekukhuthazeni imikhiqizo yabo, bazosho ngokuqondile ukuthi imikhiqizo yabo yasebenzisa igolide, i-silver plating nezinye izinqubo ezikhethekile.
Ngakho yini ukusetshenziswa kwale nqubo?

Ingaphezulu le-PCB lidinga izakhi zokushisela, futhi ingxenye yongqimba lwethusi iyadingeka ukuze ivezwe ukuze kushiselwe.
Lezi zingqimba zethusi eziveziwe zibizwa ngokuthi ama-pads, futhi amaphedi ngokuvamile angunxande noma ayindilinga futhi anendawo encane.

Ngenhla, siyazi ukuthi ithusi elisetshenziswa ku-PCB lifakwa i-oxidized kalula, ngakho-ke ithusi ku-solder pad livezwa emoyeni lapho kusetshenziswa upende wokumelana ne-solder.

Uma ithusi ku-pad i-oxidized, akunzima nje ukushisela, kodwa futhi kwandisa ukumelana, okuthinta kakhulu ukusebenza komkhiqizo wokugcina.
Ngakho onjiniyela sebeqhamuke nazo zonke izinhlobo zezindlela zokuvikela ama-pads.
Njengokwemboza igolide lensimbi ye-inert, ukumboza ubuso ngesiliva ngamakhemikhali, noma ukumboza ithusi ngefilimu ekhethekile yamakhemikhali ukuvimbela ukuthintana nomoya.

Iphedi eveziwe ku-PCB, isendlalelo sethusi sivezwa ngokuqondile.
Le ngxenye idinga ukuvikelwa ukuze ivinjwe ukuthi ifakwe i-oxidized.

Kusukela kulo mbono, kungakhathaliseki ukuthi igolide noma isiliva, inhloso yenqubo ngokwayo ukuvimbela i-oxidation nokuvikela ama-pads ukuze bakwazi ukuqinisekisa isivuno esihle ngesikhathi senqubo ye-welding elandelayo.

Nokho, ukusetshenziswa kwezinsimbi ezahlukene kuzodinga isikhathi sokugcina nezimo zokugcina ze-PCB ezisetshenziswa embonini yokukhiqiza.
Ngakho-ke, amafekthri e-PCB ngokuvamile asebenzisa umshini wokuvala i-vacuum ukupakisha i-PCB ngaphambi kokuqedwa kokukhiqizwa kwe-PCB nokulethwa kumakhasimende ukuze kuqinisekiswe ukuthi akukho monakalo we-oxidation okwenzeka ku-PCB kuze kube umkhawulo.

Ngaphambi kokuba izingxenye zishiselwe emshinini, abakhiqizi bekhadi lebhodi nabo badinga ukubona izinga le-oxidation ye-PCB, basuse i-PCB ene-oxidized, futhi baqinisekise isivuno semikhiqizo emihle.
Umthengi wokugcina wokuthola ikhadi lebhodi, kungenxa yokuhlolwa okuhlukahlukene, ngisho nangemva kwesikhathi eside sokusetshenziswa, i-oxidation cishe izokwenzeka kuphela ezingxenyeni zokuxhuma ipulaki kanye nokukhipha, nasemaphepheni futhi kuye kwafakwa izingxenye ezishiselwe, akukho mphumela.

Njengoba ukumelana kwesiliva negolide kuphansi, ingabe ukusetshenziswa kwezinsimbi ezikhethekile njengesiliva negolide kuzonciphisa ukushisa okukhiqizwa phakathi nokusetshenziswa kwe-PCB?

Siyazi ukuthi isici esithinta inani le-calorific ukumelana nogesi.
Ukumelana kanye ne-conductor ngokwayo impahla, indawo ye-conductor cross-sectional, ubude obuhlobene.
Ugqinsi lwensimbi ye-pad lungaphansi kakhulu kuka-0.01 mm, uma ukusetshenziswa kwe-OST (ifilimu yokuvikela ephilayo) ukwelashwa kwephedi, ngeke kube khona ukujiya okweqile.
Ukumelana okuboniswa ubukhulu obuncane obunjalo cishe ku-zero, noma akunakwenzeka ukubala, futhi ngokuqinisekile akuthinti ukushisa.