Ulwazi oluyisisekelo lwesoft PCB ibhodi

Ngokukhula okuqhubekayo kwesilinganiso sokukhiqizwa kwe-PCB ethambile nokusetshenziswa nokuphakanyiswa kwe-PCB eguquguqukayo eguqukayo, kuvame kakhulu ukwengeza i-PCB ethambile, eqinile noma eqinile lapho uthi i-PCB, futhi usho ukuthi zingaki izingqimba. Imvamisa, i-PCB eyenziwe ngezinto ezithambile zokuvikela ubizwa ngokuthi i-PCB ethambile noma i-PCB eguquguqukayo, i-PCB eguquguqukayo eguquguqukayo. IJAMelana nemikhiqizo yamanje ye-elekthronikhi ekuthembekeni okuphezulu nasekuthembekeni okuphezulu, i-miniaturization, izidingo zokuthuthukiswa kokuqondisa okulula, kepha futhi ihlangabezana nezidingo zomnotho eziqinile kanye nezidingo zemincintiswano yemakethe nezobuchwepheshe.

Phesheya, i-PCB ethambile ibisetshenziswa kabanzi ekuqaleni kwawo-1960. Ezweni lethu, ukukhiqizwa nokusetshenziswa kwaqala ngawo-1960. Eminyakeni yamuva nje, ngokuhlanganiswa komnotho womhlaba wonke kanye nedolobha elivulekile, nokwethulwa kobuchwepheshe ukukhuthaza ukusetshenziswa kwaso kukhula njalo, ifektri ethile ye-PCB encane naphakathi nendawo eqinile ehlose ubuchwepheshe obulula bokusebenza kuleli thuba, ithuluzi kanye nenqubo yokwenza ukusetshenziswa kokuthuthukiswa kwemishini ekhona, ukuguqulwa kanye nokusetshenziswa okukhiqizayo okuthambile kwe-PCB ukusetshenziswa kwezidingo ezikhulayo. Ukuze uqhubeke nokuqonda i-PCB, inqubo ye-PCB ethambile yethulwa lapha.

I. Ukwahlukaniswa kwe-PCB ethambile kanye nobuhle nobubi bayo

1. Ukuhlukaniswa kwe-PCB ethambile

Ama-PCBS athambile ajwayele ukuhlukaniswa ngokwesendlalelo nokwakheka komqhubi kanjena:

1.1 I-PCB emaceleni eyodwa

I-PCBS ethambile emaceleni ayodwa, enoqwembe olulodwa kuphela lomqhubi, ingaba noma ingabi nayo ingubo ebusweni. Okusetshenziswayo kwesisekelo sokusetshenziswa kuyahluka ngokusetshenziswa komkhiqizo. Izinto zokuvikela imvamisa ezisetshenziswa kakhulu zine-polyester, i-polyimide, i-polytetrafluoroethylene, indwangu ethambile yengilazi ye-epoxy.

I-PCB ethambile yamacala amane ingahlukaniswa ngezigaba ezine ezilandelayo:

1) Ukuxhumeka kohlangothi olulodwa ngaphandle kokumboza ungqimba

Iphethini yocingo yalolu hlobo lwe-PCB ethambile iku-substrate evikela, futhi ingaphezulu lwentambo alimboziwe. Njenge-PCB ejwayelekile ehlangothini olulodwa eqinile. Le mikhiqizo ishibhile futhi ijwayele ukusetshenziswa ezinhlelweni ezingabaluleki, ezingayilimazi imvelo. Ukuxhuma kutholakala nge-tin welding, i-fusion welding noma i-pressure welding. Kwakuvame ukusetshenziselwa izingcingo zokuqala.

2) uxhumano olulodwa emaceleni nesembozo sendwangu

Uma kuqhathaniswa nesigaba esedlule, lolu hlobo lomqhubi lunolwelwesi olulodwa lokumboza ngaphezulu ngokuya ngezidingo zamakhasimende. Lapho umboza, iphedi kufanele ivezwe obala, ingavalwa nje ekugcineni. Izidingo ngokunemba ingasetshenziswa ngesimo izimbobo imvume. Ingenye ye-PCB ethambile esetshenziswa kakhulu emaceleni, esetshenziswa kakhulu entweni yezimoto nasensimbini kagesi.

3) Akukho ukuxhumana okunamacala amabili kwesendlalelo sokumboza

Lolu hlobo lwesixhumi esibonakalayo sepuleti lokuxhuma lingaxhunywa ngaphambili nangasemuva kocingo. Ukuze wenze lokhu, kwenziwa umgodi wendlela ku-substrate yokuvikela ephedi. Lo mgodi wendlela ungenziwa ngokushaya ngezibhakela, ukugcoba noma ezinye izindlela zomshini endaweni oyifunayo ye-substrate yokuvikela. Isetshenziselwa zombili izinhlangothi ezifaka izinto, amadivayisi nezinhlelo zokusebenza ezidinga i-tin welding. Indawo yokungena ayinayo i-substrate evikela futhi indawo enjalo yephedi ivame ukususwa ngamakhemikhali.

4) Ukuxhumana okunamacala amabili ngezendwangu zokumboza

Umehluko phakathi kwalesi sigaba nesigaba esedlule ukuthi kukhona ungqimba lokumboza ngaphezulu. Kepha ukufakwa kunemigodi yokufinyelela evumela ukuthi inqanyulwe ezinhlangothini zombili ngenkathi igcina ukugqokwa. La ma-PCBS athambile enziwe ngezendlalelo ezimbili zempahla evikela kanye nomqhubi wensimbi. Isetshenziswa lapho kungqimba lokumboza kudingeka ukuthi kufakwe insimbi kusuka kudivayisi ezungezile, futhi kukhishwe komunye nomunye, zombili izingxenye zangaphambili nezingemuva zixhumekile.

1.2 I-PCB ethambile emaceleni

Emaceleni PCB nezimo nge izingqimba ezimbili abaqhubi. Izicelo nezinzuzo zalolu hlobo lwe-PCB enamacala amabili ifana naleyo ye-PCB enamacala amane eguquguqukayo, ngenzuzo enkulu ukukhushulwa kwezintambo endaweni ngayinye. Ingahlukaniswa: umgodi ongenawo insimbi futhi ngaphandle kokumboza ungqimba ngokuya ngobukhona nokungabikho komgodi osansimbi; B ngaphandle kwezimbobo zensimbi futhi embozwe; C enezimbobo zensimbi futhi ingekho isendlalelo sokumboza; D enezimbobo zensimbi nezendlalelo zokumboza. Ama-PCBS athambile anezinhlangothi ezimbili ngaphandle kokumbondelana awavamile ukusetshenziswa.