Iibhodi zesekethe eziprintiweyo (PCBs) ngamagorha angaziwayo obuchwephesha bale mihla, abonelela ngokusebenza kwezixhobo zombane esizisebenzisayo yonke imihla. Ngelixa ukusebenza kwabo kwangaphakathi kungumxholo oshushu, enye into ekhethekileyo ihlala ingahoywa - umbala wabo. Ngaba wakha wazibuza ukuba kutheni iiPCBs ubukhulu becala ziluhlaza ngombala? Kule bhlog, siza kuphonononga kwimbali, zobugcisa, kunye nezinto ezisebenzayo ezikhokelele ekudumeni kweePCB eziluhlaza.
Imvelaphi yezembali:
Ukuqonda ukuba kutheni uhlaza lube ngumbala okhethwayo kwiiPCBs, kufuneka sibuyele emva kwinkulungwane yamashumi amabini. IiPCB zamandulo zenziwe kusetyenziswa i-substrate ebizwa ngokuba yi-Bakelite, into ekhuselayo enombala omdaka. Nangona kunjalo, njengoko itekhnoloji iphucula, ishishini liguqukele kwiinketho ezisebenzayo nezibonakalayo.
Uluhlaza:
Ngeminyaka yee-1960, ishishini le-elektroniki laqala ukusebenzisa i-epoxy resin njenge-substrate material ngenxa yokugquma kombane okugqwesileyo kunye neempawu zoomatshini. Ezi resin nazo zinika inzuzo eyongezelelweyo - ukukwazi ukuba nombala. Umbala oluhlaza ngumbala okhethiweyo ngenxa yokuba ifikeleleka kwaye ifumaneka ngokulula kubavelisi. Nikeza ukugqiba okunomtsalane kwiPCB ngokugquma imikhondo yobhedu nge-inki ye-solder yemaski eluhlaza.
Iingqwalasela ezisebenzayo:
Ukongeza kwizinto zembali, ukuqwalaselwa okusebenzayo kuye kwachaphazela ukuthandwa kweePCB eziluhlaza. Makhe sihlolisise izizathu ezibini ezibalulekileyo:
1. Uchasaniso kunye nokuBubukhali:
Iinjineli ze-Electronics kunye nabaqulunqi bakhetha uhlaza kuba luphikisana nobomvu, umbala wendabuko wee-inks zemaski ezithengiswayo. Ukudibanisa okuchaseneyo obomvu kunye nohlaza kwenza kube lula ukuchonga naziphi na iimpazamo kwinkqubo yokuvelisa kunye nendibano. Ukucaca okwandisiweyo kunciphisa kakhulu ukuba nokwenzeka kweempazamo kunye nokuphucula umgangatho uwonke wemveliso yePCB.
2. Ukudinwa kwamehlo:
Enye ingqiqo emva kokukhethwa kokuluhlaza inento yokwenza nobunjineli bomntu. Ukusebenza ngezixhobo zombane kunye neePCB kufuna iiyure zokujonga kwiisekethe ezintsonkothileyo kunye nezinto ezincinci. Uhlaza lukhethwa ngenxa yokuba ngumbala onciphisa ukunyanzeliswa kwamehlo kunye noxinzelelo, okuvumela amagcisa ukuba asebenze ixesha elide ngaphandle kokuphazamiseka okanye ukulahleka kokuchaneka. Umphumo ococekileyo oluhlaza emehlweni wenza kube yinto efanelekileyo yokusetyenziswa kwexesha elide.
Ezinye iindlela zangoku:
Ngelixa ii-PCB eziluhlaza ziye zalawula ishishini amashumi eminyaka, izinto ezintsha zale mihla ziye zandisa ipalethi yeePCBs. Namhlanje, unokufumana iiPCB ngemibala eyahlukeneyo, ukusuka eluhlaza okwesibhakabhaka nabomvu ukuya kumnyama kunye nokuguquguqukayo. Olu khetho lujongana nezicelo ezithile, iinketho zobuhle, okanye iimfuno ezizodwa zophawu. Nangona kunjalo, nangona uluhlu olubanzi lweenketho ezikhoyo, uhlaza luhlala luhlala lusetyenziswa ngokuqhelekileyo umbala ngenxa yeendleko-ukusebenza, ukuqhelana kunye nokuthembeka.
Ukuthandwa kweePCB eziluhlaza kunokubalelwa kwindibaniselwano yembali, iteknoloji kunye nezinto eziphathekayo. Ukususela kwiingcambu zayo zangaphambili ekufikeleleni kunye nobuninzi be-epoxy eluhlaza, ukucaca kwayo okwandisiweyo kunye nokunciphisa ubunzima bamehlo, umbala uye wafana neshishini le-elektroniki. Ngelixa imarike ngoku ibonelela ngoluhlu olubanzi lweenketho zemibala, kukhuselekile ukuthi iiPCB eziluhlaza ziya kuqhubeka zilawula kwikamva elibonakalayo.
Ixesha lokuposa: Aug-23-2023