I-SMT No-clean Rework Process

Isandulelo.

Inqubo yokulungisa kabusha ihlale inganakwa amafekthri amaningi, nokho amaphutha angempela angenakugwemeka enza kusebenze kabusha kubaluleke kakhulu enqubweni yokuhlanganisa.Ngakho-ke, inqubo yokusebenza kabusha engahlanzekile iyingxenye ebalulekile yenqubo yokuhlanganisa engahlanzekile.Lesi sihloko sichaza ukukhethwa kwezinto ezidingekayo enqubweni yokusebenza kabusha engahlanzekile, ukuhlola nezindlela zenqubo.

I. Ukusebenza kabusha okungahlanzekile nokusetshenziswa kokuhlanza i-CFC phakathi komehluko

Kungakhathaliseki ukuthi hlobo luni lomsebenzi owenziwe kabusha inhloso yawo iyafana -- emhlanganweni wesifunda ophrintiwe mayelana nokususwa okungabhubhisi nokubekwa kwezingxenye, ngaphandle kokuthinta ukusebenza nokuthembeka kwezingxenye.Kodwa inqubo ethize yokungahlanzwa kabusha kusetshenziswa i-CFC yokuhlanza kabusha ihluke ngokuthi umehluko unjalo.

1. ekusetshenzisweni kabusha kwe-CFC yokuhlanza kabusha, izingxenye ezivuselelwe ukuze kudlule inqubo yokuhlanza, inqubo yokuhlanza ngokuvamile ifana nenqubo yokuhlanza esetshenziselwa ukuhlanza isifunda esiphrintiwe ngemva komhlangano.Ukusebenza kabusha kwamahhala okuhlanza akuyona le nqubo yokuhlanza.

2. ekusetshenzisweni kabusha kwe-CFC yokuhlanza kabusha, ukusebenza ukuze kuzuzwe amalunga e-solder amahle kuzo zonke izingxenye ezisetshenziswe kabusha kanye nendawo yebhodi lesifunda ephrintiwe kufanele kusetshenziswe i-solder flux ukususa i-oxide noma okunye ukungcola, kuyilapho kungekho ezinye izinqubo zokuvimbela ukungcola okuvela emithonjeni efana amafutha omunwe noma usawoti, njll. Ngisho noma amanani amaningi e-solder nokunye ukungcola ekhona emhlanganweni wesifunda onyathelisiwe, inqubo yokugcina yokuhlanza izowasusa.Ngakolunye uhlangothi, ukuhlelwa kabusha okungahlanzekile, kubeka yonke into emhlanganweni wesifunda onyathelisiwe, okuholela ezinhlobonhlobo zezinkinga ezifana nokuthembeka kwesikhathi eside kwamalunga e-solder, ukuhambisana nokusebenza kabusha, ukungcoliswa kanye nezimfuneko zekhwalithi yezimonyo.

Njengoba ukuvuselelwa okungahlanzekile kungabonakali ngenqubo yokuhlanza, ukwethembeka kwesikhathi eside kwamalungu e-solder kungaqinisekiswa kuphela ngokukhetha izinto ezifanele zokulungisa kabusha nokusebenzisa inqubo efanele ye-solder.Ekusebenzeni kabusha okungahlanzekile, i-solder flux kufanele ibe yintsha futhi ngesikhathi esifanayo isebenze ngokwanele ukuze isuse ama-oxides futhi izuze ukumanzisa okuhle;okusele emhlanganweni wesifunda onyathelisiwe kumelwe kungathathi hlangothi futhi kungathinti ukwethembeka kwesikhathi eside;ngaphezu kwalokho, izinsalela zomhlangano wesifunda onyathelisiwe kumelwe zivumelane nezinto esetshenzwa kabusha futhi izinsalela ezintsha ezakhiwe ngokuhlangana komunye nomunye kumelwe zingathathi hlangothi.Ngokuvamile ukuvuza phakathi kwama-conductor, i-oxidation, i-electromigration kanye nokukhula kwe-dendrite kubangelwa ukungahambisani nokungcoliswa kwezinto.

Izinga lokubukeka komkhiqizo wanamuhla nalo liyinkinga ebalulekile, njengoba abasebenzisi bejwayele ukukhetha imihlangano yesifunda ephrintiwe ehlanzekile necwebezelayo, futhi ukuba khona kwanoma yiluphi uhlobo lwezinsalela ezibonakalayo ebhodini kuthathwa njengokungcola futhi kwenqatshwa.Kodwa-ke, izinsalela ezibonakalayo ziyingxenye yenqubo yokusebenza kabusha engahlanzekile futhi azamukeleki, nakuba zonke izinsalela zenqubo yokuvuselela zingathathi hlangothi futhi akuthinti ukwethembeka komhlangano wesifunda onyathelisiwe.

Ukuze uxazulule lezi zinkinga kunezindlela ezimbili: eyodwa iwukukhetha okulungile kokusebenza kabusha, ukuvuselelwa kwayo okungahlanzekile ngemuva kwekhwalithi yamalunga e-solder ngemuva kokuhlanza nge-CFC kuhle njengekhwalithi;okwesibili ukuthuthukisa izindlela zamanje zokulungisa kabusha amabhukwana kanye nezinqubo ukuze kuzuzwe ukusoda okuthembekile okungahlanzekile.

II.Sebenza kabusha ukukhethwa kwezinto kanye nokuhambisana

Ngenxa yokuhambisana kwezinto, inqubo yokuhlanganisa okungahlanzekile kanye nenqubo yokuphinda kusetshenzwe kuxhumene futhi kuncike kwelinye.Uma izinto zokwakha zingakhethwanga ngendlela efanele lokhu kuzoholela ekusebenzisaneni okuzonciphisa impilo yomkhiqizo.Ukuhlola ukuhambisana ngokuvamile kuwumsebenzi ocasulayo, obizayo futhi odla isikhathi.Lokhu kungenxa yenani elikhulu lezinto ezihilelekile, izincibilikisi zokuhlola ezibizayo kanye nezindlela zokuhlola eziqhubekayo njalo njalo. Izinto ezisetshenziswayo ngokuvamile ezihilelekile enqubweni yokuhlanganisa zisetshenziswa ezindaweni ezinkulu, okuhlanganisa unamathisele owenziwe nge-solder, i-wave solder, izinto zokunamathisela kanye nama-form-fitting coatings.Inqubo yokwenza kabusha, ngakolunye uhlangothi, idinga izinto ezengeziwe ezifana ne-rework solder kanye ne-solder wire.Zonke lezi zinto zidinga ukuhambisana nanoma yiziphi izihlanzi noma ezinye izinhlobo zokuhlanza ezisetshenziswa ngemuva kokuphrinta kwebhodi lesifunda lokufihla nokunamathisela okungalungile kokuphrinta.

ND2+N8+AOI+IN12C


Isikhathi sokuthumela: Oct-21-2022

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