Muaj qee zaus: Khij kwv yees li 25% -30% ntawm PCBs tau nce ntxiv (nws yog cov txheej txheem OSP Cov txheej txheem OSP tuaj yeem siv rau ntawm cov thev naus laus zis PCBs lossis Tech-tech PCBs, xws li Tib Leeg TV PCBs thiab High-nta Chip ntim ntim khoom ntim khoom. Rau BGA, tseem muaj ntau ntauTxiv dimpCov ntawv thov. Yog tias PCB tsis muaj kev sib txuas saum npoo av tsis muaj kev sib txuas lossis cov txheej txheem wm yuav yog cov txheej txheem kev kho kom zoo tshaj plaws hauv qab.

Qhov txiaj ntsig loj tshaj: Nws muaj txhua qhov zoo ntawm tooj liab board vuam, thiab cov thawj coj uas tau tas sijhawm (peb lub hlis) kuj tseem tuaj yeem ua haujlwm rov qab, tab sis feem ntau ib zaug xwb.

Qhov tsis zoo: Raug rau cov kua qaub thiab av noo. Thaum siv rau theem nrab tiv thaiv soldering, nws yuav tsum tau ua kom tiav nyob rau qee lub sijhawm. Feem ntau, cov nyhuv ntawm qhov kev xav ua ob lub siab yuav ua neeg pluag. Yog tias lub sijhawm khaws cia tau ntau tshaj peb lub hlis, nws yuav tsum rov kho dua tshiab. Siv nyob rau hauv 24 teev tom qab qhib lub pob. Wg yog txheej txheem insulating, yog li qhov kev xeem ntawv yuav tsum luam tawm nrog cov ham muab tshuaj kom tshem cov thawj iste ain txheej kom hu rau tus lej PIN rau kev soj ntsuam hluav taws xob.

Txoj Kev: Ntawm cov tooj liab dawb hauv qab, txheej txheej ntawm cov yeeb yaj kiab organic yog zus los ntawm cov qauv tshuaj lom. Zaj duab xis no tau tawm tsam oxidation, thermal poob siab, thiab yog siv los tiv thaiv cov tooj liab saum npoo ntawm xeb (oxidation lossis vulcanization, thiab lwm yam) hauv ib puag ncig zoo; Nyob rau tib lub sijhawm, nws yuav tsum tau yooj yim pab nyob rau hauv qhov kev kub txuas ntxiv ntawm vuam. Flux tau raug tshem tawm sai sai rau cov soldering;