Nrog rau kev nce qib txuas ntxiv thiab kev txhim kho thev naus laus zis, lub zog cia PCBAs tau siv dav hauv thaj chaw ntawm lub zog cia. Nws ua lub luag haujlwm tseem ceeb hauv cov tshuab hluav taws xob hluav taws xob, hluav taws xob tsheb, lub hnub ci hlwb thiab ntau yam khoom siv hluav taws xob. Kab lus no yuav delve rau hauv cov txheej txheem cov yam ntxwv ntawm lub zog cia pcba qhov chaw ua haujlwm, nrog rau cov ntsiab lus uas xav tau kev saib xyuas hauv cov txheej txheem ntau lawm.
1. Cov kev cai ib puag ncig
Lub zog cia PCBA nyob rau hauv tus txheej txheem ntawm kev siv, tej zaum yuav ntsib ntau yam sib txawv ib puag ncig tej yam kev mob, xws li kub, tsis tshua muaj kub, humidity, thiab lwm yam., rau cov kev cai ib puag ncig yog siab. Yog li ntawd, thaum lub sijhawm tsim khoom, kev ntsuas yuav tsum tau ua kom ntseeg tau tias PCBAs tuaj yeem ua haujlwm tau zoo nyob rau hauv ntau qhov chaw huab cua. Ntawm lawv, ambient ntsuas kub thiab ntsuas av noo yog qhov tseem ceeb.
2. Kev xaiv cov khoom siv
Muaj ntau yam ntaub ntawv koom nrog hauv lub zog cia PCBAs, xws li substrates, solder, Cheebtsam, thiab lwm yam. Thaum xaiv cov ntaub ntawv, lawv cov stability, kev ntseeg tau thiab durability yuav tsum tau txiav txim siab. Tshwj xeeb tshaj yog nyob rau hauv ib puag ncig hnyav xws li kev kub siab, kub thiab av noo, cov khoom siv yuav tsum muaj peev xwm ua haujlwm tau zoo thiab yuav tsis ua rau muaj kev puas tsuaj lossis luv luv thiab lwm yam teeb meem.
3. txheej txheem soldering
Soldering yog ib kauj ruam tseem ceeb hauv cov txheej txheem tsim hluav taws xob cia PCBAs. Siv cov txheej txheem soldering txoj cai tuaj yeem ua kom zoo thiab kev ntseeg siab ntawm cov pob qij txha. Rau lub zog cia PCBAs, cov txheej txheem kev sib koom ua ke suav nrog kev siv tshuab saum npoo av (SMT) thiab yoj soldering. Cov txheej txheem no ua kom ntseeg tau tias kev sib txuas ntawm cov khoom sib txuas thiab cov khoom siv substrate muaj zog thiab txhim khu kev qha thiab tuaj yeem ua haujlwm tau zoo nyob rau hauv ntau yam kev ua haujlwm.
4. Paub meej
Thaum lub sij hawm tsim khoom, kev saib xyuas tshwj xeeb yuav tsum tau them rau kev nthuav dav. Piv txwv li, thaum cov khoom raug soldered, lub sij hawm soldering thiab kub yuav tsum nruj me ntsis tswj kom tsis txhob muaj teeb meem zoo tshwm sim los ntawm overheating los yog tsis zoo soldering. Tsis tas li ntawd, thaum lub sij hawm mounting, yuav tsum tau them nyiaj mloog mus rau qhov tseeb orientation, txoj hauj lwm thiab qhov sib nrug ntawm cov khoom. Tsuas yog thaum cov ntsiab lus no tau ua kom ntseeg tau lub zog cia PCBAs muaj kev ua tau zoo thiab kev ntseeg tau.
5. Kev tswj kom zoo
Txhawm rau kom ntseeg tau tias qhov zoo ntawm lub zog cia PCBA, kev tswj kom zoo yog qhov tseem ceeb. Thaum lub sij hawm tsim cov txheej txheem, yuav tsum muaj kev soj ntsuam nruj nruj, nrog rau kev soj ntsuam zoo li qub, kev sim ua haujlwm, kev ntsuam xyuas kev ntseeg tau, thiab lwm yam. Tsuas yog tom qab dhau cov kev tshuaj ntsuam xyuas no peb tuaj yeem ua kom muaj kev ntseeg siab thiab ruaj khov ntawm PCBAs hauv kev siv tswv yim.
Hauv cov ntsiab lus, lub zog khaws cia PCBAs, uas yog cov khoom siv hluav taws xob tseem ceeb, muaj cov ntawv thov tseem ceeb hauv thaj chaw ntawm lub zog cia. Hauv cov txheej txheem tsim khoom, ib puag ncig yuav tsum tau ua, xaiv cov khoom siv, cov txheej txheem soldering, nthuav dav thiab kev tswj kom zoo yuav tsum raug txiav txim siab. Tsuas yog los ntawm cov txheej txheem tsim nyog thiab kev tswj hwm nruj heev tuaj yeem ua tau zoo thiab kev ntseeg siab ntawm lub zog cia PCBA cov laug cam tau lav kom ua tau raws li qhov xav tau ntawm kev siv hauv ntau qhov chaw huab cua.
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30 ntxiv rau kev tswj kom zoo thiab kev txhawb nqa engineers, 15 ntxiv rau kev muag khoom thoob ntiaj teb, raws sij hawm cov neeg siv khoom teb tsis pub dhau 8 teev, kev daws teeb meem hauv 24 teev.