Raws li ib feem tseem ceeb ntawm cov khoom siv hluav taws xob, PCBA cov txheej txheem kho yuav tsum ua raws li cov txheej txheem kev qhia tshwj xeeb thiab kev ua haujlwm kom ntseeg tau tias kev kho kom zoo thiab cov khoom siv ruaj khov. Kab lus no yuav tham txog cov ntsiab lus uas yuav tsum tau them sai sai rau thaum kho PCBA los ntawm ntau yam, vam tias yuav pab tau rau koj cov phooj ywg.
1, Kev xav tau kev ci ci
Nyob rau hauv tus txheej txheem ntawm PCBA board kho, ci kev kho mob yog ib qho tseem ceeb heev.
Ua ntej tshaj plaws, rau cov khoom tshiab yuav tsum tau nruab, lawv yuav tsum tau ci thiab dehumidified raws li lawv lub khw muag khoom rhiab heev theem thiab kev cia khoom, raws li cov kev cai ntawm "Code for the Use of Moist-sensitive Components", uas tuaj yeem ua tau. zoo tshem tawm cov dej noo hauv cov khoom thiab tsis txhob tawg, npuas thiab lwm yam teeb meem hauv cov txheej txheem vuam.
Qhov thib ob, yog tias cov txheej txheem kho yuav tsum tau ua kom sov siab tshaj 110 ° C, lossis muaj lwm cov khoom siv noo noo nyob ib ncig ntawm qhov chaw kho, nws tseem yuav tsum tau ci thiab tshem tawm cov dampness raws li qhov yuav tsum tau ua ntawm cov lus qhia, uas tuaj yeem tiv thaiv. kub kub kev puas tsuaj rau lub Cheebtsam thiab xyuas kom meej qhov zoo ntawm cov txheej txheem kho.
Thaum kawg, rau cov khoom siv dej-rhiab heev uas yuav tsum tau rov qab siv dua tom qab kho, yog tias siv cov txheej txheem kho cua kub reflux thiab infrared cua sov solder pob qij txha, nws tseem yuav tsum tau ci thiab tshem tawm cov av noo. Yog tias siv cov txheej txheem kho cua sov ntawm kev sib koom ua ke nrog kev siv phau ntawv siv, cov txheej txheem ua ntej ci tuaj yeem raug tshem tawm ntawm qhov chaw uas cov txheej txheem cua sov tswj tau.
2. Cia ib puag ncig yuav tsum
Tom qab ci, cov khoom tsis muaj dej noo, PCBA, thiab lwm yam, yuav tsum tau ua tib zoo saib xyuas qhov chaw cia khoom, yog tias qhov chaw cia siab tshaj lub sijhawm, cov khoom no thiab PCBA cov laug cam yuav tsum tau rov qab ci kom ntseeg tau tias lawv muaj kev ua haujlwm zoo thiab ruaj khov thaum lub sijhawm. siv.
Yog li ntawd, thaum kho, peb yuav tsum tau ua tib zoo saib xyuas qhov kub, av noo thiab lwm yam tsis zoo ntawm qhov chaw khaws cia kom ntseeg tau tias nws ua tau raws li qhov yuav tsum tau ua ntawm cov lus qhia tshwj xeeb, thiab tib lub sijhawm, peb yuav tsum tau kuaj xyuas qhov ci tsis tu ncua kom tsis txhob muaj peev xwm zoo. teeb meem.
3, Tus naj npawb ntawm kev kho cua sov yuav tsum tau ua
Raws li qhov yuav tsum tau muaj ntawm cov kev qhia tshwj xeeb, cov naj npawb ntawm kev kho cua sov ntawm cov khoom yuav tsum tsis pub tshaj 4 zaug, qhov tso cai ntawm kev kho cua sov ntawm cov khoom siv tshiab yuav tsum tsis pub tshaj 5 zaug, thiab cov kev tso cai ntawm kev kho cua sov ntawm cov khoom siv rov qab tshem tawm. tivthaiv yuav tsum tsis pub tshaj 3 zaug.
Cov kev txwv no yog nyob rau hauv qhov chaw kom ntseeg tau tias cov khoom siv thiab PCBA tsis raug kev puas tsuaj ntau dhau thaum cua sov ntau zaus, cuam tshuam rau lawv cov kev ua tau zoo thiab kev ntseeg tau. Yog li ntawd, tus naj npawb ntawm cov cua sov lub sij hawm yuav tsum tau nruj me ntsis tswj thaum lub sij hawm kho. Nyob rau tib lub sijhawm, qhov zoo ntawm cov khoom siv thiab PCBA boards uas tau mus txog lossis dhau qhov ntsuas cua sov yuav tsum tau ua tib zoo soj ntsuam kom tsis txhob siv lawv rau qhov tseem ceeb lossis cov cuab yeej muaj kev ntseeg siab.