PCB saum npoo mount thev naus laus zis (SMT) sib dhos yog ib txoj kev ua kom muaj ntau theem. Hauv qab no muaj cov lus qhia ntxaws ntxaws ntawm txhua kauj ruam:
1. Ua ntej -}} Kev npaj ntau lawm:
Pib los ntawm tau txais cov neeg siv khoom -}} muab cov ntaub ntawv tsim qauv pcb, bom (cov nqi ntawm cov ntaub ntawv), thiab cov kev qhia tshwj xeeb. Tom qab ntawd tsim cov ntaub ntawv engineering - xws li kev sib koom tes ua ke thiab stencil tsim cov ntaub ntawv tsim qauv - kom ntseeg tau tias kev tsim khoom zoo.
2. Kev npaj ua haujlwm & tshuaj xyuas:
Ua haujlwm rau cov khoom raws li cov foob pob thiab ua cov kev kuaj pom zoo. Cov theem no tseem ceeb heev raws li kev tivthaiv zoo ncaj qha cuam tshuam cov khoom lag luam kawg. Kev tshuaj xyuas kev ruaj khov ua kom tiav txhua qhov chaw ua raws cov qauv zoo.
3. SMT Cheebtsam Kev Tso Cai:
Luag tus PCB ntawm lub txhab -} Thiab - qhov chaw tshuab ua haujlwm. Siv cov kev tso ua kom sib koom ua ke cov ntaub ntawv, thaj chaw sib dhos kom zoo rau kev sib xyaw -}}}}}}}}}}} pads. Tshuab raug thiab ruaj khov yog tseem ceeb heev ntawm no, cuam tshuam nrog kev tso ua tau zoo thiab ua tau zoo.
4. Xav tawm cov soldering:
Tom qab tivthaiv qhov chaw, PCB cov lus qhia tawm tsam cov kev xav sib cav sib ceg. Kev tswj cua kub kub yaj lub tshuab dhos ua cov hlua khi, muab cov khoom siv sib txuas mus tas li rau PCB. Piv txwv li kub profiling (feem ntau 230℃-2 thiab sijhawm yog qhov tseem ceeb los tiv thaiv kev puas tsuaj thermal.
5. Kev Soj Ntsuam Zoo & Zaum Kawg:
Tshaj tawm - soldering kev soj ntsuam muaj xws li:
Kev tshuaj xyuas
Kev Ntsuas Hluav Taws Xob (Kev Sib Txuas Ntxiv / Rwb Cev Tswv Rov Los Tseem Ceeb)
Caw kaw lus kho qhov muag (AOI)
Txheeb xyuas qhov tseeb qhov chaw tiv thaiv, tshuab sib koom ua ke ncaj ncees, thiab tsis muaj cov luv / qhib. Thaum kawg, ua zaum kawg ua ke ib tus neeg siv khoom yuav tsum tau (piv txwv li, kev teeb tsa vaj tse, xaim).
Cov tub ntxhais SMT workflow muaj:
① Ua ntej -}} Cov Khoom Siv Ntau Lawm → Kev ntsuas kev sib xyaw ua ke → Reflowing Soldering ⑤ ⑤ QC & Sib dhos.
Txhua theem yog qhov tseem ceeb rau PCB SMT manufacturing txheej txheem.
