Cov kauj ruam tseem ceeb nyob rau hauv 8 Txheej PCB Manufacturing Process

Cov txheej txheem tsim khoom ntawm 8-txheej PCBs suav nrog ntau cov kauj ruam tseem ceeb uas yog qhov tseem ceeb los ua kom muaj kev vam meej ntawm cov khoom lag luam zoo thiab txhim khu kev qha.Los ntawm kev tsim qauv mus rau kev sib dhos zaum kawg, txhua kauj ruam ua lub luag haujlwm tseem ceeb hauv kev ua tiav cov haujlwm ua haujlwm, ruaj khov thiab ua haujlwm zoo PCB.

Ua ntej, thawj kauj ruam nyob rau hauv 8-txheej PCB raug txheej txheem yog tsim thiab layout.Qhov no suav nrog kev tsim ib daim qauv ntawm lub rooj tsavxwm, txiav txim siab qhov kev tso kawm ntawm cov khoom, thiab txiav txim siab txog kev khiav ntawm cov kab. Cov theem no feem ntau siv cov cuab yeej tsim software xws li Altium Designer lossis EagleCAD los tsim cov duab digital ntawm PCB.

Tom qab tsim tiav, cov kauj ruam tom ntej yog kev tsim cov khoom siv hluav taws xob.Cov txheej txheem tsim khoom pib nrog xaiv cov khoom tsim nyog tshaj plaws, feem ntau yog fiberglass-reinforced epoxy, hu ua FR-4. Cov khoom no muaj cov khoom siv zoo heev thiab cov khoom siv insulating, ua rau nws zoo tagnrho rau kev tsim PCB.

Cov txheej txheem tsim khoom suav nrog ntau cov kauj ruam, suav nrog etching, txheej txheej thiab drilling.Etching yog siv los tshem tawm cov tooj liab ntau dhau ntawm lub substrate, tawm hauv cov kab thiab cov ntaub qhwv. Cov txheej txheem sib dhos yog tom qab ntawd ua kom raug cov txheej txheem sib txawv ntawm PCB. Precision yog qhov tseem ceeb thaum lub sij hawm cov kauj ruam no kom ntseeg tau tias cov txheej txheem sab hauv thiab sab nrauv tau zoo sib xws.

Drilling yog lwm kauj ruam tseem ceeb hauv 8-txheej PCB kev tsim khoom.Nws suav nrog kev drilling qhov tseeb hauv PCB kom muaj kev sib txuas hluav taws xob ntawm cov txheej txheem sib txawv. Cov qhov no, hu ua vias, tuaj yeem sau nrog cov khoom siv hluav taws xob los muab kev sib txuas ntawm cov khaubncaws sab nraud povtseg, yog li txhim kho kev ua haujlwm thiab kev ntseeg siab ntawm PCB.

Tom qab cov txheej txheem tsim khoom tiav, cov kauj ruam tom ntej yog siv daim npog ntsej muag thiab tshuaj ntsuam luam ntawv rau kev kos cim.Lub npog ntsej muag yog ib txheej nyias ntawm cov kua photoimageable polymer siv los tiv thaiv cov kab tooj liab los ntawm oxidation thiab tiv thaiv cov txuas hniav thaum sib dhos. Lub silk screen txheej, ntawm qhov tod tes, muab cov lus piav qhia ntawm cov khoom siv, cov neeg tsim qauv siv, thiab lwm yam ntaub ntawv yooj yim.

Tom qab siv lub npog ntsej muag thiab tshuaj ntsuam luam ntawv, lub rooj tsav xwm Circuit Court yuav dhau los ntawm cov txheej txheem hu ua solder paste screen printing.Cov kauj ruam no suav nrog kev siv stencil los tso ib txheej nyias ntawm cov nplaum nplaum rau ntawm qhov chaw ntawm lub rooj tsavxwm. Solder paste muaj cov hlau alloy uas yaj thaum lub sij hawm reflow soldering txheej txheem los tsim ib tug muaj zog thiab txhim khu kev qha hluav taws xob kev twb kev txuas ntawm cov khoom thiab PCB.

Tom qab siv cov tshuaj txhuam hniav, ib lub tshuab tuaj tos-thiab-qhov chaw siv los txuas cov khoom mus rau PCB.Cov tshuab no raug muab tso rau hauv cov cheeb tsam uas raug xaiv raws li cov qauv tsim. Lub Cheebtsam yog tuav nyob rau hauv qhov chaw nrog solder paste, tsim ib ntus mechanical thiab hluav taws xob sib txuas.

Cov kauj ruam kawg hauv 8-txheej PCB raug txheej txheem yog reflow soldering.Cov txheej txheem cuam tshuam nrog rau tag nrho lub rooj tsav xwm hauv Circuit Court kom tswj tau qhov kub thiab txias, melting solder paste thiab txuas mus tas li cov khoom siv rau lub rooj tsavxwm. Cov txheej txheem reflow soldering ua kom muaj kev sib txuas hluav taws xob muaj zog thiab txhim khu kev qha thaum zam kev puas tsuaj rau cov khoom siv vim overheating.

Tom qab cov txheej txheem reflow soldering tiav, PCB raug tshuaj xyuas kom zoo thiab kuaj xyuas kom ntseeg tau tias nws ua haujlwm thiab zoo.Ua ntau yam kev ntsuam xyuas xws li kev tshuaj xyuas qhov muag, kev ntsuas hluav taws xob txuas ntxiv, thiab kev sim ua haujlwm txhawm rau txheeb xyuas qhov teeb meem lossis teeb meem.

Hauv cov ntsiab lus, cov8-txheej PCB raug txheej txheemsuav nrog cov kauj ruam tseem ceeb uas yog qhov tseem ceeb los tsim lub rooj tsav xwm txhim khu kev qha thiab ua haujlwm tau zoo.Los ntawm kev tsim thiab kev teeb tsa mus rau kev tsim khoom, sib dhos thiab kev sim, txhua kauj ruam ua rau tag nrho qhov zoo thiab kev ua haujlwm ntawm PCB. Los ntawm kev ua raws li cov kauj ruam no kom meej thiab nrog rau kev mloog kom meej, cov tuam txhab tsim khoom tuaj yeem tsim cov PCBs zoo uas ua tau raws li ntau yam kev thov.