PCB kev tsim khoom
Cov txheej txheem sib dhos PCB pib nrog kev tsim cov PCB nws tus kheej. Cov kauj ruam no suav nrog kev tsim PCB tsim, uas qhia txog kev teeb tsa ntawm cov kab hluav taws xob thiab kev tso chaw ntawm cov khoom. Tus tsim yog ces pauv mus rau PCB siv cov tswv yim xws li lithography lossis etching. Tom qab kev tsim khoom, PCB raug kuaj xyuas kom paub tseeb tias nws ua tau raws li qhov xav tau tshwj xeeb, suav nrog qhov tseeb qhov ntev thiab qhov ntev.
Kev npaj cov khoom
Thaum lub PCB npaj txhij, cov kauj ruam tom ntej yog npaj cov khoom rau kev sib dhos. Qhov no suav nrog kev xa khoom los ntawm cov neeg muag khoom, txheeb xyuas lawv qhov zoo, thiab teeb tsa lawv rau txheej txheem sib dhos. Qee zaum, qhov chaw yuav xav tau kev tu lossis hloov kho, xws li kev tsim cov hlau lead, kom ntseeg tau tias lawv npaj txhij rau mounting.
Solder paste daim ntawv thov
Cov txheej txheem txuas ntxiv nrog kev siv cov tshuaj nplaum rau PCB. Ib daim stencil lossis template yog siv los xyuas kom meej daim ntawv thov, aligning lub solder paste nrog rau cov khoom pads. Cov qauv yog muab tso rau hauv PCB, thiab cov tshuaj txhuam hniav yog kis thoob plaws hauv qhov qhib kom ntseeg tau tias muaj kev pov hwm zoo ntawm thaj chaw uas cov khoom yuav raug soldered.
Muab tso rau hauv
Tom qab ntawd siv lub tshuab nqa-thiab-qhov chaw lossis manually tso cov khoom ntawm PCB. Cov Cheebtsam yuav tsum tau muab tso rau kom raug kom ua tau raws li ib txwm ua haujlwm.Lub tshuab tuaj tos-thiab-qhov chaw siv lub tshuab tsis pom kev los ua kom cov khoom sib dhos thiab muab tso rau hauv PCB, thaum kev tuav cov khoom siv yog ua tiav siv cov tweezers lossis lub tshuab nqus tsev khaws cov cuab yeej.
Reflow soldering
Thaum cov khoom nyob rau hauv qhov chaw, PCB yog dhau los ntawm lub qhov cub reflow kom solder cov khoom. Thaum tshav kub kub hauv qhov cub melts lub solder muab tshuaj txhuam, uas tom qab ntawd ntws los ntawm cov khoom siv lead ua, tsim kev sib txuas hluav taws xob muaj zog. Tom qab ntawd, lub rooj tsavxwm tau txias kom khov kho cov khoom siv, ruaj khov rau PCB.
Kev tshuaj xyuas thiab kev sim
Cov kauj ruam kawg hauv cov txheej txheem yog tshuaj xyuas thiab ntsuas cov khoom sib dhos PCB. Qhov no tuaj yeem suav nrog kev tshuaj xyuas qhov muag, kev sim ua haujlwm, lossis lwm yam kev sim tshwj xeeb raws li cov khoom xav tau. Yog tias muaj teeb meem lossis teeb meem raug txheeb xyuas, lawv yuav raug hais los ntawm kev rov ua dua lossis kho kom ntseeg tau tias PCBA ua tau raws li txhua tus qauv tsim nyog thiab ua haujlwm raug.
