Kev sib dhos lossis txheej txheem tsim khoom ntawm a luam tawm hauv Circuit Court board (PCB) koom nrog ntau qib. Tag nrho cov kauj ruam no yuav tsum mus ua tes kom ua tiav PCB sib dhos (PCBA). Kev sib koom ua ke ntawm ib kauj ruam thiab zaum kawg yog qhov tseem ceeb heev. Ib qho ntxiv, cov tswv yim yuav tsum tau txais cov lus tawm tswv yim los ntawm qhov tso tawm, uas ua rau nws yooj yim dua rau taug qab thiab daws qhov yuam kev thaum ntxov. Cov kauj ruam twg koom nrog hauv kev sib dhos PCB? Nyeem rau xyuas seb.

Cov kauj ruam koom nrog hauv PCB txheej txheem sib dhos

PCBA thiab cov txheej txheem tsim khoom koom nrog ntau qib. Txhawm rau kom tau txais qhov zoo tshaj plaws ntawm cov khoom kawg, ua cov theem hauv qab no:

Kauj Ruam 1: Ntxiv cov kua nplaum: Qhov no yog qhov pib ntawm txheej txheem sib dhos. Nyob rau theem no, muab tshuaj txhuam ntxiv rau cov khoom tiv thaiv qhov twg los xij uas xav tau vuam. Muab cov kua nplaum tso rau ntawm lub ncoo thiab lo rau hauv qhov chaw raug nrog kev pab ntawm lub ncoo. Lub vijtsam no yog tsim los ntawm PCB cov ntaub ntawv nrog qhov.

Kauj Ruam 2: Muab cov khoom tivthaiv: Tom qab cov tshuaj txhuam cov tshuaj txhuam tau ntxiv rau hauv ncoo ntawm cov khoom siv, nws yog lub sijhawm los tso cov khoom. PCB dhau los ntawm lub tshuab uas tso cov khoom no ncaj qha rau ntawm lub ncoo. Qhov nro muab los ntawm cov tshuaj txhuam txhuam tuav lub rooj sib txoos nyob hauv qhov chaw.

Kauj Ruam 3: Reflux rauv: Cov kauj ruam no yog siv txhawm rau txhim kho cov khoom siv tas mus li rau lub rooj tsavxwm. Tom qab cov khoom sib dhos tau muab tso rau ntawm lub rooj tsavxwm, PCB dhau los ntawm cov khoom siv rov ua kom sov rov ua dua tshiab. Kev tswj cua sov ntawm lub qhov cub melts cov laug ntxiv hauv thawj kauj ruam, txuas mus tas li los ua ke.

Kauj Ruam 4: Kev yoj yoj yoj: Hauv cov kauj ruam no, PCB tau dhau los ntawm nthwv dej ntawm cov kua nplaum yaj. Qhov no yuav tsim kom muaj kev sib txuas hluav taws xob ntawm cov laug, PCB ncoo thiab cov khoom sib txuas.

Kauj Ruam 5: Ntxuav: Txij ntawm no mus, txhua qhov txheej txheem welding tau ua tiav. Thaum lub sijhawm siv vuam, cov dej ntws ntau tuaj yeem tsim nyob ib puag ncig ntawm qhov sib koom ua ke. Raws li lub npe cuam tshuam, cov kauj ruam no cuam tshuam nrog kev ntxuav cov dej seem. Ntxuav cov dej ntws nrog cov dej deionized thiab cov kuab tshuaj. Los ntawm cov theem no, PCB sib dhos ua tiav. Cov kauj ruam tom ntej yuav ua kom ntseeg tau tias kev sib dhos ua tiav kom raug.

Kauj Ruam 6: Kuaj: Nyob rau theem no, PCB tau sib sau ua ke thiab kev tshuaj xyuas pib ntsuas qhov chaw ntawm cov khoom. Qhov no tuaj yeem ua los ntawm ob txoj kev:

L Phau Ntawv Qhia: Qhov kev tshuaj xyuas no feem ntau yog ua los ntawm cov khoom me me, cov naj npawb ntawm cov khoom tsis ntau tshaj ib puas.

L Tsis Siv Neeg: Ua qhov kev txheeb xyuas no txhawm rau txheeb xyuas kev sib txuas tsis zoo, cov khoom tsis raug, cov khoom siv tsis raug, thiab lwm yam.