Dab tsi yuav tsum tau them nyiaj mloog rau hauv pcba tu?

PCBA ua, nyob rau hauv SMT thiab DIP plug-in soldering, qhov saum npoo ntawm cov pob qij txha yuav residual ib co flux rosin, thiab lwm yam. cuam ​​tshuam rau lub neej ntawm cov khoom.Cov seem yog qias neeg, tsis ua raws li qhov yuav tsum tau ua ntawm kev huv ntawm cov khoom, yog li pcba yuav tsum tau ntxuav ua ntej xa khoom.Cov hauv qab no coj koj los nkag siab txog cov txheej txheem tsim khoom ntawm pcba dej ntxuav qee cov lus qhia thiab kev ceev faj.

Nrog rau cov miniaturization ntawm cov khoom siv hluav taws xob, cov hluav taws xob sib txawv, raws li hom kev xaiv ua kom yooj yim, raws li cov khoom siv ntxuav, qhov tseem ceeb ntawm cov khoom lag luam rau kev tu kom zoo xaiv.

I. PCBA cov txheej txheem ntxuav

1. Kev ntxuav dej huv: tshuaj tsuag los yog nqus dej ntxuav

Kev ntxuav dej ntshiab yog siv cov dej deionized, tshuaj tsuag lossis dip ntxuav, nyab xeeb siv, qhuav tom qab ntxuav, qhov kev ntxuav no pheej yig thiab muaj kev nyab xeeb, tab sis qee qhov spoils tsis yooj yim tshem tawm.

2. Kev tu dej ib nrab

Semi-dej tu yog siv cov organic solvents thiab deionized dej, uas ntxiv ib co active agents, additives los tsim ib tug tu tus neeg saib xyuas, lub tshuab nqus tsev vacuum no muaj cov organic solvents, tsis tshua muaj toxicity, kev siv ntawm kev nyab xeeb, tab sis yuav tsum yaug nrog dej, thiab ces qhuav. .

3. Ultrasonic tu

Kev siv ultra-high zaus nyob rau hauv cov kua nruab nrab rau hauv lub zog kinetic, tsim cov npuas me me los tsoo cov khoom nto, kom cov av ntawm cov av tawm, thiaj li ua tiav cov nyhuv ntawm kev ntxuav cov av, ua tau zoo heev. , tab sis kuj txo cov electromagnetic cuam tshuam.

II.PCBA tu tshuab yuav tsum

1. PCBA nto vuam Cheebtsam yam tsis muaj kev tshwj xeeb, txhua yam khoom siv tuaj yeem siv los ntxuav PCBA pawg thawj coj saib nrog cov tshuaj ntxuav tshwj xeeb.

2. Qee yam khoom siv hluav taws xob raug txwv tsis pub hu rau tus neeg saib xyuas tshwj xeeb, xws li: cov keyboards tseem ceeb, lub qhov (socket) network, buzzer, roj teeb hlwb, LCD zaub, cov khoom yas, lo ntsiab muag, thiab lwm yam.

3. Cov txheej txheem ntxuav, tsis tuaj yeem siv cov tweezers thiab lwm yam hlau ncaj qha tiv tauj PCBA, thiaj li tsis ua kom puas PCBA board nto, khawb.

4. PCBA tom qab cov khoom siv soldering, flux residue dhau sij hawm yuav tsim cov tshuaj tiv thaiv lub cev, yuav tsum tau ntxuav kom sai li sai tau.

5. PCBA tu tiav, yuav tsum tau muab tso rau hauv qhov cub ntawm li 40-50 degrees, tom qab 30 feeb ntawm ci, thiab ces tshem tawm lub PCBA board tom qab ziab.

III.Kev ceev faj tu PCBA

1. PCBA board nto tsis tuaj yeem yog qhov seem ntawm cov dej ntws, cov hlaws dai thiab cov pob zeb;nto thiab solder pob qij txha tsis tuaj yeem muaj xim dawb, grey tshwm sim.

2. PCBA board nto tsis tuaj yeem nplaum;tu yuav tsum hnav electrostatic tes nplhaib.

3. PCBA yuav tsum hnav lub npog ntsej muag ua ntej ntxuav.

4. tau raug ntxuav PCBA board thiab tsis tau ntxuav PCBA board muab tso rau nyias thiab cim.

5. Lub rooj tsavxwm PCBA uas tau ntxuav lawm yog txwv tsis pub kov ncaj qha rau saum npoo ntawm tes.