PCB kev txhim kho tus cwj mem

Txhawm rau txhawm rau txhim kho kev ua haujlwm tau zoo thiab zam kev puas tsuaj rau ntu uas tsis tas yuav tsum tau welded thaum tsim khoom PCB, cov ntu no yuav tsum tau tiv thaiv nrog thaiv tus lej. Kev txhim kho PCB tus lej yog cuam tshuam nrog cov cuab yeej siv thev naus laus zis, kev siv vuam thiab cov kab yuav tsum tau ua. Nrog rau qhov siab ntxiv PCB thiab cov tsos ntawm cov hlau tsis muaj vuam siv tshuab, qhov xav tau tshiab tau muab tso rau pem hauv ntej txhawm rau txhawm rau kho cov viscosity number case thiab ua kom nws ua tau raws li qhov xav tau ntawm tus lej dav hlau luam ntawv nplaum nplaum. PCB solder number case muaj plaub theem ntawm kev txhim kho, los ntawm hom zaj duab xis qhuav thaum ntxov thiab hom thermosetting maj mam tsim mus rau ULTRAVIOLET (UV) teeb lub teeb hom, thiab tom qab ntawd pom cov duab txhim kho cov kua nplaum.

1. Tsawg viscosity tuaj yeem ua kua-jet vuam number case

Nrog kev txhim kho kev lag luam hluav taws xob, luam tawm cov tshuab hluav taws xob tag nrho nrog rau txoj hauv kev ntxiv tshwm sim rau lub sijhawm. Ntxiv txheej txheem txheej txheem muaj qhov zoo ntawm kev txuag khoom, kev tiv thaiv ib puag ncig, txheej txheem yooj yim, thiab lwm yam.

(1) tswj tus lej viscosity, kom ntseeg tau tias nws tuaj yeem txau tsis tu ncua los ntawm lub taub hau, txhawm rau tiv thaiv lub ntsaws kom tau raws li

(2) tswj cov tshuaj tiv thaiv kab mob kom nrawm, ua tiav qhov pib nrawm, tiv thaiv tus lej hauv cov substrate vim tias nkag mus thiab kis tau;

(3) Kho tus lej thixotropy kom ntseeg tau tias qhov ua tau zoo thiab rov ua dua ntawm kab ntawv luam ntawv. Rau txoj kev txhim kho ntawm cov viscosity qis tus number case, qhov tseem ceeb ntawm kev siv cov khoom qub ib txwm hloov kho, ntxiv los ntawm kev ua haujlwm lossis tsis ua haujlwm raws qib xav tau.

2. FPC vuam number case

Nrog kev txhim kho PCB kev lag luam, qhov xav tau ntawm FPC loj hlob sai, thiab cov kev xav tau tshiab tau muab tso rau pem hauv ntej rau cov khoom siv sib xws. Vim tias tooj liab hlau ntawm flexo phaj tau yooj yim rau oxidize, vuam cov khoom tiv thaiv ntawm flexo tooj liab hlau tau dhau los ua kev tshawb fawb hotspot. Cov yeeb yaj kiab tiv thaiv epoxy ib txwm qhia tau tias lub siab tawv tom qab kho thiab tsis haum rau kev hloov pauv. Yog li ntawd, tus yuam sij los daws qhov teeb meem yog qhia ua ntu ntu sib hloov pauv mus rau hauv cov qauv tsim ib txwm thiab khaws qhov qub tsis kam ua haujlwm vuam. Tus cwj mem muaj qhov ruaj khov zoo, tuaj yeem ua tau zoo hauv kev daws sodium carbonate, daws ammonia, kho cov yeeb yaj kiab khoos phis tawj, cua sov, kua qaub thiab alkali xeb khoom ua tau raws li qhov xav tau.

3. Dej-soluble alkali kev txhim kho duab thaij duab

Txhawm rau txhawm rau txo cov pa tawm ntawm cov kuab tshuaj organic hauv PCB cov txheej txheem tsim khoom thiab txo qis kev cuam tshuam ntawm cov kuab tshuaj rau ib puag ncig, cov tshuaj thaiv cov kua nplaum tau maj mam tsim los ntawm cov txheej txheem txhim kho cov kuab tshuaj txhawm rau txhawm rau txhim kho dej alkaline, thiab nyob rau xyoo tas los no, nws tau tsim los rau dej kev tsim kho tshuab. Nyob rau tib lub sijhawm, txhawm rau ua kom tau raws li qhov xav tau ntawm cov hlau tsis muaj vuam siv thev naus laus zis rau cov yeeb yaj kiab tsis kam, txhim kho qhov tsis kam mus rau qhov ua haujlwm kub.

4. LED nrog lub siab xav tau dawb cov kua nplaum

TaiyoInk thawj zaug qhia nws cov kab laug sab dawb thaiv cov xim rau LED ntim hauv xyoo 2007. Piv nrog cov kua nplaum ib txwm siv, cov kua tshuaj dawb yuav tsum tau daws cov teeb meem ntawm cov xim xim thiab ua kom nrawm dua los ntawm kev kis mus rau lub teeb mus ntev. Tsoos epoxy solder number case vim cov qauv molecular muaj benzene nplhaib, lub teeb pom kev mus ntev yog ib qho yooj yim ua rau muaj xim. Rau cov khoom siv hluav taws xob LED, cov txheej txheej tiv thaiv txheej yog txheej hauv qab cov khoom siv luminescent, yog li nws yog qhov tsim nyog los txhim kho qhov ua kom pom kev zoo ntawm cov tshuaj tiv thaiv txheej rau lub teeb, thiab tom qab ntawd txhim kho qhov ci ntawm lub teeb ci. Qhov no nthuav tawm qhov kev sib tw tshiab rau kev tshawb fawb ntawm cov khoom siv vuam tsis kam.

xaus

Kev tshawb fawb ntawm cov kua nplaum ib txwm yog qhov nyuaj hauv PCB kev lag luam. Nrog rau kev luam tawm Circuit Court los ntawm txoj kev rho tawm maj mam mus rau txoj hauv kev ntxiv, inkjet luam ntawv raws li lub hauv paus ntsiab lus ntawm kev txheej txheem ntxiv, viscosity ntawm cov kua nplaum, thixotropy thiab cov tshuaj tiv thaiv ua ntej xav tau ntau dua; Kev ua kom nrov ntawm cov hlau tsis muaj vuam siv thev naus laus zis tau tso rau yav tom ntej qhov xav tau rau qhov kub tsis kam tiv thaiv cov yeeb yaj kiab, kev txhim kho cov kab laug sab tshiab txuas sai sai xav tau coob tus kws tshawb fawb, thiab kev tshawb fawb ntawm cov kua nplaum yog nyob hauv qhov nce, uas muaj qhov zoo peev xwm