Cov laj thawj rau poob ntawm cov roj ntsuab hauv kev tiv thaiv vuam ntawm lub rooj tsav xwm hauv Circuit Court thiab teeb meem dab tsi yuav tshwm sim los ntawm cov roj ntsuab tuab heev

Feem ntau, peb pom zaj duab xis ntsuab saum npoo av Circuit Court board. Qhov tseeb, qhov no yog lub rooj tsav xwm hauv vaj huam sib luag solder tiv tus number case. Nws tau luam tawm ntawm PCB feem ntau los tiv thaiv kev siv vuam, yog li nws tseem hu ua solder resist ink. Cov PCB feem ntau siv cov tshuaj tiv thaiv cov inks yog ntsuab, xiav, dawb, dub, daj thiab liab, ntxiv rau ntau yam ntawm lwm yam xim tsis tshua muaj. Cov txheej no ntawm tus lej tuaj yeem npog cov neeg xav tau yam tsis xav tau ntau dua li cov ntaub qhwv, tsis txhob siv cov khoom siv luv luv thiab txuas ntxiv kev pab lub neej ntawm PCB hauv cov txheej txheem siv; Nws yog feem ntau hu ua tsis kam vuam lossis tiv thaiv vuam; Txawm li cas los xij, thaum PCB ua tiav, muaj ntau yam teeb meem los ntawm lub sijhawm dhau los, thiab ib qho ntawm cov teeb meem feem ntau yog poob ntawm cov laug cam tiv thaiv cov roj ntsuab ntawm lub rooj tsav xwm. Dab tsi yog vim li cas rau qhov poob ntawm tus number case ntawm lub rooj tsav xwm Circuit Court?

Muaj peb qhov laj thawj tseem ceeb rau kev poob ntawm cov roj ntsuab rau kev tiv thaiv vuam ntawm lub rooj tsav xwm hauv Circuit Court:

Ib qho yog tias thaum luam ntawv tus lej ntawm PCB, kev kho ua ntej tsis tau ua tiav. Piv txwv li, muaj cov xim av, plua plav lossis tsis huv rau ntawm PCB, lossis qee qhov chaw tau oxidized. Qhov tseeb, txoj hauv kev yooj yim tshaj plaws los daws qhov teeb meem no yog ua ntej kho dua, tab sis sim ua kom huv cov xim, tsis huv lossis txheej oxide saum npoo ntawm PCB;

Qhov laj thawj thib ob yog vim nws tuaj yeem yog vim lub rooj tsav xwm hluav taws xob tau ci hauv qhov cub rau lub sijhawm luv lossis qhov ntsuas kub tsis txaus, vim tias lub rooj tsav xwm hauv Circuit Court yuav tsum tau ci ntawm qhov kub siab tom qab luam tawm cov thermosetting number case. Yog tias qhov ntsuas kub lossis lub sijhawm tsis txaus, lub zog ntawm tus number case ntawm lub rooj tsavxwm yuav tsis txaus, thiab thaum kawg cov laug tsis kam ntawm lub rooj tsav xwm hauv Circuit Court yuav poob.

Qhov laj thawj thib peb yog teeb meem tsis zoo los yog tus lej tas sij hawm. Ob qho ntawm cov laj thawj no yuav ua rau tus number case ntawm lub rooj tsav xwm Circuit Court poob. Txhawm rau daws qhov teeb meem no, peb tsuas tuaj yeem hloov cov khoom siv tus lej.

IPC tus qauv ntawm kev lag luam hauv pawg thawj coj saib xyuas tsis qhia meej txog cov roj ntsuab tuab nws tus kheej. Feem ntau, cov roj ntsuab tuab ntawm kab saum npoo yog tswj ntawm 10-35um; Yog tias cov roj ntsuab tau tuab heev thiab ntau dua li cov ntaub qhwv, yuav muaj ob qhov phom sij zais:

Ib qho yog tias cov phaj tuab tshaj li tus qauv. Cov roj ntsuab tuab tuab tuab dhau yuav ua rau cov phaj tuab tuab heev, uas nyuaj rau nruab lossis txawm siv tsis tau;

Qhov thib ob, cov hlau ntxaij tau ua los ntawm cov roj ntsuab thaum lub sijhawm SMT, thiab cov tuab ntawm cov kab laug sab muab luam tawm rau ntawm lub ncoo yog pob los ntawm pob, uas yog ib qho yooj yim ua rau luv Circuit Court ntawm pins tom qab reflow soldering.