CovPCB Circuit BoardKev hloov pauv tas li nrog kev nce qib ntawm cov txheej txheem thev naus laus zis, tab sis raws li txoj cai, ua tiav PCB pawg thawj coj saib xyuas yuav tsum luam tawm lub rooj tsav xwm hauv Circuit Court, tom qab ntawd txiav lub rooj tsav xwm hauv Circuit Court, txheej txheem tooj liab clad laminate, hloov lub rooj tsav xwm Circuit Court, Corrosion, drilling, pretreatment, thiab vuam tsuas tuaj yeem siv tau tom qab cov txheej txheem ntau lawm.Cov hauv qab no yog cov ncauj lus kom ntxaws txog cov txheej txheem tsim khoom ntawm PCB Circuit Board.
Tsim daim duab schematic raws li qhov kev xav tau ntawm Circuit Court.Kev tsim qauv ntawm daim duab schematic feem ntau yog ua raws li kev ua haujlwm ntawm hluav taws xob ntawm txhua qhov khoom kom tsim nyog raws li qhov xav tau.Daim duab kos duab tuaj yeem qhia meej txog cov haujlwm tseem ceeb ntawm PCB Circuit Board thiab kev sib raug zoo ntawm ntau yam khoom.Kev tsim ntawm daim duab schematic yog thawj kauj ruam hauv cov txheej txheem tsim khoom PCB, thiab nws kuj yog ib kauj ruam tseem ceeb heev.Feem ntau cov software siv los tsim Circuit Court schematics yog PROTEl.
Tom qab kev tsim schematic tiav lawm, nws yog ib qho tsim nyog yuav tsum tau ntxiv pob txhua yam los ntawm PROTEL los tsim thiab paub txog ib daim phiaj uas zoo li qub thiab qhov loj ntawm cov khoom.Tom qab hloov kho cov pob khoom, ua kom kho / Teeb Kev Xaiv / tus pin 1 txhawm rau teeb tsa pob siv taw tes ntawm thawj tus pin.Tom qab ntawd ua Daim Ntawv Ceeb Toom / Cheeb Tsam Cov Cai los teeb tsa tag nrho cov cai yuav tsum tau kuaj xyuas, thiab OK.Nyob rau ntawm no, lub pob yog tsim.
Tsim kom muaj PCB raug cai.Tom qab lub network tsim, txoj hauj lwm ntawm txhua qhov yuav tsum tau muab tso rau raws li qhov loj ntawm PCB vaj huam sib luag, thiab nws yog ib qho tsim nyog los xyuas kom meej tias cov txhuas txhuas cov khoom tsis hla thaum tso.Tom qab qhov kev tso kawm ntawm cov khoom tiav lawm, kev tshuaj xyuas DRC thaum kawg yog ua los txhawm rau tshem tawm tus pin lossis cov hlau lead hla qhov yuam kev ntawm txhua yam khoom thaum xaim.Thaum txhua qhov yuam kev raug tshem tawm, ua tiav cov txheej txheem tsim pcb tiav.
Print circuit board: Luam tawm lub rooj tsav xwm kos duab nrog rau daim ntawv hloov chaw, ua tib zoo saib rau sab npluav ntawm koj tus kheej, feem ntau luam tawm ob lub rooj tsav xwm hauv Circuit Court, uas yog, luam ob lub rooj tsav xwm hauv ib daim ntawv.Ntawm lawv, xaiv ib qho uas muaj qhov zoo tshaj plaws luam ntawv los ua lub rooj tsav xwm hauv Circuit Court.
Txiav cov tooj liab clad laminate, thiab siv lub phaj photosensitive los ua tag nrho cov txheej txheem daim duab ntawm lub rooj tsav xwm Circuit Court.Copper-clad laminates, uas yog, Circuit Court boards them nrog tooj liab zaj duab xis ntawm ob sab, txiav cov tooj liab-clad laminates rau hauv qhov loj ntawm Circuit Court board, tsis loj heev, kom txuag tau cov ntaub ntawv.
Pretreatment ntawm tooj liab clad laminates: siv cov ntawv xuab zeb zoo los txhuam tawm cov oxide txheej ntawm qhov chaw ntawm tooj liab clad laminates kom paub meej tias cov toner ntawm cov ntawv thermal hloov tuaj yeem muab luam tawm ntawm cov tooj liab clad laminates thaum hloov lub rooj tsavxwm.Ci tag nrog tsis pom stains.
Hloov cov ntawv luam tawm Circuit Board: Txiav cov ntawv luam tawm rau hauv qhov tsim nyog, muab cov ntawv luam tawm ntawm lub rooj tsav xwm sab hauv ntawm cov tooj liab clad laminate, tom qab sib dhos, muab cov tooj liab clad laminate tso rau hauv lub tshuab hloov thermal, thiab xyuas kom meej qhov kev hloov thaum muab tso rau hauv daim ntawv. tsis yog misaligned.Feem ntau hais lus, tom qab 2-3 kev hloov pauv, lub rooj tsav xwm hluav taws xob tuaj yeem hloov mus rau cov tooj liab clad laminate.Lub tshuab hloov thermal tau raug preheated ua ntej, thiab qhov kub thiab txias yog teem rau ntawm 160-200 degrees Celsius.Vim qhov kub thiab txias, thov xyuam xim rau kev nyab xeeb thaum ua haujlwm!
Corrosion circuit board, reflow soldering tshuab: thawj zaug xyuas seb qhov kev hloov pauv puas tiav ntawm lub rooj tsav xwm hauv Circuit Court, yog tias muaj ob peb qhov chaw tsis zoo, koj tuaj yeem siv tus cwj mem roj dub los kho.Tom qab ntawd nws tuaj yeem corroded.Thaum cov zaj duab xis tooj liab raug rau ntawm lub rooj tsav xwm Circuit Court yog corroded kiag li, lub rooj tsav xwm Circuit Court raug tshem tawm los ntawm cov kua corrosive thiab ntxuav, thiaj li hais tias ib tug Circuit Court board yog corroded.Cov tshuaj muaj pes tsawg leeg ntawm cov tshuaj corrosive yog concentrated hydrochloric acid, concentrated hydrogen peroxide, thiab dej hauv qhov sib piv ntawm 1: 2: 3.Thaum npaj cov tshuaj corrosive, ntxiv dej ua ntej, ces ntxiv concentrated hydrochloric acid thiab concentrated hydrogen peroxide.Yog hais tias cov concentrated hydrochloric acid, concentrated hydrogen peroxide los yog cov tshuaj corrosive tsis ceev faj txaws rau ntawm daim tawv nqaij los yog khaub ncaws thiab ntxuav nws nrog dej huv raws sij hawm.Txij li thaum siv cov tshuaj corrosive muaj zog, nco ntsoov ua tib zoo saib xyuas kev nyab xeeb thaum ua haujlwm!
Circuit board drilling: Lub rooj tsav xwm Circuit Court yog los ntxig cov khoom siv hluav taws xob, yog li nws yog qhov tsim nyog los laum lub rooj tsav xwm Circuit Court.Xaiv cov kev xyaum sib txawv raws li qhov tuab ntawm cov pins ntawm cov khoom siv hluav taws xob.Thaum siv lub laum los laum qhov, lub rooj tsav xwm Circuit Court yuav tsum tau nias kom ruaj khov.Qhov ceev ntawm qhov xyaum yuav tsum tsis txhob qeeb heev.Thov saib tus neeg teb xov tooj kom zoo.
Circuit board pretreatment: Tom qab drilling, siv cov ntawv xuab zeb zoo los polish tawm lub toner npog lub rooj tsavxwm, thiab ntxuav lub rooj tsavxwm nrog dej huv.Tom qab dej qhuav, siv ntoo thuv dej rau sab nrog lub voj voog.Txhawm rau kom ua kom lub zog ntawm cov rosin, peb siv lub tshuab cua kub los ua kom sov lub rooj tsavxwm, thiab cov rosin tuaj yeem khov hauv 2-3 feeb xwb.
Vuam cov khoom siv hluav taws xob: Tom qab ua tiav kev ua haujlwm vuam, ua qhov kev ntsuam xyuas tag nrho ntawm lub rooj tsav xwm hauv Circuit Court.Yog hais tias muaj teeb meem thaum lub sij hawm xeem, nws yog ib qhov tsim nyog los txiav txim qhov chaw ntawm qhov teeb meem los ntawm schematic daim duab tsim nyob rau hauv thawj kauj ruam, thiab ces re- solder los yog hloov cov khoom.ntaus ntawv.Thaum qhov kev xeem dhau los ua tiav, tag nrho lub rooj tsav xwm Circuit Court tiav.
Post lub sij hawm: May-15-2023