Dab tsi yog vim li cas rau qhov raug tooj liab nyob rau hauv cov txheej txheem cua kub theem ntawm PCB Circuit Board?

Cov cua kub theem yog muab tso rau hauv Circuit Court board nyob rau hauv molten solder, thiab tom qab ntawd siv cov cua kub los tshuab tawm ntau tshaj solder rau nws nto thiab metallized qhov kom tau ib tug du, uniform thiab kaj solder txheej nrog zoo solderability. Cov txheej yog kiag li tsis muaj tooj liab. Cov tooj liab raug rau saum npoo ntawm lub ncoo thiab hauv qhov metallized tom qab cua kub leveling yog ib qho teeb meem tseem ceeb hauv kev tshuaj xyuas cov khoom tiav, thiab nws yog ib qho laj thawj rau kev rov ua haujlwm ntawm cov cua kub leveling. Yog li, dab tsi yog vim li cas rau PCB kub cua theem kom nthuav tawm tooj liab?

1. Tsis txaus pretreatment thiab tsis zoo roughening. Qhov zoo ntawm cov cua kub leveling ua ntej kev kho mob muaj kev cuam tshuam zoo rau qhov zoo ntawm cov cua kub leveling. Cov txheej txheem no yuav tsum tau tshem tawm tag nrho cov roj, impurities thiab oxide txheej ntawm cov ntaub so ntswg kom muab cov tooj liab tshiab thiab tawv tawv rau tin immersion. Cov txheej txheem pretreatment feem ntau yog siv tshuab txau. Qhov tshwm sim ntawm cov tooj liab raug tshwm sim los ntawm kev ua tsis zoo pretreatment tshwm sim nyob rau hauv ntau qhov ntau, thiab cov ntsiab lus tooj liab raug feem ntau muab faib rau tag nrho cov board nto, thiab nws hnyav dua ntawm ntug. Thaum muaj qhov xwm txheej zoo sib xws, kev tshuaj xyuas tshuaj ntawm cov tshuaj micro-etching yuav tsum tau ua tiav, qhov thib ob pickling tov yuav tsum tau kuaj xyuas, qhov concentration ntawm cov tshuaj yuav tsum tau kho, thiab cov tshuaj uas muaj kuab paug rau lub sij hawm ntev. kev siv yuav tsum tau hloov, thiab cov tshuaj tsuag yuav tsum tau kuaj xyuas kom smoothness. Kev ncua sij hawm kho kom raug kuj tuaj yeem txhim kho kev kho mob.

2. Qhov saum npoo ntawm lub ncoo tsis huv, thiab muaj cov khoom seem ntawm cov ntaub so ntswg tiv thaiv cov ntaub so ntswg. Feem ntau cov chaw tsim khoom siv puv npo luam ntawv ua kua photosensitive solder tiv thaiv tus number case, thiab tom qab ntawd tshem tawm cov solder ntau dhau los ntawm kev raug thiab kev loj hlob kom tau txais lub sij hawm-sensitive solder resist qauv. Txawm hais tias muaj qhov tsis xws luag ntawm daim npog ntsej muag zaj duab xis, seb qhov muaj pes tsawg leeg thiab qhov kub thiab txias ntawm tus tsim tawm yog qhov tseeb, seb qhov kev loj hlob sai, uas yog, seb qhov kev txhim kho yog qhov tseeb, thiab lwm yam, ib qho ntawm cov xwm txheej no yuav tawm ntawm qhov seem ntawm qhov daim ntaub. PCB tsim feem ntau yuav tsum teeb tsa ib qho kev tshuaj ntsuam xyuas sab hauv ntawm cov duab kos thiab metallized qhov ua ntej cov txheej txheem kho kom ntseeg tau tias cov ntaub qhwv thiab cov qhov metallized ntawm lub rooj tsav xwm luam ntawv xa mus rau cov txheej txheem tom ntej yog huv si thiab tsis muaj cov ntaub npog ntsej muag.

3. Kev ua haujlwm flux tsis txaus. Lub luag hauj lwm ntawm lub flux yog los txhim kho cov ntub dej ntawm tooj liab nto, tiv thaiv lub laminate nto los ntawm overheating, thiab muab kev tiv thaiv rau lub solder txheej. Yog tias qhov kev ua haujlwm flux tsis txaus, qhov ntub dej ntawm qhov tooj liab tsis zoo, thiab cov khoom siv tsis tuaj yeem npog lub ncoo, thiab qhov tshwm sim ntawm cov tooj liab raug zoo ib yam li cov khoom tsis zoo pretreatment. Nthuav lub sij hawm pretreatment tuaj yeem txo qhov tshwm sim ntawm tooj liab. Kev xaiv ntawm flux nrog ruaj khov thiab txhim khu kev qha zoo los ntawm cov txheej txheem cov kws tshaj lij muaj qhov cuam tshuam tseem ceeb ntawm huab cua kub leveling. Zoo heev flux yog qhov guarantee ntawm qhov zoo ntawm huab cua kub leveling.