Nyob rau lub sijhawm tam sim no ntawm kev loj hlob ntawm cov khoom siv hluav taws xob, txhawm rau txhawm rau ua raws li qhov tsawg tshaj plaws thiab kev sib koom ua ke ntawm cov plug-ins, ob-sided PCBs tau dhau los ua neeg nyiam, thiab ntau thiab ntau dua, cov neeg tsim qauv tsim qauv me me, ntau dua. compact thiab tsis tshua muaj nqi khoom.Nyob rau hauv cov txheej txheem ntawm cov hlau lead-dawb reflow soldering, ob-sided reflow soldering tau maj mam siv.
Ob-sided lead-free reflow soldering txheej txheem tsom xam:
Nyob rau hauv qhov tseeb, feem ntau ntawm cov uas twb muaj lawm ob-sided PCB boards tseem solder lub tivthaiv sab los ntawm reflow, thiab ces solder tus pin sab los ntawm yoj soldering.Cov xwm txheej zoo li no yog tam sim no ob-sided reflow soldering, thiab tseem muaj qee qhov teeb meem hauv cov txheej txheem uas tsis tau daws.Cov khoom hauv qab ntawm lub rooj tsavxwm loj yog ib qho yooj yim kom poob tawm thaum lub sij hawm thib ob reflow txheej txheem, los yog ib feem ntawm lub hauv qab solder sib koom ua ke melts ua rau muaj kev ntseeg siab ntawm cov khoom sib koom ua ke.
Yog li, peb yuav ua li cas thiaj li ua tiav ob-sided reflow soldering?Thawj yog siv cov kua nplaum los lo cov khoom ntawm nws.Thaum nws tig thiab nkag mus rau qhov thib ob reflow soldering, cov khoom yuav raug kho rau nws thiab yuav tsis poob.Txoj kev no yog qhov yooj yim thiab siv tau, tab sis nws yuav tsum muaj cov cuab yeej siv ntxiv thiab kev ua haujlwm.Cov kauj ruam ua kom tiav, ib txwm nce tus nqi.Qhov thib ob yog siv cov hlau nplaum uas muaj cov ntsiab lus sib txawv.Siv lub siab melting point alloy rau thawj sab thiab qis melting point alloy rau sab thib ob.Qhov teeb meem nrog rau txoj kev no yog qhov kev xaiv ntawm cov hlau tsis tshua muaj melting point yuav cuam tshuam los ntawm cov khoom kawg.Vim qhov kev txwv ntawm kev ua haujlwm kub, alloys nrog siab melting point yuav inevitably nce qhov kub ntawm reflow soldering, uas yuav ua rau kev puas tsuaj rau cov khoom thiab PCB nws tus kheej.
Rau feem ntau cov khoom, qhov nro ntawm cov molten tin ntawm qhov sib koom ua ke yog txaus los tuav hauv qab thiab tsim ib qho kev ntseeg siab ntawm kev sib koom ua ke.Tus qauv ntawm 30g / hauv 2 feem ntau yog siv rau hauv kev tsim.Qhov thib peb txoj kev yog tshuab cua txias ntawm qhov qis ntawm lub cub tawg, kom qhov kub thiab txias ntawm qhov taw tes rau hauv qab ntawm PCB tuaj yeem khaws cia hauv qab lub melting point hauv qhov thib ob reflow soldering.Vim qhov kub thiab txias sib txawv ntawm qhov chaw sab sauv thiab sab hauv, kev ntxhov siab sab hauv yog tsim, thiab cov txheej txheem zoo thiab cov txheej txheem yuav tsum tau tshem tawm kev ntxhov siab thiab txhim kho kev ntseeg tau.
Post lub sij hawm: Lub Xya hli ntuj-13-2023