Cov txheej txheem ntawm cov cua kub reflow soldering yog qhov tseem ceeb ntawm kev hloov hluav taws xob.Ua ntej pib "ua noj" lub hom phiaj lub rooj tsavxwm, lub reflow qhov cub qhov kub yuav tsum tau teeb tsa.
Reflow qhov cub cheeb tsam kub yog ib qho teeb meem uas lub tshav kub yuav tsum tau rhuab kom ncav cuag qhov kub thiab txias taw tes.Qhov no yog txheej txheem kaw lub voj kaw siv lub tswv yim tswj PID niaj hnub.Cov ntaub ntawv ntawm cov cua kub kub nyob ib ncig ntawm qhov tshwj xeeb cua sov no yuav raug muab rov qab rau tus tswj, uas txiav txim siab qhib lossis tawm lub zog cua sov.
Muaj ntau yam uas cuam tshuam rau lub rooj tsavxwm muaj peev xwm ua kom sov kom raug.Cov yam tseem ceeb yog:
- Thawj PCB kub
Nyob rau hauv feem ntau ntawm cov xwm txheej, thawj zaug PCB kub yog tib yam li chav tsev kub.Qhov ntau dua qhov sib txawv ntawm PCB kub thiab qhov cub chamber kub, qhov ceev ntawm PCB board yuav tau txais cua sov.
- Reflow qhov cub chamber kub
Reflow qhov cub chamber kub yog qhov kub cua kub.Tej zaum nws yuav cuam tshuam rau qhov cub teeb kub ncaj qha;txawm li cas los xij, nws tsis zoo ib yam li tus nqi ntawm kev teeb tsa taw tes.
- Thermal tsis kam ntawm tshav kub hloov
Txhua yam khoom muaj thermal tsis kam.Cov hlau tsis muaj thermal tiv taus ntau dua li cov ntaub ntawv tsis yog hlau, yog li tus naj npawb ntawm PCB txheej thiab cooper thickness yuav cuam tshuam rau cov cua sov hloov.
- PCB Thermal Capacitance
PCB thermal capacitance cuam tshuam cov thermal stability ntawm lub hom phiaj board.Nws kuj yog qhov tseem ceeb parameter nyob rau hauv kom tau zoo soldering.Lub PCB thickness thiab cov khoom 'thermal capacitance yuav cuam tshuam rau kev hloov hluav taws xob.
Qhov xaus yog:
Qhov cub teeb kub tsis zoo ib yam li PCB kub.Thaum koj yuav tsum tau ua kom zoo dua qhov reflow profile, koj yuav tsum tau soj ntsuam lub rooj tsav xwm tsis xws li board thickness, tooj liab thickness, thiab cov khoom siv nrog rau kev paub txog koj qhov cub reflow lub peev xwm.
Lub sij hawm xa tuaj: Plaub Hlis-07-2022