Kev paub me me ntawm qhov chaw nres tsheb soldering - kev ua haujlwm tshwj xeeb thiab kev ceev faj
1. Lub inclination ntawm yoj soldering khiav
Txoj kev taug kev inclination yog pom tseeb dua rau kev siv thev naus laus zis, tshwj xeeb tshaj yog thaum cov khoom siv SMT high-density xav tau rau vuam tshuab. Yog hais tias qhov inclination me me dhau lawm, kev sib txuas yog yooj yim heev rau kev tshwm sim, tshwj xeeb tshaj yog nyob rau hauv cov kev xav tau ntawm soldering, lub cheeb tsam ntawm SMT cov khoom siv yog heev nquag rau bridging; tab sis yog hais tias qhov inclination kuj loj, txawm hais tias nws yuav txo tau cov bridging Txawm li cas los xij, tus nqi ntawm cov tin noj los ntawm qhov chaw tin yuav tsawg dua, thiab nws yog qhov ua rau tsis muaj tseeb. Yog li ntawd, peb yuav tsum tau kho cov trajectory gradient kom nyob nruab nrab ntawm 5 thiab 7 degree.
2. Tus nqi ntawm wiped flux
Txhawm rau txhim kho cov kev xav tau ntawm kev siv tshuab txuas ntxiv, peb yuav tsum siv cov khoom siv nyias nyias rau hauv qab ntawm PCB pawg thawj coj saib, uas yuav tsum tau ua tib zoo so thiab tsis tuab heev, tshwj xeeb tshaj yog rau qee yam khoom uas yuav tsum tau mus los ntawm kev tsis tu ncua.
3. Lub preheating kub ntawm pcb Circuit Court board ntawm cov khoom siv hluav taws xob
Preheating lub pcb Circuit Court board ua ntej yog kom zoo dua evaporate cov kuab tshuaj nyob rau hauv lub pre-applied flux thaum nws nkag mus rau hauv lub tin, thiab tsis tu ncua txhim kho lub wetting degree ntawm lub pcb Circuit Court board thiab muaj pes tsawg leeg efficiency ntawm solder pob qij txha; Nyob rau tib lub sijhawm, preheating ua ntej tseem yuav ua rau qhov kub thiab txias ntawm PCB Circuit Board tsub kom maj mam nce mus txog qhov ntsuas kub kom tiv thaiv PCB Circuit Board los ntawm warping thiab deformation vim ncaj qha thermal shock. Feem ntau hais lus, lub preheating kub yog tswj ntawm 180 ~ 200 degree, thiab lub sij hawm preheating yog 1 ~ 3 feeb.
4. Qhov kub thiab txias nyob rau hauv lub yoj soldering rauv
Vuam kub yog ib qho tseem ceeb cuam tshuam rau vuam kev xav tau. Qhov ntsuas kub qis dua tuaj yeem txo qhov ductility thiab ntub dej ntawm cov khoom siv, uas tuaj yeem ua rau lub ncoo lossis qhov kawg ntawm cov khoom siv hluav taws xob tsis ntub tag, thiab nws yooj yim rau cov teeb meem soldering xws li virtual soldering, cusp, thiab bridging. . Kev kub siab ntau dhau yuav ua rau cov oxidation ntawm cov ntaub qhwv, cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob, uas yuav yooj yim ua rau cov khoom siv tsis zoo. Yog li, koj tuaj yeem tswj tau qhov kub thiab txias raws li qhov sib txawv ntawm cov solder thiab pcb circuit boards.
5. Lub kaum sab xis ntawm yoj soldering
Qhov siab tshaj plaws yuav hloov vim lub sijhawm ua haujlwm vuam. Peb yuav tsum hloov kho kom tsim nyog thaum lub sij hawm vuam txheej txheem los xyuas kom meej tias cov txheej txheem vuam tau ua tiav ntawm lub kaum sab xis kom zoo. Lub ncov lub kaum ntse ntse yog raws li qhov tseeb tias qhov tob ntawm tin nias yog 1/2 ~ 1/3 ntawm lub thickness ntawm PCB board.
