1. Siv lub sijhawm
Kev siv cov hmoov lead-free solder paste ua raws li lub hauv paus ntsiab lus ntawm "thawj hauv, tom qab ntawd tawm", ua ntej siv cov khoom siv ua ntej ntawm cov hmoov lead-free solder paste, thiab tsis tuaj yeem siv sijhawm ntev dua 6 lub hlis (tsis qhib).
2. Ib puag ncig tus qauv
Qhov ntsuas kub sab hauv tsev yuav tsum tswj tau ntawm 22-28 degree thiab qhov txheeb ze av noo RH40-60 feem pua yog qhov ua haujlwm kub zoo tshaj plaws.
3. Kev kub ntxhov
Nqa cov hmoov lead-free solder paste tawm ntawm lub tub yees, muab tso rau hauv qhov chaw txias thiab cia nws sov li ib txwm, tsawg kawg yog 4 teev, thiab tsis txhob qhib lub foob thaum sov.
4. Kev tshuaj xyuas
Tom qab ua kom sov, tus neeg teb xov tooj yuav tsum xyuas seb puas muaj cov khoom qhuav qhuav ntawm cov tshuaj txhuam hniav, yog tias muaj, qhia rau tus kws ua haujlwm PE kom daws nws.
5. Sib tov
Txhawm rau kom ntseeg tau tias qhov sib xws thiab sib xws ntawm cov tshuaj muab tshuaj txhuam hauv cov txheej txheem soldering, cov tshuaj txhuam yuav tsum tau nplawm kom zoo ua ntej siv, siv lub tshuab nplawm lub sij hawm ntawm 1-3 feeb thiab phau ntawv stirring lub sij hawm ntawm 3-5 feeb.
6. Kev luam ntawv
① Thaum ntxiv cov tshuaj txhuam hniav, siv "me me, ntau zaus" txoj hauv kev los ua kom cov khoom siv ntawm cov stencil los xyuas kom meej qhov zoo ntawm cov tshuaj txhuam.
② Cov kua nplaum sib txawv yuav tsum tsis txhob sib xyaw. Thaum hloov ntau hom tshuaj txhuam, ntxuav cov stencil thiab scraper.
③ Rau hnub dhau los uas tsis siv cov tshuaj txhuam hniav, nws yuav tsum tau tov nrog cov tshiab qhib cov tshuaj txhuam hniav hauv qhov sib piv ntawm 1: 2.
7. Ntxuav
Thaum tsis siv cov stencil, ntxuav lub ntsej muag nrog cov ntaub qhwv moistened nrog cawv, tom qab ntawd txhuam lub qhov ncauj stencil nrog txhuam hniav thiab thaum kawg txhuam ob sab ntawm cov stencil nrog ib daim ntaub tsis muaj fiber ntau thiab muab tso rau hauv qhov sib thooj stencil tom qab. tshuaj xyuas tias yog lawm.
Kev khaws cia saum toj no thiab kev siv cov khoom siv lead-free solder paste specifications yog feem ntau siv nyob rau hauv lub Hoobkas, nyob rau hauv cov txheej txheem SMT ntau lawm, ua rau qhov zoo ntawm cov hlau lead-free solder paste yuav muaj ntau yam teeb meem, tab sis kuj xav tau cov neeg ua hauj lwm kom zoo. , kom ua kom zoo tshaj plaws ntawm solder paste printing.
