Dab tsi yog qhov tseem ceeb ntawm Flux?

NeoDen IN12 reflow qhov cub

Flux yog cov khoom siv tseem ceeb hauv PCBA Circuit Board welding.Qhov zoo ntawm flux yuav ncaj qha cuam tshuam qhov zoo ntawmreflow qhov cub.Cia peb txheeb xyuas vim li cas flux tseem ceeb heev.

1. flux vuam txoj cai

Flux tuaj yeem dais cov nyhuv vuam, vim tias cov hlau atoms nyob ze rau ib leeg tom qab diffusion, dissolution, infiltration thiab lwm yam teebmeem.Ntxiv rau qhov yuav tsum tau ua kom tau raws li kev tshem tawm cov oxides thiab cov pa phem hauv kev ua haujlwm, tab sis kuj ua kom tau raws li qhov tsis muaj corrosive, rwb thaiv tsev, noo noo tsis kam, stability, tsis muaj mob, purity thiab lwm yam yuav tsum tau.Feem ntau hais lus, nws cov khoom tseem ceeb yog tus neeg sawv cev, zaj duab xis - tsim cov tshuaj, additives, cov kuab tshuaj thiab lwm yam.

2. Tshem tawm cov oxide nyob rau saum npoo ntawm cov hlau welded

Nyob rau hauv ib puag ncig huab cua ib txwm muaj, feem ntau muaj qee cov oxides ntawm cov hlau nto ntawm lub vuam ncoo.Cov oxides no yuav muaj qee yam cuam tshuam rau kev ntub dej ntawm lub vuam thaum lub sijhawm vuam, uas yuav cuam tshuam rau cov txheej txheem vuam thiab cov txiaj ntsig ntawm vuam.reflow soldering tshuab.Yog li ntawd, cov flux yuav tsum muaj peev xwm txo tau cov oxides, thiab cov vuam ntawm PCBA ua tau zoo li qub.

3. Kev tiv thaiv theem nrab oxidation

Nyob rau hauv cov txheej txheem vuam ntawm PCBA ua, cua sov yog xav tau.Txawm li cas los xij, hauv cov txheej txheem cua sov, oxidation ceev yuav tshwm sim ntawm cov hlau nto vim qhov kub thiab txias.Lub sijhawm no, flux yog xav tau los ua lub luag haujlwm hauv kev tiv thaiv oxidation theem nrab.

4. Txo qhov nro ntawm molten solder

Vim yog lub cev daim ntawv, lub molten solder nto yuav muaj ib tug tej yam nro, thiab nto nro yuav ua rau kom ceev ntawm lub solder ntws mus rau lub vuam nto los cuam tshuam rau lub cev ntub dej nyob rau hauv lub vuam txheej txheem, thiab cov kev ua ntawm flux ntawm no. lub sij hawm yog los txo qhov nro ntawm cov kua solder, yog li ntawd lub wettability tuaj yeem txhim kho tau zoo.