Kev sib piv ntawm cov hlau lead hlau thiab cov hlau tsis muaj hlau lead
Cov xim ci kuj tseem cuam tshuam ncaj qha rau qib zoo thiab cov ntsiab lus tin ntawm cov hlau nplaum. Gloss xim tsis tsuas yog cuam tshuam rau cov tsos, tab sis kuj cuam tshuam rau vuam zoo. Yog tias cov xim ci ci thiab ci ntsa iab, nws cov ntsiab lus tin yuav tsum siab, thiab cov nyhuv vuam yuav tsum zoo, txwv tsis pub cov nyhuv vuam yuav tsis zoo, thiab txawm tias xim daj lossis dawb yuav tshwm sim, uas tsis yog xim ci li qub.
Tin cov ntsiab lus yog qhov tseem ceeb tshaj plaws thiab tsuas yog cov txheej txheem rau kev txiav txim siab qib ntawm cov hlau solder. Nws kuj tseem muaj feem xyuam rau cov yam tseem ceeb xws li cov nyhuv vuam, kev ruaj khov, kev ntseeg siab, thiab kev coj ua. Thaum siv leaded solder hlau, peb yuav tsum siv cov hlau nplaum nrog cov ntsiab lus tin uas ua tau raws li cov khoom yuav tsum tau ua, txwv tsis pub cov soldering zoo yuav muaj teeb meem rau qhov sib txawv. Tus nqi ntawm cov ntsiab lus tin tsis tuaj yeem paub qhov txawv ntawm qhov muag, nws tsuas yog paub los ntawm kev sim. Kuj tseem muaj ntau hom kev tshawb nrhiav, xws li: spectroscopic detector, gravimetric method, chemical titration method, thiab lwm yam. Cov khoom siv hluav taws xob feem ntau tsis muaj cov khoom siv ntsuas no, tawm hauv qhov sib txawv loj. Peb lub tuam txhab muab cov kev pabcuam kuaj rau cov tuam txhab hluav taws xob tsis pub dawb.
Lub flux tivthaiv nyob rau hauv cov hlau lead solder kub thaum lub sij hawm soldering, tawm residue thiab pa luam yeeb tib lub sij hawm. Thaum cov pa luam yeeb tuab, tej zaum yuav muaj cov seem ntxiv. Cov residue yuav cuam tshuam cov tsos ntawm cov pob qij txha thiab feem ntau yuav tsum tau ntxuav kom daws tau. Cov pa luam yeeb yuav cuam tshuam rau lub cev thiab lub hlwb kev noj qab haus huv ntawm cov neeg ua haujlwm ua haujlwm. Yog li ntawd, thaum xaiv cov hlau lead hlau, nws cia siab tias yuav xaiv cov hlau uas tsis tshua muaj residue thiab cov pa taws.
Hauv kev tsim cov hlau nplaum, cov ntsiab lus ntawm cov flux me me yog tsim nyog los txo cov dej noo hauv, tab sis qhov chaw ntawm txoj kev no yog tias tom qab ua kom cov flux me me, nws tseem tuaj yeem muaj qhov zoo solderability, firmness, thiab lwm yam. yog lub hauv paus, vim hais tias qhov zoo ntawm cov hlau solder yog thaum kawg tshwm sim nyob rau hauv cov nyhuv vuam. Qhov qis dua cov dej noo hauv cov khoom siv rosin yuav, qhov zoo dua, thiab nws yog qhov zoo tshaj plaws uas txhua pawg ntawm rosin raw cov ntaub ntawv tsis muaj cov ntsiab lus noo noo. Rau kev khaws cia ntawm rosin thiab nkag mus ntawm noo noo tsawg li sai tau hauv cov txheej txheem flux thiab synthesis.
Txawm hais tias qhov tsos ntawm cov hlau solder tsis tuaj yeem piav qhia meej tias qhov teeb meem yog dab tsi, nws tseem yuav tsum tau hais. Cov khoom tsim los ntawm cov chaw tsim khoom tsim, muaj zog thiab muaj npe yuav tsum muaj cov qauv ntim cov qauv thiab cov lus qhia ntxaws ntxaws rau cov xov hlau no. Txwv tsis pub, cov neeg siv khoom paub qhov txawv thiab siv nws li cas? Lwm qhov tsim nyog hais txog yog qhov hnyav ntawm txhua yob. Qhov hnyav sib txawv muaj tus nqi sib txawv. Niaj hnub no lub solder hlau muaj ntau yam ntim hnyav.
