Puas yog soldering hlau puas tsuaj rau lub cev?
Qee cov neeg netizens yws tias nws tau siv hluav taws xob soldering hlau los ua haujlwm hauv lub Hoobkas PCB rau ib xyoos, thiab nws pib tsis xis nyob thiab nws lub plab me ntsis. Puas yog solder lom? Nws puas tuaj yeem ua rau lom lom?
Qhov tseeb, qhov no yog nyob ntawm seb cov hlau soldering ntawm qhov chaw ua haujlwm yog coj los yog tsis muaj hlau lead, thiab cov ntshav txhuas yuav tsum tau kuaj xyuas tsis tu ncua. Yog tias nws tsis dhau tus qauv, yuav tsis muaj teeb meem dab tsi. Puas yog lub solder lom?
Feem ntau, yog tias kev tiv thaiv thiab cov khoom siv raw khoom tau ua raws li lub teb chaws tus qauv, kev sib tsoo yuav tsis ua rau muaj kev phom sij loj. Niaj hnub no, yuav luag tag nrho cov khoom tsis muaj hlau lead yog siv.
Lead yog ib qho tshuaj lom. Kev nqus dej ntau dhau los ntawm tib neeg lub cev tuaj yeem ua rau muaj kab mob lead lom. Kev noj cov koob tshuaj tsawg tsawg tuaj yeem cuam tshuam rau tib neeg kev txawj ntse, lub paj hlwb thiab lub cev xeeb tub.
Lub alloy ntawm tin thiab lead yog feem ntau siv solder. Nws muaj cov hluav taws xob zoo conductivity thiab cov ntsiab lus melting tsawg. Yog li ntawd, nws tau siv nyob rau hauv vuam txheej txheem rau lub sij hawm ntev. Nws toxicity feem ntau yog los ntawm txhuas. Cov fume uas ua los ntawm soldering tuaj yeem yooj yim ua rau muaj tshuaj lom.
Cov hlau lead tuaj yeem tsim cov khoom siv lead ua, tag nrho cov no tau muab cais ua cov khoom phom sij. Hauv tib neeg lub cev, cov hlau lead tuaj yeem cuam tshuam rau hauv nruab nrab lub paj hlwb thiab lub raum.
Ib puag ncig toxicity ntawm txhuas rau qee yam kab mob tau raug sau tseg. Cov ntshav lead concentration ntau dua 10 ug / dl yuav ua rau muaj kev cuam tshuam biochemical. Yog tias qhov tshwm sim ntev ntev ua rau cov ntshav lead concentration siab tshaj 60 ~ 70 ug / dl, qhov tshuaj lom tshuaj txhuas yuav tshwm sim.
Txhua yam uas muaj cov hmoov txhuas yog cov tshuaj lom. Cia peb tsis txhob tham txog seb puas muaj kev cuam tshuam loj rau lub cev. Txawm tias cov hlau zoo tib yam tuaj yeem ua rau lom yog tias muaj ntau dhau. Thaum soldering, yuav muaj cov pa luam yeeb, uas muaj cov khoom uas muaj kev phom sij rau lub cev.
Nws yog qhov zoo tshaj plaws hnav lub npog ntsej muag thaum ua haujlwm, tab sis nws tseem yuav muaj qee yam cuam tshuam. Tau kawg, yog tias koj tuaj yeem siv cov hlau tsis muaj hlau lead, nws yuav muaj kev nyab xeeb ntau dua li cov hlau lead-raws li cov hlau.
