Puas yog soldering hlau lom?
Ib tug netizen ci uas nws tau soldering nrog hluav taws xob soldering hlau nyob rau hauv lub Hoobkas PCB rau ib xyoos, thiab nws tsis xis nyob. Nws lub plab me ntsis o. Puas yog soldering lom? Nws puas yuav ua rau muaj kab mob lead.
Qhov tseeb, nws nyob ntawm seb cov hlau lead hlau siv rau kev siv hluav taws xob siv hluav taws xob ntawm kev ua haujlwm tsis muaj txhuas los yog tsis, thiab yuav tsum tau kuaj ntshav cov hlau lead. Yog tias tsis muaj ntau dhau, yuav tsis muaj teeb meem txhua. Puas yog soldering lom?
Nquag, yog tias kev tiv thaiv thiab cov khoom siv raw khoom tau ua raws li lub teb chaws tus qauv, soldering yuav tsis ua rau muaj teeb meem loj. Niaj hnub no, cov khoom tsis muaj hlau lead feem ntau yog siv.
Lead yog cov tshuaj lom neeg, thiab kev nqus ntau dhau los ntawm tib neeg lub cev tuaj yeem ua rau muaj kab mob lom. Kev noj tshuaj tsawg tsawg yuav muaj feem cuam tshuam rau tib neeg txoj kev txawj ntse, lub paj hlwb, thiab kev ua me nyuam.
Cov hlau nplaum thiab cov hlau lead yog cov khoom siv feem ntau siv, uas muaj cov hlau zoo conductivity thiab qis melting point, yog li nws tau siv rau hauv cov txheej txheem vuam rau lub sijhawm ntev. Nws toxicity feem ntau yog los ntawm txhuas. Cov pa luam yeeb txhuas uas tsim los ntawm soldering tuaj yeem yooj yim ua rau muaj tshuaj lom lom.
Cov hlau lead tuaj yeem tsim cov khoom siv lead ua, tag nrho cov no tau muab cais ua cov khoom phom sij. Lead nyob rau hauv tib neeg lub cev tuaj yeem cuam tshuam rau lub hauv nruab nrab lub paj hlwb thiab lub raum.
Ib puag ncig toxicity ntawm txhuas rau qee yam kab mob tau pom dav dav. Cov ntshav lead concentration siab tshaj 10 μ g / dl tuaj yeem tsim cov teebmeem biochemical rhiab heev, thiab qhov ntev ntev ntawm cov hlau lead ntau tshaj 60-70 μ g / dl tuaj yeem ua rau tshuaj lom tshuaj lom neeg.
Cov hmoov txhuas yog cov tshuaj lom, cia nyob ib leeg seb puas muaj kev cuam tshuam loj rau lub cev. Txawm tias cov hlau zoo tib yam tuaj yeem raug tshuaj lom yog tias muaj ntau dhau. Thaum soldering, cov pa luam yeeb yuav tshwm sim, uas muaj cov khoom tsim kev puas tsuaj rau lub cev.
Thaum ua haujlwm, nws yog qhov zoo tshaj los hnav lub npog ntsej muag, tab sis nws tseem yuav muaj qee qhov cuam tshuam rau qee qhov. Tau kawg, yog tias cov hlau tsis muaj hlau lead tuaj yeem siv tau, nws yuav muaj kev nyab xeeb ntau dua li cov hlau lead.
