1. Yuav ua li cas Conductivity ntawm ntshiab tooj liab hloov nrog kub
Cov hluav taws xob conductivity ntawm cov tooj liab ntshiab yog rhiab heev rau qhov kub thiab txias. Thaum kub nce, thermal zog ntawm tooj liab atoms intensifies, uas tsub kom tawg ntawm dawb electrons thiab thiaj li yuav txo conductivity.
Nyob rau hauv chav tsev kub (20 degree), ntshiab tooj liab muaj heev conductivity.
Thaum kub nce, conductivity txo yuav luag linearly.
Thaum kub poob, conductivity nce ho.
Qhov kub coefficient ntawm tsis kam rau cov tooj liab ntshiab yog kwv yees li 0.00393 ib degree. Qhov no txhais tau hais tias rau txhua txhua 1℃nce nyob rau hauv qhov kub thiab txias, qhov kev tiv thaiv ntawm tooj liab nce li ntawm 0.393%, thiab conductivity txo raws li.
Ntawm qhov kub tsis tshua muaj siab, xws li nyob rau hauv ib puag ncig cryogenic, ntshiab tooj liab qhia ze li ntawm superconducting-zoo li conductivity. Nyob rau hauv siab - qhov kub thiab txias nyob ze rau nws qhov melting point, conductivity poob mus rau ib qho qis heev. Qhov kev sib raug zoo tsis zoo ntawm qhov kub thiab txias yog qhov tseem ceeb hauv kev tsim hluav taws xob, tshwj xeeb tshaj yog rau siab -tam sim no cables, transformers, thiab hluav taws xob tiv tauj uas tsim hluav taws xob thaum ua haujlwm.
2. Conductivity thiab Resistivity ntawm ntshiab tooj liab
Ntawm 20 degree, tus qauv hluav taws xob cov khoom ntawm cov tooj liab ntshiab yog txhais raws li hauv qab no:
Hluav taws xob tiv taus: 1.7241 × 10⁻⁸ Ω·m
Qhov no yog tus qauv lees paub thoob ntiaj teb rau siab -purity tooj liab.
Hluav taws xob conductivity: Kwv yees li 58.0 MS / m (megasiemens ib meter)
IACS conductivity: 100% IACS
IACS (International Annealed Copper Standard) yog qhov chaw tshaj plaws rau kev qhia txog kev coj ua hauv kev lag luam hlau. Los ntawm kev txhais, tus qauv tag nrho annealed ntshiab tooj liab sib npaug 100% IACS. Tus nqi no yog siv rau tag nrho lwm yam khoom siv hluav taws xob. Piv txwv li, txhuas yog li 61-62% IACS, thaum tooj dag tsuas yog 20-30% IACS.
Cov txiaj ntsig no siv rau siab -purity tooj liab nrog purity siab dua 99.95%. Txawm tias me me ntawm impurities yuav txo qis conductivity thiab ua kom muaj zog.
3. Kev sib txawv ntawm cov khoom siv tooj liab sib txawv
Muaj ntau ntau qib ntawm cov tooj liab ntshiab, thiab lawv qhov sib txawv ntawm cov conductivity yog me me tab sis pom tau zoo hauv cov ntawv thov precision.
Electrolytic Tough Pitch Copper (ETP Cu, C11000)
Feem ntau siv, purity txog 99.90% Conductivity: 97% -100% IACS
Siv rau hauv cables, busbars, motors, thiab cov khoom siv hluav taws xob.
Oxygen-Ntshav tooj liab (OFC / C10100)
Purity siab tshaj 99.99%, cov ntsiab lus oxygen tsawg heev.Conductivity: 100% -101.5% IACS
Me ntsis siab dua ETP tooj liab, siv nyob rau hauv siab - cov khoom siv zaus, lub tshuab nqus tsev hluav taws xob, thiab cov khoom siv hluav taws xob.
Phosphorus Deoxidized Copper (DHP Cu, C12200)
Deoxidized nrog phosphorus, zoo rau vuam thiab brazing.Conductivity: 85% -90% IACS
Tsawg dua ETP thiab cov pa oxygen- tooj liab dawb vim yog cov ntsiab lus phosphorus, feem ntau yog siv hauv cov kav dej, cov khoom siv hluav taws xob, thiab cov kav dej hauv kav dej ntau dua li cov khoom siv hluav taws xob ua tau zoo.
Hauv cov ntsiab lus:
Oxygen- tooj liab dawb muaj qhov ua tau zoo tshaj plaws.
ETP tooj liab yog ze rau 100% IACS thiab tus nqi - zoo.
Phosphorus-deoxidized tooj liab tau pom tseeb qis qis dua tab sis ua tau zoo dua.
Rau kev siv hluav taws xob thiab hluav taws xob, ETP tooj liab txaus. Tsuas yog nyob rau hauv siab -precision, siab- zaus, lossis ultra- qis- qhov kub thiab txias ib puag ncig yog oxygen- dawb tooj liab tsim nyog.
