Taw qhia txog cov cua sov Alloys
Thaum xaiv cov khoom siv rau cua sov, ob lub alloys nquag tuaj rau hauv kev xav:Nichrome(Nickel-Chromium) thiabFeCrAl(Iron-Chromium-Aluminium). Thaum ob qho tib si ua haujlwm zoo sib xws hauv cov ntawv thov cua sov, lawv muaj cov yam ntxwv sib txawv uas ua rau lawv haum rau ntau qhov chaw thiab kev siv. Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau kev xaiv cov khoom tsim nyog rau koj cov kev xav tau tshwj xeeb.
1.Composition thiab Basic Properties
Nichrome yog nickel-chromium alloy feem ntau muaj 80% npib tsib xee thiab 20% chromium, txawm tias muaj lwm qhov sib piv. Qhov kev sib xyaw ua ke no muab kev ua haujlwm zoo rau oxidation thiab tswj lub zog ntawm qhov kub thiab txias. Nichrome alloys paub txog lawv cov formability thiab kev ua haujlwm zoo ib yam thoob plaws qhov kub thiab txias.
FeCrAl alloys, raws li lub npe qhia, feem ntau yog tsim los ntawm hlau (Fe) nrog qhov tseem ceeb ntxiv ntawm chromium (Cr) thiab txhuas (Al). Ib qho kev sib xyaw ua ke yuav yog 72% hlau, 22% chromium, thiab 6% txhuas. Cov ntsiab lus ntawm aluminium tshwj xeeb yog txhim kho cov alloy qhov kub thiab txias ua haujlwm thiab oxidation tsis kam.
2.Kev ua haujlwm kub
Ib qho ntawm qhov sib txawv tseem ceeb tshaj plaws nyob rau hauv lawv qhov siab tshaj plaws ua haujlwm kub:
- Nichrome feem ntau ua haujlwm txog li 1200 ° C (2192 ° F)
- FeCrAl tuaj yeem tiv taus kub txog 1400 ° C (2552 ° F)
Qhov no ua rau FeCrAl zoo tshaj plaws rau cov ntawv thov uas xav tau cua sov, xws li cov chaw ua khoom siv hluav taws xob lossis cov khoom siv hauv chav ntsuas kub.
3.Oxidation Resistance
Ob lub alloys tsim cov txheej txheem tiv thaiv oxide, tab sis los ntawm cov txheej txheem sib txawv:
- Nichrome tsim ib txheej chromium oxide
- FeCrAl tsim txheej txheej aluminium oxide (alumina)
Cov txheej alumina hauv FeCrAl yog qhov ruaj khov ntawm qhov kub thiab txias, muab kev tiv thaiv ntev ntev tiv thaiv oxidation thiab corrosion. Qhov no ua rau FeCrAl tshwj xeeb tshaj yog muaj txiaj ntsig hauv ib puag ncig uas muaj peev xwm corrosive.
4.Electrical Resistivity
Nichrome feem ntau muaj hluav taws xob ntau dua li FeCrAl, uas txhais tau tias:
- Nichrome tuaj yeem tsim hluav taws xob ntau dua nrog tib tus nqi tam sim no
- FeCrAl tej zaum yuav xav tau tam sim no me ntsis ntxiv rau cov cua sov sib npaug
Txawm li cas los xij, FeCrAl qhov kev tiv thaiv tau nce ntxiv nrog qhov kub thiab txias, uas tuaj yeem ua tau zoo rau qee yam kev siv tswj.
5.Mechanical Properties thiab Formability
Nichrome feem ntau yog cov khoom siv ntau dua thiab yooj yim rau kev ua haujlwm nrog rau hauv chav tsev kub, ua rau nws zoo dua rau cov ntawv thov uas xav tau cov duab nyuaj lossis khoov nruj. FeCrAl ua ntau dua thaum cua sov, uas tuaj yeem ua tau zoo thaum lub sijhawm tsim khoom tab sis yuav xav tau tshwj xeeb tuav ntawm chav tsev kub.
6.Cov nqi txiav txim siab
FeCrAl alloys feem ntau raug nqi tsawg dua Nichrome vim tias lawv hloov kimnpib tsib xeenrog hlau. Qhov zoo dua tus nqi no, ua ke nrog kev ua tau zoo ntawm qhov kub thiab txias, ua rau FeCrAl qhov kev xaiv zoo nkauj rau ntau daim ntawv thov kev lag luam.
Vim li cas thiaj xaiv peb cov khoom FeCrAl?
Peb cov khoom cua sov FeCrAl muab:
- Kev ua tau zoo ntawm qhov kub thiab txias (txog 1400 ° C)
- Zoo heev oxidation thiab corrosion kuj
- Lub neej ua haujlwm ntev dua hauv cov xwm txheej hnyav
- Nqi-zoo lwm txoj rau nickel-based alloys
- Customizable daws teeb meem rau koj daim ntawv thov tshwj xeeb xav tau
Txawm hais tias koj tab tom tsim cov khoom siv hluav taws xob, cua sov, lossis cov cuab yeej tshwj xeeb, peb cov khoom FeCrAl muab cov kav ntev thiab kev ua tau zoo rau qhov xav tau ib puag ncig.Tiv tauj pebhnub no los tham txog yuav ua li cas peb cov kev daws teeb meem FeCrAl tuaj yeem ua tau raws li koj cov kev xav tau cua sov thaum ua kom zoo rau koj cov nqi ua haujlwm.
Post lub sij hawm: Apr-09-2025