Ua haujlwm cov txheej txheem ntawm tshav kub-resistant hlau

Tus txheej txheem ua hauj lwm ntawm cov hlau kub-resistant steel feem ntau yog koom nrog lub luag haujlwm ntawm alloy cov ntsiab thiab kev ua tau zoo ntawm cov khoom kub siab. ‌

Lub luag haujlwm ntawm cov ntsiab lus alloy
Thaum tshav kub kub-resistant steel txhim kho nws qhov kev ua tau zoo ntawm kev kub siab los ntawm kev ntxiv cov khoom siv rau cov hlau. Feem ntau siv alloying cov ntsiab lus suav nrog chromium (Molybdenum (mo), tungsten (v), titanium (nb). Cov ntsiab no cuam tshuam rau kev ua tau zoo ntawm cov hlau hauv cov kev hauv qab no:

Chromium (CR): chromium yog ib qho tseem ceeb tshaj plaws alloying cov ntsiab lus hauv tshav kub-resistant steel. Thaum cov ntsiab lus chromium ncav cuag kwv yees li 12%, lub corrosion tsis kam ntawm cov hlau hauv oxidizing media yuav ua rau muaj kev txhim kho. Chromium reacts nrog oxygen los ua ib qho quav chromium oxide (cr₂o₃) txheej los tiv thaiv cov oxidation txuas ntxiv. Molybdenum (mo): Molybdenum tuaj yeem txhim kho lub zog kub thiab kub ua haujlwm ntawm cov hlau ua hluav taws xob ua haujlwm hauv cov dej kub siab. Tungsten (w): tungsten tuaj yeem txhim kho lub zog kub thiab thermal ruaj khov ntawm cov hlau, thiab feem ntau siv los tsim cov khoom ua haujlwm ntawm qhov chaw kub. Vanadium (v) thiab titanium (ti): cov khoom siv no los ntawm kev sib sau ua ke los ntawm kev sib sau ua ke ntawm matrix, thiab txuas ntxiv txhim kho lub zog kub siab ntawm cov hlau.
Kev ua tau zoo ntawm qhov kub
Cov khoom tseem ceeb ntawm cov hlau kub-resistant hlau ntawm qhov kub kub muaj xws li:

Oxidation tsis kam: cov alloying cov khoom hnov ​​nrog oxygen los ua ib txheej xim dense oxide los tiv thaiv cov oxidation txuas ntxiv.
Kev kub siab kub lub zog: cov ntsiab lus txhawb nqa tau ntxiv dag zog rau cov qauv sib dhos thiab kev txhim kho lub zog thiab ruaj khov ntawm cov hlau thaum kub siab.
Corrosion Kuj: qee cov xim kub-resistant steels kuj muaj cov zoo corrosion tsis kam thiab muaj peev xwm tswj tau ruaj khov ua tau nyob rau hauv cov kub thiab cov tub ceev xwm.
Cov Ntawv Thov Tshwj Xeeb
Cov xim kub-resistant steels yog dav siv nyob rau hauv ntau yam cuab yeej thiab seem nyob rau hauv ib puag ncig kub, xws li:

Boilers thiab cov hlab ntsha siab: siv los tsim cov rwj thiab siab, uas tuaj yeem ua haujlwm stably rau lub sijhawm ntev thiab siab siab.
Chav turbines thiab lub zog machinery: siv los tsim cov khoom siv ntawm cov khoom siv hluav taws xob thiab lub zog siv hluav taws xob kom txhim kho qhov kub thiab txias thiab kev ntseeg tau ntawm cov khoom siv.
Muaj cov tshuab ua kom sov thiab cov khoom siv tshuaj lom neeg: siv los tsim cov chaw ua kom sov thiab cov khoom siv tshuaj lom neeg, muaj peev xwm nyob ruaj khov hauv cov xov xwm kub thiab corrosive.