12CrMoG yog ib hom 0.5 feem pua Cr-0.5 feem pua Mo low alloy kub steel, los ntawm Cr los txhim kho cov oxidation tsis kam ntawm hlau thiab kub lub zog, Mo tuaj yeem txhim kho qhov kub ntawm cov hlau. stability thiab lub zog. Cov hlau ntawm 480 degree ~ 540 degree nyob rau hauv cov xwm txheej ntawm lub zog thermal txaus thiab kev ntseeg tau ntawm kev ua haujlwm, kev ua haujlwm mus sij hawm ntev tseem tuaj yeem tswj hwm kev ruaj ntseg ntawm lub koom haum thiab muaj zog txaus. Cov hlau tsis muaj kev nyiam rau graphitize, los yog nws kub brittleness, zoo processability thiab weldability, thiab muaj ib tug siab tsis kam mus slack.
15CrMoG yog dav siv nyob rau hauv lub ntiaj teb no ntawm pearlitic chrome molybdenum tshav kub-resistant steel, nrog rau cov txheej txheem zoo, vuam kev ua tau zoo thiab kub lub zog, sib npaug rau Tebchaws Meskas T11, T12 thiab P11, P12, Nyiv STBA21, STBA22, STBA23. Cov hlau nyob rau hauv 500 ~ 550 degree nyob rau hauv lub sij hawm ntev kev lag luam yam tsis muaj graphitization nyiam, tab sis yuav muaj pearlitic spheroidization, alloying ntsiab lus los ntawm ferrite mus rau carbide tsiv teb tsaws thiab carbide hom ntawm qhov tshwm sim ntawm kev hloov, ua rau high-temperature steel kev ua tau zoo txo.
12Cr1MoVG belongs rau pearlite tsawg alloy kub hlau. Piv nrog 15CrMoG, ib qho me me ntawm V tau ntxiv rau cov hlau. Lub hom phiaj yog txhawm rau txhim kho kev ruaj ntseg thiab thermal zog ntawm cov hlau thaum cov hlau xa mus rau cov carbide ntev thaum cov hlau siv rau qhov kub thiab txias. Cov hlau yog tsuas yog siv rau kev tsim cov phab ntsa kub tsis tshaj 570 degree cua sov nto, phab ntsa kub tsawg dua los yog sib npaug li 550 degree ntawm header, chav kav thiab forgings loj.
12Cr2MoWVTiB (steel 102) yog cov pa roj carbon tsawg, tsawg-alloy bainite-hom cua sov-strengthened steel, mas Mo, W composite solid solution reinforcing, V, Ti composite dispersion strengthening thiab micro B strengthening. Lub luag hauj lwm ntawm B yog manifested nyob rau hauv ob yam, ntawm ib sab tuaj yeem ntxiv dag zog rau cov ciam teb, ntawm qhov tod tes, tuaj yeem npaj ferrite transformation kom tau txais ib qho qauv bainite. Cov hlau tsuas yog siv rau phab ntsa kub tsawg dua lossis sib npaug li 600 degree siab siab boiler superheater, reheater thiab lwm yam kub kub. 12Cr3MoVSiTiB (п11) kuj yog cov pa roj carbon tsawg, tsis tshua muaj alloy bainite hom cua sov hlau. Piv nrog rau 12Cr2MoWVTiB, cov hlau muaj ntau dua antioxidant zog, tab sis lub zog kav ntev tsis zoo li qub. Cov hlau tsuas yog siv rau kev tsim cov phab ntsa kub tsawg dua lossis sib npaug li 600 degree ultra-siab siab thiab subcritical boiler superheater thiab reheater.