Qhov sib txawv ntawm cov kav hlau thiab cov kav hlau hlau yog cov ntsiab lus carbon.Kev lag luam metallurgical feem ntau muab faib ua ferrous metallurgical kev lag luam thiab non-ferrous metallurgical kev lag luam.Ntau ntau yam nyob rau hauv tus nqi yog ferrous metallurgy, feem ntau suav nrog hlau, npua hlau, hlau thiab ferroalloy.
Hlau thiab carbon alloys uas muaj me me ntawm alloying ntsiab thiab impurities nyob rau hauv steel yuav muab faib ua:
Pig hlau - muaj C yog 2.0 txog 4.5%
Hlau - 0.05 ~ 2.0% C
Wrought hlau - muaj C tsawg dua 0.05% Hlau yog tsim los ntawm npua hlau thiab muaj zog txhua yam thiab tawv, nrog rau cov khoom tshwj xeeb xws li kub tsis kam, corrosion kuj thiab hnav tsis kam.Hlau muaj ntau heev nyob rau hauv qhov xwm txheej, suav txog 5% ntawm cov ntsiab lus crustal, qeb plaub hauv ntiaj teb cov ntaub ntawv.Hlau yog heev nquag thiab yooj yim ua ke nrog lwm yam tshuaj.
Qhov txawv ntawm hlau thiab hlau:
Nws yog kev cai hais tias steel yog ib lo lus dav dav rau hlau thiab hlau.Muaj qhov sib txawv ntawm cov hlau thiab hlau.Lub npe hu ua hlau yog tsim los ntawm ob lub ntsiab lus, uas yog hlau thiab carbon.Feem ntau, carbon thiab elemental hlau tsim ib qho kev sib txuas, uas yog hu ua hlau-carbon alloy.Cov ntsiab lus carbon suav nrog cov khoom zoo ntawm cov hlau, thiab thaum cov ntsiab lus carbon yuav nce mus rau qhov tseeb, nws yuav ua rau muaj kev hloov pauv zoo. Cov khoom tsim los ntawm cov hlau atoms hu ua cov hlau ntshiab, thiab cov hlau ntshiab muaj cov impurities tsawg heev.Cov ntsiab lus carbon yog qhov tseem ceeb rau kev sib txawv ntawm cov hlau.Cov ntsiab lus carbon ntawm npua hlau yog ntau tshaj 2.0%;carbon cov ntsiab lus ntawm steel yog tsawg dua li ob.0%.Fe suav nrog cov ntsiab lus siab carbon, yog tawv thiab nkig, thiab tsis muaj kev ua kom zoo.Cov hlau tsis yog tsuas yog muaj peev xwm ua tau zoo, txawm li cas los xij cov khoom siv hlau sib txuas muaj cov khoom siv lub cev thiab tshuaj lom neeg zoo li lub zog siab, qhov toughness zoo, sov kub tsis kam, corrosion kuj, txheej txheem yooj yim, cuam tshuam tsis kam, thiab ncaj qha purification, kom lawv siv dav.
Post lub sij hawm: Oct-18-2022