High carbon ferromanganese (HCFeMn) yog ib hom ferroalloy uas feem ntau siv hauv kev lag luam steel. Nws yog tsim los ntawm hlau thiab manganese, nrog cov pa roj carbon ntau li ntawm 6% mus rau 8%. HCFeMn yog tsim los ntawm kev txo cov manganese-nplua nuj ores nrog coke los yog thee nyob rau hauv ib tug hluav taws xob arc rauv.
HCFeMn muaj ob peb yam tseem ceeb uas ua rau nws muaj txiaj ntsig zoo hauv kev tsim cov hlau. Ua ntej, nws yog lub zog deoxidizer, uas txhais tau hais tias nws txo qis cov pa oxygen hauv cov hlau, txhim kho nws qhov zoo thiab ua haujlwm ntev. Qhov thib ob, nws muaj qhov siab melting point, uas txo qhov kev pheej hmoo ntawm impurities hauv cov hlau. Thaum kawg, cov ntsiab lus carbon ntawm HCFeMn muab lub zog ntxiv thiab hardness rau cov hlau.
Ntxiv rau nws siv hauv kev tsim cov hlau, HCFeMn kuj tseem siv rau hauv kev tsim khoom ntawm lwm cov hlau, nrog rau cov hlau tsis muaj steel, siab zog qis-alloy steel, thiab cov cuab yeej hlau. Nws kuj tseem siv los ua tus neeg sawv cev desulfurizing hauv kev tsim cov hlau cam khwb cia.
Txawm hais tias nws lub luag haujlwm tseem ceeb hauv kev lag luam steel, HCFeMn tuaj yeem muaj qee qhov tsis zoo yog tias siv tsis raug. Piv txwv li, ntau dhau ntawm HCFeMn tuaj yeem ua rau muaj kev nce hauv brittleness hauv cov hlau, uas tuaj yeem txo nws cov ductility thiab toughness.
Hauv kev xaus, HCFeMn yog ib qho tseem ceeb ferroalloy uas muaj ntau yam khoom muaj txiaj ntsig hauv kev tsim cov hlau. Nws lub zog, deoxidizing zog, thiab cov ntsiab lus carbon ua rau nws yog ib qho tseem ceeb ntawm ntau cov khoom steel. Txawm hais tias nws yog ib qho tseem ceeb uas yuav tsum tau siv HCFeMn hauv cov nqi tsim nyog, thiab ntev npaum li nws siv tau zoo, nws tuaj yeem muab ntau yam txiaj ntsig rau kev lag luam steel thiab ntau dua.
