Hauv Tuam Tshoj metallurgical mines (xws li hlau ee, tooj nkab ore, cov txhuas-zinc ore, thiab lwm yam), ntub dejpob zeb tshuabFeem ntau yog ua los ntawm cov hlau siab zoo nkauj, thaum muaj qee cov lag luam siv cov ntaub ntawv chromium-high manganese-siab manganese steel pawg. Cov pob zeb ntub dej zeb cov ntaub pua rooj ua ntsej muag ua rau siv, xav kom tiv taus corrosion, cuam tshuam, thiab hnav. High manganese steel hnab tau paub zoo rau lawv cov kev sib txawv zoo heev thiab ua tsis zoo tab sis corrosion tsis kam thiab corrosion tiv taus.
Txhawm rau hloov kho cov kev ua haujlwm dhau los ntawm kev lag luam min Qhov no tau ua tiav txoj kev sib tsoo ntawm cov hlau ore thiab nce cov kev pabcuam lub neej ntawm lubpob zeb tshuablos ntawm ntau dua ob zaug uas ntawm cov siab zoo tib yam mansane steel pawg.
Hais txog cov ntsiab lus carbon cov ntsiab lus ntawm cov paib lub zog thiab elongation ntawm manganese steel muaj zog, cov kev coj ua ntawm cov hlau siab steele kuj txhim kho. Txawm li cas los xij, yog cov ntsiab lus carbon ntau dua li 1.4%, tsis muaj zog ntawm cov hlau, uas yog vim li cas Steel nrog cov ntsiab lus carbon ntau dua qib no yog tsis tshua muaj siv.
Ntxiv mus, cov nyhuv ntawm cov ntsiab lus carbon ntawm hnav tsis kam ntawm manganese steel casings kuj tseem pom tau. Cov ntaub ntawv muaj cov pa roj carbon qis (tsawg kawg 0. 7% c). Ntawm qhov tod tes, lub luag haujlwm ntawm manganese raws li ib tug unustenite stabilizer tsis tuaj yeem tsis quav ntsej. Ntau dhau manganese cov ntsiab lus yuav ruaj khov rau theem Austenite hauv cov hlau ntawm chav tsev kub. Austenite muaj ib tus qauv FCC, uas ua rau muaj zog kom tsawg dua thaum cov ntsiab lus manganese siab dhau.
Qhov sib ntxiv ntawm chromium tuaj yeem txhim kho lub hardness thiab corrosion tsis kam ntawm cov hlau. Raws li tus neeg saib xyuas carbide-tsim, ntau dhau ntawm chromium ntau dhau yuav ua rau cov nag lossis daus ntawm carbides ntawm cov ciaj ciam teb ntawm cov ciaj ciam. Kev tshawb fawb qhia tau hais tias kom txo cov feem ntawm carbides thiab tswj hwm cov ntsiab lus chromium yuav tsum tau txwv rau {1%. 1%. Ib qho ntxiv, cov carbides no tuaj yeem raug tshem tawm los ntawm kev kho mob hauv qhov ntsuas kub ntawm 1050 degree rau 1100 degree. Yog tias Carbides yog tam sim no nyob rau hauv lub quenched qauv, lawv yuav tsum ua kom pom zoo li cov nplej tsis muaj kev phom sij, ntau dua li cov kab txuas ntxiv ntawm cov ciaj ciam. Tom qab xws li kev kho mob no, cov txiaj ntsig zoo yuav nce ntxiv, tab sis kev cuam tshuam lub zog yuav txo me ntsis.
