Peb Cov Khoom
Sib tsoo nplhaib rau Mill
Technical zoo
Qhov hnav tsis kam ntawm cov khoom siv zeb yog qhov tseem ceeb.Feem ntau, ntau tus neeg xav tias qhov nyuaj ntawm cov khoom, qhov hnyav dua nws yog, yog li ntawd, ntau cov foundries tshaj tawm tias lawv cov castings muaj chromium, tus nqi nce mus txog 30%, thiab HRC hardness ncav cuag 63-65.Txawm li cas los xij, qhov kev faib tawm ntau dua, qhov ntau dua qhov tshwm sim ntawm kev tsim micro-qhov thiab micro-cracks ntawm qhov sib cuam tshuam ntawm matrix thiab carbides, thiab qhov tshwm sim ntawm pob txha yuav loj dua.Thiab qhov nyuaj dua qhov khoom, qhov nyuaj nws yog txiav.Yog li ntawd, ua kom hnav-tiv taus thiab ruaj khov sib tsoo nplhaib tsis yooj yim.Lub nplhaib sib tsoo feem ntau yog siv ob hom khoom siv hauv qab no.
65Mn (65 manganese): cov khoom no tuaj yeem txhim kho lub zog ntawm lub nplhaib sib tsoo.Nws muaj cov yam ntxwv ntawm siab hardness, zoo heev hnav tsis kam thiab zoo magnetism kuj, nws yog tsuas yog siv nyob rau hauv cov hmoov ua teb qhov twg cov khoom yuav tsum tau tshem tawm hlau.Cov hnav tsis kam thiab lub toughness tuaj yeem txhim kho zoo heev los ntawm normalizing thiab tempering kub kho.
Mn13 (13 manganese): lub durability ntawm kev sib tsoo nplhaib casting nrog Mn13 tau zoo dua piv nrog 65Mn.Cov castings ntawm cov khoom no yog kho nrog dej toughness tom qab pouring, lub castings muaj zog tensile zog, hardness, plasticity thiab tsis-magnetic zog tom qab dej hardening, ua rau lub sib tsoo nplhaib ntau check.Thaum muaj kev cuam tshuam loj heev thiab muaj zog deformation thaum khiav, qhov saum npoo yuav ua hauj lwm hardening thiab daim ntawv martensite, yog li tsim ib tug heev hnav-resistant nto txheej, lub puab txheej tuav zoo heev toughness, txawm yog hais tias nws yog hnav mus rau ib tug nyias nyias, qhov sib tsoo cov menyuam tseem tuaj yeem tiv taus kev poob siab ntau dua.
