Peb Cov Khoom
Sib tsoo nplhaib rau zeb
Cov txiaj ntsig ntawm kev siv tshuab
Qhov kev tiv thaiv kev hnav ntawm cov khoom siv zeb yog qhov tseem ceeb. Feem ntau, ntau tus neeg xav tias qhov khoom nyuaj dua, qhov hnav tau ntau dua, yog li ntawd, ntau lub chaw tsim khoom tshaj tawm tias lawv cov castings muaj chromium, qhov ntau txog 30%, thiab HRC hardness ncav cuag 63-65. Txawm li cas los xij, qhov ntau dua qhov kev faib tawm, qhov ntau dua qhov muaj feem ntawm kev tsim cov qhov me me thiab cov kab nrib pleb ntawm qhov sib txuas ntawm lub matrix thiab cov carbides, thiab qhov muaj feem ntawm kev tawg kuj tseem yuav loj dua. Thiab qhov nyuaj dua qhov khoom, qhov nyuaj dua nws yog txiav. Yog li ntawd, ua lub nplhaib sib tsoo uas tiv taus kev hnav thiab ruaj khov tsis yooj yim. Lub nplhaib sib tsoo feem ntau siv ob hom khoom hauv qab no.
65Mn (65 manganese): cov khoom no tuaj yeem txhim kho qhov ruaj khov ntawm lub nplhaib sib tsoo. Nws muaj cov yam ntxwv ntawm kev tawv siab, kev tiv thaiv kev hnav zoo heev thiab kev tiv thaiv magnetism zoo, nws feem ntau yog siv rau hauv cov hmoov ua cov khoom uas xav tau tshem tawm hlau. Kev tiv thaiv kev hnav thiab kev tawv tuaj yeem txhim kho tau zoo los ntawm kev ua kom zoo thiab ua kom sov.
Mn13 (13 manganese): qhov ruaj khov ntawm lub nplhaib sib tsoo nrog Mn13 tau zoo dua piv rau 65Mn. Cov castings ntawm cov khoom no tau kho nrog dej toughness tom qab nchuav, cov castings muaj lub zog tensile siab dua, hardness, plasticity thiab cov khoom tsis yog magnetic tom qab dej hardening, ua rau lub nplhaib sib tsoo ruaj khov dua. Thaum raug kev cuam tshuam loj heev thiab muaj zog siab deformation thaum khiav, qhov chaw yuav raug ua haujlwm hardening thiab tsim martensite, yog li tsim cov txheej txheej tiv taus hnav heev, txheej sab hauv tseem muaj zog zoo heev, txawm tias nws raug hnav rau qhov chaw nyias heev, lub tshuab sib tsoo tseem tuaj yeem tiv taus cov kev co ntau dua.
