Cov ntaub ntawv feem ntau siv rau 75kg GB GB hnyav ntsia hlau yog tsuas yog U75V hlau thiab U78CRV hlau. Cov hauv qab no yog cov lus qhia ntxaws ntxaws rau lawv:
U75V Hlau
Kev sib xyaw cov yam ntxwv:Ntxiv rau cov ntsiab lus tseem ceeb xws li carbon thiab manganese, {}}. 04% {2}}. 12% vagadium ntxiv. Vanadium yog lub cev muaj zog carbide-tsim cov khoom uas tuaj yeem ua tau zoo, thiab txhim kho cov carbides thiab txhim kho lub zog thiab hardness ntawm cov hlau.
Qhov Zoo:Piv nrog U71MN Hlau, U75V Hlau muaj lub zog siab dua thiab hnav zoo dua. Nws cov qauv muaj ntau dua cov kev ua kom zoo dua, nws tuaj yeem ua tau zoo dua hnav thiab deformation, thiab nws cov qaug zog kuj zoo dua.
Daim Ntawv Thov Qhia:Feem ntau siv nyob rau hauv tibneeg hu tauj coob lub cev railways, xws li cov kab tsheb ciav hlau hnyav xws li cov hlua tsheb thauj khoom thiab ore, uas tuaj yeem txo cov nqi tsheb ciav hlau thiab cov nqi kho kom txo cov kab.
U78CRV Hlau
Kev sib xyaw cov yam ntxwv:Cov ntsiab lus carbon yog nruab nrab ntawm {{{0}}. 40% {{{-0. 12%. Pa roj carbon ntau zog zog thiab hardness, chromium txhim kho corrosion tsis kam, oxidation txhim kho lub zog thiab nkees ua kom dhau los ntawm kev sim dag zog.
Qhov Zoo:Nws yog cov khoom siv tsheb ciav hlau siab ntawm cov khoom siv hluav taws xob tsawg kawg ntawm lub zog ntawm 1080MPA thiab saum toj no. Nws muaj cov coj zoo heev, nkees ua hauj lwm thiab corrosion tsis kam, thiab muaj peev xwm zoo dua hnav thiab deformation.
Daim Ntawv Thov Qhia:Nws yog feem ntau siv hauv kev sib tw ntawm kev sib tw hnyav, xws li Daqin hnyav-kab kev tsheb ciav hlau kab ke nrog cov kev tsheb ciav hlau loj thiab nkees ua yeeb yam. Nws tuaj yeem tiv thaiv loj hauv tsheb ciav hlau loj, txo cov zaus ntawm kev hloov tsheb ciav hlau, thiab txo tus nqi txij nkawm.
Lub 75kg / m hnyav rails siv nyob rau hauv lub DAQIN kab yog ua los ntawm U78CRV, U75V, U95cr, U22Simn, U20mn, thiab lwm yam. Ntawm lawv:
U78CR cov khoom siv:Nrog nws cov kev ua tau zoo thiab kev lag luam, nws tau dhau los ua cov tsheb ciav hlau uas nyiam rau Daqin hnyav-kev tsheb ciav hlau txoj kab. Nws muaj lub zog siab, nkees tsis kam thiab hnav tsis kam, kev tsheb ciav hlau zoo thiab yog tsim nyog rau ntu kev dav dav ntawm cov kab seem.
U75V Khoom Siv:Nws yog dav siv nyob rau hauv daqin hnyav-cov kab kev tsheb ciav hlau hnyav. Nrog rau kev sib ntxiv ntawm micro-alloying keeb kwm vanadium, nws muaj qhov cuam tshuam zoo dua ntawm cov kab ncaj ntawm cov kab tub rog uas tsis muaj haujlwm thiab hnyav kev tsheb nqaj hlau. Nyob rau hauv tus kab khiav hauv cheeb tsam, nws tuaj yeem ua tau raws li kev siv ntawm cov kev ua haujlwm hauv kev ua haujlwm ntau yam xws li nquag hloov pauv thiab tig mus, thiab muaj kev ruaj khov zoo thiab hnav tsis kam.
