Qhov sib txawv ntawm cov qauv kev tsheb nqaj hlau thiab xaiv logic
Dab tsi yog qhov tseem ceeb nyob sib txawv ntawm GB cov kev sib tw thiab American txheem ntsia hlau?
GB Txheem Kev Ntsia (piv txwv li, GB 2585) tau cais los ntawm cov tsis muaj xws li Rail Dav, nrog lub tsheb ciav hlau siab thiab cov tsheb ciav hlau muaj qhov siab ntawm 176mm. American txheem ntsia hlau (piv txwv li, arema txheem) feem ntau tau qhab nia los ntawm qhov hnyav, xws li 136RE Rail hnyav kwv yees li 67.7kg / m. Txoj hauj lwm thiab cov kab ntawm xov hauv GB cov qauv ua raws cov qauv TB, thaum American cov qauv ua raws li Arema specifications, ua rau lawv tsis {{interchableable. Asmeskas cov qauv kev sib tw feem ntau muaj cov tsheb ciav hlau me ntsis kom sib xws rau North American Heads Kev xav tau rau cov versonatility rau dog dig thiab siab} kev tsheb ciav hlau ceev. Kev cim sab nraud kuj sib txawv, nrog GB siv millimeters thiab Asmeskas tus qauv siv siv nti.
Dab tsi yog qhov sib txawv hauv cov cheeb tsam daim ntawv thov ntawm UIC tus qauv thiab JIS tus qauv hauv cov qauv kev sib tw txawv teb chaws?
UIC Txheem Rails, tsim los ntawm International Union ntawm Kev Railways, tau siv dav hauv kev hloov tsheb ciav hlau hauv Tebchaws Europe, thiab lwm yam. JIS txheem txheem rails yog cov khoom lag luam ntawm Japanese muaj cov qauv, feem ntau yog yoog rau Nyiv lub Shinkansen thiab Domestic dog railwing, xws li JIS 50N rails. UIC cov qauv qhia txog tus ntoo khaub lig - tus qauv JIS ntawm kev txhim kho kev txhim kho Nyiv cov av qeeg. Kev Repterning Europeant precitectize UIC cov qauv, thaum Nyiv thiab qee cov haujlwm East East Asian nyiam JIS cov qauv. Tseem muaj kev sib txawv me ntsis sib txawv hauv cov khoom siv cov khoom siv cov khoom siv hauv cheeb tsam.
Why do heavy-haul railways prioritize high-grade foreign standard rails?
Hnyav {{{0} haul railways (qag thauj khoom ntau dua los yog sib npaug rau 25t) ua kom muaj kev txom nyem hnyav. High -}}}}}} Arema 141re) Siv cov hlau siab qis {} alllo allloy steel nrog tensile muaj zog tshaj 880MPA. Cov kev sib tw no muaj cov txheej txheem ntau ntxiv rau ntawm kev tsheb nqaj hlau (li 15 - 20 hli), txo kev lom zem rau kev qaug zog nkees. Txawm hais tias GB tau mob siab hnyav hnyav- haul rails, qee cov kev sib tw txawv teb chaws muaj stricter suav tswj, txo qis kev pheej hmoo ntawm kev sib tw. Lub Tread Nkhaus tsim qauv ntawm cov qauv sib tw txawv teb chaws zoo dua haum hnyav {{haul freight log teeb, txo kev hnav. Lawv cov kev ua tau zoo hauv vuam tau ua rau muaj tseeb ntawm ntau txoj kab kev hnyav thoob ntiaj teb, ua kom muaj kev ntseeg siab ntau dua.
Yam khoom siv kev ua tau zoo yuav tsum tau ua qhov tseem ceeb thaum xaiv siab - Ceev rails?
High - Ceev Cov Rails Yuav Tsum Tau Txais Ntau dua lossis sib npaug nrog 880MPA (piv txwv li 60) feem ntau ncav cuag tshaj 900MPA. Tawm lub zog yuav tsum tau ua kom dhau 690MPA los tiv thaiv deformation thaum lub siab {9} kev lag luam ceev. Elongation yuav tsum muaj ntau dua los yog sib npaug rau 14% kom tsis txhob tawg tawg. Rail lub taub hau kev xav tau kev tswj hwm ntawm 280-320hb kom sib npaug hnav tsis kam thiab tawv. Tsis tas li ntawd, cov khoom siv purity yog qhov tseem ceeb, nrog cov sulfur thiab phosphor cov ntsiab lus hauv qab no 0.025% thiab 0.035% feem xyuam rau sab hauv.
Dab tsi yog qhov sib thooj ntawm kev xaiv hom thiab tsim kev khiav ceev?
Rau kev sib tw ib txwm nrog kev siv ceev dua lossis sib npaug nrog 120km / m, 50 GB Rail tau lees paub, vim lawv lub zog tsim nyog rau cov khoom siv. Txog kev tsheb ciav hlau ceev (160 {{{{}} 200km / h), kho dua tshiab rau 60kg / m gb clail / m kev sib tw txawv teb chaws yog tsim nyog los txhim kho kev ruaj khov. High - Kev Co Kev Railways (Ntau dua li 250km / h) Yuav tsum siv Gban Txuj Ci Kub txog 0.1mm. Tsis hais txog kev ceev, hnyav-tsheb ciav hlau yuav tsum muaj cov nqaj hlau hnyav ntawm 75kg / m lossis siab dua, xws li Asmeskas tus qauv 155RE. Siab dua qhov kev thov rov qab stricter Ncaj Ncaj Ncees Qiv zog, feem ntau tsawg dua lossis sib npaug nrog 0.3mm / m.