--13th. Kaum Ob Hlis Ntuj 2023--
51CrV4 Caij nplooj ntoos hlav Steel Round Bars, txoj kab uas hla 24.4mm thiab 31mm tag nrho 20Tons twb thauj khoom hauv 40ft thawv. Nws yuav dekliver los ntawm Tuam Tshoj-Europe Railway Express. (Tuam Tshoj Railway Express (Lus txhais lus: Tuam Tshoj Railway Express; CR nthuav qhia luv luv) yog hais txog lub thoob ntiaj teb railway intermodal tsheb ciav hlau uas khiav raws li tus naj npawb ntawm lub tsheb ciav hlau, txoj kev, lub sij hawm thiab tag nrho cov sij hawm taug kev, thiab kev mus los ntawm Tuam Tshoj thiab Europe thiab raws li lub teb chaws raws Txoj Kev Siv thiab Txoj Kev.)
51CrV4 yog lub caij nplooj ntoos hlav steel bar yog tsim los tsim lub zog siab quenching thiab tempering springs.
51CrV4 Caij nplooj ntoos hlav steel sib txuas cov yam ntxwv ntawm cov springs thiab muaj kev hnav zoo heev thiab cuam tshuam tsis kam. Hardened 51CrV4 / 1.8159 caij nplooj ntoos hlav steel muaj zoo heev toughness thiab cuam tshuam tsis kam, ua rau nws ib tug alloy caij nplooj ntoos hlav steel haum rau tej qhov chaw raug kev nyuaj siab, kev co, thiab tej yam.
51CrV4 (1.8159) lub caij nplooj ntoos hlav steel muaj cov khoom siv zoo thiab cov txheej txheem, muaj zog hardenability, thiab qhov sib ntxiv ntawm vanadium refines cov nplej loj ntawm cov hlau, txo cov cua sov rhiab heev, txhim kho lub zog thiab toughness, thiab muaj zog qaug zog thiab yield piv. Txawm li cas los xij, nws muaj qhov tsis zoo weldability thiab qis txias deformation plasticity.
- 51CrV4 Tshuaj muaj pes tsawg leeg
Cov pa roj carbon C: 0 47-0.55
Silicon Si: Tsawg dua lossis sib npaug rau 0.40
Manganese Mn: 0 70-1.10
Sulfur S: Tsawg dua lossis sib npaug rau 0.030
Phosphorus P: Tsawg dua lossis sib npaug rau 0.030
Chromium Cr: 0.90 ~ 1.20
Nickel Ni: Tsawg dua lossis sib npaug rau 0.35
Copper Cu: Tsawg dua lossis sib npaug rau 0.25
Vanadium V: 0 10-0.25
- Mechanical Property
Tensile zog σ B (MPa): Ntau dua lossis sib npaug rau 1274 (130)
Yield zog σ S (MPa): Ntau dua lossis sib npaug rau 1127 (115)
Elongation tus nqi δ 5 (%): Ntau dua lossis sib npaug rau 10
Kev txo qis ntawm thaj tsam ψ (%): Ntau dua lossis sib npaug rau 40
- Hardness: Kub dov, Tsawg dua los yog sib npaug rau 321HB; Kev kos duab txias + kev kho cua sov, Tsawg dua lossis sib npaug rau 321HB
- Kev kho cua sov specifications thiab metallographic qauv
Kev kho cua sov specification: quenched ntawm 850 degree ± 20 degree, roj txias; Kub ntawm 500 degree ± 50 degree (± 30 degree rau kev xav tau tshwj xeeb).
- Kev xa khoom raws li txoj cai: Kub dov steel yog xa hauv lub tshav kub kho lossis tsis kho cua sov, thaum txias rub hlau yog xa hauv lub xeev kho cua sov.
60Si2Mn thiab 51CrV4 yog ob lub caij nplooj ntoos hlav steels uas muaj cov khoom zoo sib xws.
Mechanical zog ntawm 60Si2Mn: σ S Ntau dua lossis sib npaug rau 1176Mpa, σ B Ntau dua lossis sib npaug rau 1274Mpa, δ S Ntau dua lossis sib npaug li 5%, ψ Ntau dua lossis sib npaug 25%
Mechanical zog ntawm 51CrV4: σ S Ntau tshaj los yog sib npaug rau 1175Mpa, σ B Ntau tshaj los yog sib npaug rau 1500Mpa, δ S Ntau tshaj los yog sib npaug rau 6%, ψ Ntau dua los yog sib npaug rau 40%, shear thiab torsion tso cai rau kev ntxhov siab ntau dua los yog sib npaug 1050Mpa. Lub neej qaug zog nce mus txog 3 lab lub sijhawm; Qhov kev ntxhov siab tso cai rau shear thiab torsion yog ntau dua lossis sib npaug rau 1050Mpa.
Kev ua haujlwm kub ntawm 51CrV4 tuaj yeem ncav cuag 300 degrees Celsius, thaum 60Si2Mn tsuas yog nce mus txog 250 degrees Celsius. Tsis tas li ntawd, 60Si2Mn feem ntau yog siv rau hauv kev tsim cov nplooj springs, worm coil springs, thiab springs nrog ib txoj kab uas hla ntawm 30mm los yog tsawg dua, thaum 51CrV4 feem ntau yog siv nyob rau hauv kev tsim cov springs nrog loj diameters.
* Tam sim no, Tuam Tshoj-Europe Railway Express tau npaj peb txoj kev nyob rau sab hnub poob thiab Middle East:
--West Passage. Ua ntej, nws tawm hauv lub tebchaws los ntawm Alataw Pass (Khorgos) chaw nres nkoj hauv Xinjiang, txuas nrog Lavxias Siberian railway hla Kazakhstan, thiab hla Belarus, Poland, Lub teb chaws Yelemees, thiab lwm yam rau lwm lub tebchaws nyob sab Europe. Qhov thib ob yog tawm hauv lub tebchaws los ntawm Khorgos (Alataw Pass) chaw nres nkoj thiab hla Kazakhstan, Turkmenistan, Iran, Türkiye thiab lwm lub tebchaws mus rau European lub tebchaws; Lossis hla hiav txwv Caspian hla Kazakhstan, nkag mus rau Azerbaijan, Georgia, Bulgaria thiab lwm lub tebchaws, thiab mus txog ntau lub tebchaws nyob sab Europe. Qhov thib peb yog txuas Turgat (Irkeshtan) nrog rau Tuam Tshoj txoj kev npaj Kyrgyzstan Uzbekistan railway, mus rau Kyrgyzstan, Uzbekistan, Turkmenistan, Iran, Türkiye thiab lwm lub teb chaws, thiab rau cov teb chaws Europe.
--Ntuj channel. Tawm ntawm Erenhot Chaw nres nkoj hauv Inner Mongolia, nws dhau los ntawm Mongolia thiab txuas nrog Siberian Railway hauv Russia, txuas mus rau ntau lub tebchaws nyob sab Europe.
--East Passage. Tawm ntawm Manzhouli Chaw nres nkoj hauv Inner Mongolia (Suifenhe River hauv Heilongjiang Province) thiab txuas mus rau Siberian Railway hauv Russia, nws txuas mus rau ntau lub tebchaws nyob sab Europe.*
