Dab tsi yog steel rails ua los ntawm?
Jan 22, 2026
A hlau railyog ib tug precision-tsim hlau beam uas ua hauj lwm raws li thawj qhov chaw rau lub log thaum kis dynamic thiab zoo li qub loads rau pw tsaug zog thiab khiav lub hauv paus. Nws cov qauv tsim ua ke nrog cov ntoo khaub lig tshwj xeeb -sectional profile nrog ua tib zoo tsim cov khoom siv hlau los tiv thaiv hnav, qaug zog, thiab deformation, ua kom ruaj khov, nyab xeeb, thiab ntev - ua haujlwm ntev rau kev tsheb ciav hlau, kev lag luam, thiab kev siv crane.
Dab tsi yog steel rails ua los ntawm?
Railway rails feem ntau yog tsim los ntawmsiab - carbon steellos yoghlau alloy, xaiv rau hardness, lub zog, thiab hnav tsis kam, feem ntau nrog ntxiv manganese, chromium, los yog vanadium, thiab nquag kho cua sov xws li quenching thiab tempering rau kev txhim kho kev ua tau zoo hauv kev xav tau. Standard rails sib npaug cov pa roj carbon (ib puag ncig 0.7%) thiab manganese, thaum cov kws tshwj xeeb siv cov hlau los yog lub taub hau- hardening rau siab - nrawm lossis hnyav - cov kab tsheb.
- U71 Mn:Manganese- alloyed carbon steel feem ntau siv rau kev lag luam thiab crane rails. Nws toughness thiab hnav tsis kam ua rau nws haum rau hnyav - lub luag haujlwm thiab cov ntawv thov hnyav hnyav.
- U75V:Siab - lub zog alloy steel tsim rau siab - ceev mainline rails, muab superior tensile lub zog, deg hardness, thiab qaug zog tsis kam rau hnyav qag loads thiab nquag tsheb.
- 50 Mn:Nruab nrab- carbon manganese steel nquag siv rau hauv mining lem thiab industrial sidings, muab qhov sib npaug ntawm hardness thiab ductility los tiv thaiv hnav thiab cuam tshuam kev puas tsuaj.
- Q235B:Cov qauv carbon steel siv nyob rau hauv cov hlua sib dua los yog cov lem ib ntus uas hnyav hnyav tsis muaj qhov tseem ceeb. Nws yog tus nqi -zoo rau qis- daim ntawv thov thauj khoom.
- R260 / R350HT:Thaum tshav kub kub- kho European thiab Asian mainline steels nrog kev qaug zog thiab kev cuam tshuam, haum rau kev ua haujlwm siab - ceev thiab thauj khoom hnyav.
| Qib | Standard / cheeb tsam | Kev sib xyaw ua ke (wt%) | Ntsiab nta & Daim ntawv thov |
| R260 | TS EN 13674-1 (Tebchaws Europe) | C: 0.67–0.80, Mn: 0.90–1.20, Si: Tsawg dua lossis sib npaug rau 0.50 | Base-qib tsheb ciav hlau; txias- dov; dav siv nyob rau nruab nrab - cov kab tsheb. Zoo weldability thiab nqi efficiency. |
| R350 HT | TS EN 13674-1 (Tebchaws Europe) | C: 0.75–0.85, Mn: 0.80–1.20, Cr: 0.20–0.50 | Kub-kho (online/offline); UTS Ntau dua lossis sib npaug rau 1100 MPa; 30-50% lub neej ntev dua R260. Txheem rau siab-ceev (TGV, ICE) thiab hnyav- cov kab tsheb thauj mus los. |
| Qib 260 | AREMA (North America) | C: ~0.77, Mn: ~1.0–1.2, Si: ~0.2 | Sib npaug rau R260; siv nrog rail seem xws li 115RE, 136RE. Feem ntau ntawm Class I freight networks. |
| Qib 350 | AREMA + Mill Specs (USA/Canada) | C: 0.78–0.83, Mn: 0.90–1.20, Cr: 0.2–0.6, + V/Nb (microalloyed) | TMCP or heat-treated; UTS ~1180–1280 MPa. For demanding curves, heavy axle loads (>33 tuj), thiab siab -tonnage txoj kev. |
| BH Rail (Bainitic) | JIS E 1101 (Nyiv), tau txais kev pom zoo hauv EU / Is Nrias teb | C: 0.65–0.80, Mn: 1.0–1.4, Cr/Mo/Ni (yeem, zeb- tshwj xeeb) | Bainitic microstructure; siab zog (UTS ~ 1250-1350 MPa) + superior puas toughness. Siv rau ntawm Shinkansen nkhaus thiab siab - hnav ntu. |
| ua 71mn | GB / T 2585 (Tuam Tshoj) | C: 0.65–0.77, Mn: 1.10–1.40, Si: 0.15–0.35 | Ua haujlwm-hardening carbon-manganese rail; Txheem rau 50kg / m, 60kg / m rails ntawm Suav mainlines. Piv rau R260 / R350 hauv kev ua haujlwm. |
| U75V | GB / T 2585 (Tuam Tshoj) | C: 0.67–0.77, Mn: 0.70–1.00, V: 0.04–0.12 | Vanadium{0}}microalloyed; siab zog & qaug zog tsis kam tshaj U71Mn. Rau siab -ceev (piv txwv li, Beijing-Shanghai HSR) thiab hnyav -cov kab. |
Hom Hlau Rail los ntawm GNEE RAIL
Raws li tus kws tshaj lij rail fastener tsum,GNEE RAILtuaj yeem muab cov qauv hlau sib txawv xws li GB, Asmeskas, BS, UIC, DIN, JIS, Australian thiab South Africa uas siv hauv kev tsheb ciav hlau, cranes thiab thee mining.
| Txuj | Sepc. | Khoom Qib Qib |
| UIC860 | UAS 54 | 700,900A,900B |
| UAS 60 | ||
| EN13674.1 | 5.00E+02 | R200, R350HT, R260Mn, R35LHT, R320Cr, R370CrHT |
| 5.40E+02 | ||
| 6.00E+02 | ||
| 6.00E+03 | ||
| IB 11-1985 | BS80A | 700,900A,900B |
| BS 90 A | ||
| BS100A | ||
| AREMA | 115 RA | SS, HH, LA, IH |
| 136 ROJ | ||
| UAS 60 | ua 71mn | |
| TIAB SA 85 | ua 71mn | |
| GB 2585-2007 | 50kg / m | ua 71mn |
| 60kg / m | U75V | |
| 75kg / m | ||
| TB/T2344-2012 | 50kg / m | U71Mn, U75V, U77MnCr |
| 60kg / m | ua 78crv | |
| 75kg / m | ||
| GB 11264-1989 | 8 kg/m | Q235 |
| 12kg / m | Q235 | |
| 15kg / m | 55Q, Q235 | |
| 18kg / m | 55Q, Q235 | |
| 22 kg / m | 55Q, Q235 | |
| 24kg / m | 55Q, Q235 | |
| 30kg / m | 55Q, Q235 | |
| 38kg / m | 50mn, ua 71 | |
| 43kg / m | 50mn, ua 71 | |
| GB Crane Rail | qw 70 | ua 71mn |
| qw 80 | ua 71mn | |
| QU 100 | ua 71mn | |
| qw 120 | ua 71mn |
Yuav ua li cas rails tsim?
Cov tsheb ciav hlau yog tsim nyob rau hauv cov nroj tsuag hnyav los ntawm cov txheej txheem ntawm steelmaking, nruam nruam rau hauv billets, cua sov, dov rau hauv txoj kev tsheb ciav hlau qhov kuv-puab, tswj cua txias, straightening, thiab precise thaum tshav kub kub kho (xws li quenching thiab tempering) kom ua tau tej yam hardness thiab toughness, ua raws li los ntawm kev txiav thiab kuaj.
- Steelmaking & Casting:Molten steel (high -carbon alloy) yog cam khwb cia rau hauv loj, semi- tiav cov duab plaub hu ua billets lossis paj.
- Cua sov:Billets yog reheated nyob rau hauv lub cub tawg kom lawv malleable rau shaping.
- Rolling:Lub pob zeb kub yog dhau los ntawm cov txheej txheem ntawm cov yob (ib lub tshuab dov) uas ua rau nws mus rau hauv cov yam ntxwv kev tsheb ciav hlau profile (lub taub hau, lub vev xaib, flange).
- Txias & Straightening:Cov ntsia hlau tau txias rau hauv kev tswj hwm, tom qab ntawd ncaj nraim los ntawm ntau- yob tshuab kom ntseeg tau tias lawv ncaj nraim thiab qhov tseeb.
- Kev kho cua sov (yeem tab sis feem ntau):Rau qhov hnyav - lub luag haujlwm rails, quenching (ceev txias) hardens lub taub hau, thaum tempering (reheating rau ib tug qis temp) txo brittleness, sib npaug hardness nrog toughness.
- Ua tiav:Rails raug txiav kom ntev ntev, thiab cov npoo yog hauv av du.
- Kev kuaj:Ultrasonic kuaj pom tseeb hauv kev ncaj ncees ua ntej cov ntsia hlau raug xa mus rau kev teeb tsa.
Txij xyoo 2008,GNEE RAILtau muab steel rails ntawm cov qib sib txawv rau ntau tshaj 18 xyoo, steel rails los ntawm GNEE yog heev recommened nyob rau hauv Tuam Tshoj thiab txawv teb chaws.Wtih txiav ntug khoom, GNEE ua tau zoo steel rails uas tau raws li cov kev cai ntawm feem ntau lub teb chaws. Standard rail, lub taub hau hardened rail, hnyav rail, lub teeb rail, crane rail thiab lwm yam yog tag nrho cov muaj nyob ntawm no, raws li ib tug ntawm cov Tuam Tshoj lub ntsiab rail tsum, GNEE RAIL tau ua hauj lwm rau muab kev lag luam ntsuab railway khoom thoob plaws lub ntiaj teb no.
