Ahlau railyog ib qho khoom siv hlau tsim uas nws cov qauv siv hlau, kev ua kom zoo, thiab cov cua sov- kho lub xeev ncaj qha txiav txim siab nws qhov kev tiv thaiv rau dov kev qaug zog thiab nto plhaub. High- txoj kev ua tau zoo yuav tsum tau tswj cov txheej txheem ntau lawm kom ua tiav cov txheej txheem hardness gradients thiab txo qis hauv qhov tsis xws luag.
GNEE RAILmuab cov khoom siv rau hauv ntau qib khoom siv thoob plaws txhua tus qauv thiab txhawb nqa qhov project- cov kev xav tau tshwj xeeb nrog rau cov ntaub ntawv metallurgical, zeb traceability, thib peb- kev sib koom ua ke ntawm pawg neeg soj ntsuam, thiab kev sib tham txog kev ua haujlwm ntawm kev ua haujlwm zoo.
Dab tsi yog cov khoom ntawm rail?
Rails yog tsim los ntawm siab - carbon, kub- dov steel, tsim los rau siab zog, hardness, thiab hnav tsis kam tiv taus hnyav, rov ua dua. Cov qib feem ntau suav nrog pearlitic steels (R260) thiab tshav kub- kho, qib hwm (R350HT). Cov hlau no feem ntau alloyed nrog cov ntsiab lus xws li manganese, silicon, thiab qee zaum chromium los yog vanadium los txhim kho toughness.
Cov ntsiab lus tseem ceeb ntawm Rail Material:
- Kev sib xyaw: Cov khoom siv feem ntau yog carbon-manganese steel, uas muab qhov tsim nyog ruaj khov thiab tawv.
- Kev tsim khoom: Rails yog kub- dov thiab qee zaum cua sov- kho kom muaj zog zoo dua, nrog cov txiaj ntsig muaj zog feem ntau tshaj 60,000 PSI.
- Cov yam ntxwv: Cov khoom siv yuav tsum tiv thaiv kev puas tsuaj, tawg, thiab siab -kub deformation thaum tswj kev ua haujlwm zoo.
- Cov Qauv: Rails yog tsim raws li cov qauv thoob ntiaj teb tshwj xeeb, xws li EN 13674, uas faib ntau qib raws li lawv cov khoom siv tshuab.
Common Rail Steel Qib Ntiaj Teb:
| 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 (Baitic) | 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. |
Vim li cas rails ua los ntawm steel?
Rails yog ua los ntawm cov hlau vim nws muaj kev sib xyaw ua ke zoo tshaj plaws ntawm lub zog siab, ua haujlwm ntev, thiab kev hloov pauv uas xav tau los tiv thaiv cov khoom hnyav, siab - cuam tshuam nrawm, thiab kub hloov pauv. Steel rails muab ib qho, qis- kev sib txhuam, ntev- ntev qhov chaw uas tiv taus hnav, ua kom muaj kev nyab xeeb thiab txo tus nqi tu rau kev tsheb ciav hlau hnyav.
Cov laj thawj tseem ceeb rau kev siv hlau:
- Lub zog thiab Durability:Steel muaj zog tshwj xeeb, muaj peev xwm txhawb nqa qhov hnyav hnyav, thiab kev ntxhov siab los ntawm, hnyav thauj khoom thiab cov neeg caij tsheb ciav hlau tsis muaj kev puas tsuaj.
- Hnav Resistance:Rail steel yog tsim tshwj xeeb (feem ntau nrog manganese thiab silicon) kom tiv taus kev puas tsuaj thiab qaug zog, ncua lub neej ntawm txoj kev.
- Flexibility:Thaum muaj zog, steel hloov tau yooj yim txaus los tuav lub zog ntawm cov tsheb ciav hlau txav tsis muaj snapping, tsis zoo li cov ntaub ntawv nkig.
- Kev sib txhuam qis:Hlau- ntawm- steel tiv thaiv txo qis kev tiv thaiv, ua rau cov tsheb ciav hlau txav tau zoo thiab txo lub zog xav tau rau kev thauj mus los.
- Temperature Stability:Hlau ntsia hlau tuaj yeem tiv taus, nrog rau kev txhim kho kom zoo, qhov kub thiab txias hloov pauv, tiv thaiv deformation.
- Tus nqi -Kev ua tau zoo:Vim lawv lub neej ntev thiab kev saib xyuas tsawg kawg nkaus, steel rails yog qhov kev lag luam ntev tshaj plaws - xaiv.
Raws li tus kws tshaj lij kev tsheb nqaj hlau xa khoom, GNEE RAIL tuaj yeem muab cov qauv sib txawv steel hlau 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 | |
| 22kg / 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 |
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.