Hom hlau twg yog rail?
Jan 20, 2026
Txoj kev tsheb ciav hlauyog ib qho tseem ceeb ntawm txoj kev tsheb ciav hlau, thiab nws txoj haujlwm yog coj lub tsheb ciav hlau lub log mus rau pem hauv ntej los ntawm kev tiv thaiv lub zog loj ntawm lub log. Steel rail yuav tsum muab du, ruaj khov thiab nruam dov nto rau lub tsheb ciav hlau dhau lub log. Nyob rau hauv hluav taws xob railway los yog tsis siv neeg thaiv seem, railway khiav kuj yuav siv tau raws li ib tug khiav Circuit Court.
Hom hlau twg yog rail?
Rail yog tsim los ntawm siab - zoo, kub- dov siab - carbon steel, feem ntau alloyed nrog manganese, chromium, los yog vanadium rau txhim khu lub zog, hardness, thiab hnav tsis kam, nrog pearlitic los yog bainitic qauv rau durability, ntsuas toughness thiab hardness rau hnyav loads thiab kev sib txhuam. Qee qhov tshwj xeeb rails undergo taub hau- hardening (induction lossis nplaim taws) rau qhov hnyav hnyav, tsim kom muaj qhov tawv tawv heev.
Cov yam ntxwv tseem ceeb & kev sib xyaw:
- Cov ntsiab lus siab carbon: Feem ntau 0.6% mus rau 0.82% carbon, ntau dua li cov hlau siv dav dav.
- Manganese (Mn): Ntxiv kom muaj zog thiab hardenability.
- Alloying Elements: Chromium (Cr) thiab Vanadium (V) feem ntau ntxiv rau lub neej qaug zog zoo dua thiab ua haujlwm rau deformation.
- Microstructure: Feem ntau pearlitic (muab zoo hnav / toughness tshuav nyiaj li cas) los yog bainitic (rau cov khoom tiv thaiv- qaug zog).
carbon steel Q235B yog dab tsi?
Q235B steel yog tus cwj pwm los ntawm qhov sib npaug ntawm lub zog thiab hloov tau yooj yim, uas tso cai rau nws los tiv thaiv kev ua haujlwm thaum tseem ua haujlwm yooj yim.
- Yield zog:Ntau dua los yog sib npaug rau 235 MPa, muab kev tiv thaiv tiv thaiv kev deformation mus tas li raws li cov khoom lag luam raug.
- Tensile zog:370-500 MPa, ua rau txoj hlua kom zam kev ntxhov siab ua ntej ua tsis tiav.
- Ductility:Qhov tsawg kawg nkaus elongation ntawm 26%, tso cai rau cov ntsia hlau kom nqus cov kev poob siab thiab khoov.
- Hardness:38–47 HB, kom ntseeg tau tias hnav tsis kam rau lub teeb rau nruab nrab - lub luag haujlwm rail systems.
| Khoom | Q235B | Chav tsev | Sau ntawv |
|---|---|---|---|
| Yield zog | Ntau dua lossis sib npaug li 235 | MPa | Resistance rau yas deformation |
| Tensile zog | 370–500 | MPa | Max load ua ntej tawg |
| Elongation | Ntau dua lossis sib npaug li 26 | % | Flexibility rau dabtsi yog khoov thiab shocks |
| Hardness | 38–47 | HB | Hnav tsis kam rau kev siv tsheb ciav hlau |
| Cov pa roj carbon | 0.12–0.22 | % | Txhim kho weldability |
| Manganese | 0.30–0.70 | % | Txhim kho toughness |
Dab tsi yog qhov zoo ntawm kev siv Q235B los tsim Lub Teeb Rail?
Siv Q235B steel rau lub teeb tsheb ciav hlau muaj qhov zoo xws li kev ua haujlwm zoo (yooj yim yob, forge, weld rau txoj kev nyuaj), zoo corrosion kuj, thiab tus nqi -effectiveness, ua rau nws zoo tagnrho rau qis dua - thauj hauv nroog thauj mus los thiab kev lag luam kab uas yooj yim thiab pheej yig yog qhov tseem ceeb, txawm tias muaj zog dua qib zoo li 55Q.
Qhov zoo ntawm Q235B rau Lub Teeb Rail:
- Kev ua haujlwm siab: Nws tau yooj yim zoo li dov, forging, thiab vuam, tso cai rau kev tsim cov khoom sib xws xws li nkhaus lem thiab tig tawm kom haum rau cov txheej txheem tshwj xeeb.
- Zoo Corrosion Resistance: Nws ua tau zoo nyob rau hauv ib txwm atmospheric tej yam kev mob, txo cov txij nkawm thiab hloov zaus.
- Kev lag luam: Nws tus nqi qis ua rau lub teeb tsheb ciav hlau pheej yig dua los tsim thiab tswj.
- Tsim nyog rau Kev Thauj Khoom qis: Q235B yog qhov zoo tshaj plaws rau cov kab tsheb ciav hlau nrog cov tsheb nruab nrab, xws li tsheb thauj mus los hauv nroog, kev tsheb ciav hlau hauv tsev, thiab txoj kev zoo nkauj, qhov twg nws ua tau raws li kev xav tau zoo.
Q235B steel tuaj yeem dov rau hauv ntau yam kev tsheb ciav hlau kom tau raws li cov qauv thoob ntiaj teb, ua kom muaj ntau yam rau kev ua haujlwm sib txawv.
| Txuj | Hom Rail | Qhov hnyav (kg / m) | Hom kev siv |
|---|---|---|---|
| GB | 22kg ua | 22.3 | Warehouse rails & lub teeb cranes |
| GB | 43kg ua | 43.0 | Me me crane lem |
| JIS | 22kg ua | 22.3 | Factory gantry cranes |
| DIN | 50kg ua | 50.0 | Medium industrial rails |
| ASTM | 60 lb | 29.7 | Lub teeb Industrial Track (NA) |
Q235B Carbon Steel piv rau lwm qib steel li cas?
Q235B muaj qhov sib npaug ntawm cov neeg kho tshuab lub zog thiab weldability uas ua rau nws zoo tagnrho rau lub teeb thiab nruab nrab cov tsheb ciav hlau:
- Nwscov pa roj carbon tsawgUa kom yooj yim ntawm vuam, sib sau, thiab kev hloov kho hauv teb.
- Piv nrog ntau dua - carbon steels, Q235B muabzoo dua ductility, txo qhov kev pheej hmoo ntawm nkig tawg nyob rau hauv crane rails los yog ib ntus kev lag luam lem.
- Nws mechanical zog yog piv rauEuropean S235JR, Nyiv SS400, thiab North American ASTM A36 steels, ua rau nws xaiv ntau yam rau cov haujlwm thoob ntiaj teb.
| Qib sib piv | Yield zog (MPa) | Tensile zog (MPa) | Hom Rail Application |
|---|---|---|---|
| Q235B | Ntau dua lossis sib npaug li 235 | 370–500 | Lub teeb / nruab nrab industrial rails |
| S235 JR | Ntau dua lossis sib npaug li 235 | 360–510 | European industrial thiab crane rails |
| TSI 400 | 245 | 400–510 | Japanese Hoobkas rails & cranes |
| ASTM A36 | 250 | 400–550 | North American warehouse & industrial rails |
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.
