Dab tsi yog qhov hardness ntawm txoj kev tsheb ciav hlau?
Jan 21, 2026
Hlau rail(tseem hu ua railroad rails, railway rails, los yog crane rails) yog cov khoom tseem ceeb ntawm cov kab ke, pab coj lub log thiab faib cov khoom hnyav nrog qhov tseeb. Tsim nyob rau hauv qhov optimized I-beam cross-section uas suav nrog lub taub hau tsheb ciav hlau (sib cuag saum npoo), lub vev xaib (kev txhawb nqa ntsug), thiab puag (stabilizing flange), cov ntsia hlau no xa cov kev khoov zoo tshaj plaws thiab kev ruaj ntseg zoo.
- Kev taw qhia: Precisely coj lub log ntawm dov Tshuag raws txoj kev.
- Load-Cov kabmob: Tiv thaiv lub zog loj heev uas tsim los ntawm cov tsheb ciav hlau hla thiab faib cov khoom no rau cov neeg pw tsaug zog los ntawm kev sib kis ntawm lub zog.
- Kev Ua Haujlwm Kev Ua Haujlwm: Ua kom muaj qhov chaw ruaj khov ntawm qhov chaw dov nrog cov kev tsheb ciav hlau txuas ntxiv mus, txo qhov kev sib tw ua haujlwm kom ntseeg tau tias lub zog - lub tsheb ciav hlau txav tau zoo.
Dab tsi yog qhov hardness ntawm txoj kev tsheb ciav hlau?
Txoj kev tsheb ciav hlau nyuaj sib txawv los ntawm hom, los ntawm cov qauv kev sib tw nyob ib puag ncig 248-285 Brinell (HB) mus rau siab -lub zog / lub taub hau-hardened rails ncav cuag 341-445 HB lossis txawm 35-40 Rockwell Hardness (HRC) ntawm qhov chaw, muab kev tiv thaiv rau hnav thiab kev sib xyaw ua ke, nrog rau cov khoom siv niaj hnub thiab kev sib xyaw ua ke.
Hom Hardness Ntau Yam (Brinell Hardness - HB)
- Standard Rail: Yam tsawg kawg ntawm 248 HB.
- Heavy Rail: Yam tsawg kawg ntawm 285 HB.
- High Strength / Heat Treated Rails: Ntau yam ntawm 341-388 HB, lossis siab dua (txog 445 HB) rau hom tshwj xeeb.
- R350H Qib (Tuam Tshoj): 350-390 HB.
Cov yam ntxwv cuam tshuam rau Hardness
- Cov Khoom Siv Hlau: Cov ntsiab lus carbon ntau dua (ze li 0.6-0.8%) thiab cov ntsiab lus xws li manganese, silicon, thiab chromium nce hardness thiab hnav tsis kam.
- Kev kho cua sov: Cov txheej txheem zoo li lub taub hau hardening tsim txheej txheej nyuaj heev thaum ua kom cov tub ntxhais tawv tawv, tseem ceeb heev rau kev siab - nrawm thiab hnyav- cov kab.
- Hnav: Rov qab sib cuag lub log ua rau kev ua haujlwm hardening, ua rau lub ntsej muag hardness nyob rau lub sijhawm, tab sis tuaj yeem ua rau hnav yog tias plasticity poob sai heev.
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 | |
| 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 |
Vim li cas thiaj txawv Railways siv sib txawv Hardness Levels?
Railway khiav hardness yog txiav txim los ntawm qag load, tsheb ceev, kev khiav hauj lwm ceev, curvature, thiab txij nkawm lub tswv yim. Ntawm cov kab ncaj nraim nrog nruab nrab qag loads, nruab nrab -hardness pearlitic rails muab qhov zoo sib npaug ntawm hnav tsis kam thiab qaug zog tawg kam rau ua. Nyob rau hauv txoj kev hnyav -haul, qhov twg qag loads muaj peev xwm tshaj 25-30 tons thiab tsheb ceev ceev heev, hardness siab dua txo deformation deformation thiab slows down corrugation txoj kev loj hlob, ho txhim kho lub neej- voj voog kev ua tau zoo. Txawm li cas los xij, cov kev sib tw nyuaj heev kuj yuav tsum tau tswj xyuas nruj dua ntawm cov vuam zoo thiab cov kev ntxhov siab seem, uas yog vim li cas cov qauv qhia ob qho tib si hardness thiab mechanical zog ua ke.
Crane rails thiab industrial hloov tsheb ciav hlau ua raws li cov hauv paus ntsiab lus zoo sib xws tab sis ntsib cov qauv kev thauj khoom sib txawv, suav nrog kev sib cuag hauv zos siab dua thiab cov quab yuam sab nraud los ntawm crane log flanges. Rau cov mining thiab teeb pom kev zoo-cov dej num kev lag luam, cov kev xav tau hardness qis dua, thiab cov hlau xws li 50Mn lossis 55Q raug xaiv kom sib npaug tus nqi thiab ua haujlwm ntev thaum tuav lub zog txaus.
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.
