Hlau railspaub tias yog ib feem tseem ceeb ntawm txoj kev tsheb ciav hlau. Hom steel rail feem ntau muab faib los ntawm qhov hnyav. Piv txwv li, peb feem ntau hais 50kg tsheb ciav hlau, uas txhais tau tias cov tsheb ciav hlau nrog qhov hnyav ntawm 50kg / m, thiab lwm yam. Muaj 38kg rails, 43kg rails, 50kg rails, 60kg rails, 75kg rails, thiab lwm yam. Kuj tseem muaj 24kg rails thiab 18kg rails, ntawm cov rails ntawm 43 rails thiab saum toj no yog feem ntau hu ua hnyav rails, txwv tsis pub, steel 3 rails hnyav li hauv qab no 4 kg. Muaj ib yam tshwj xeeb ntawm steel rail uas hu ua crane rail. Crane rail yog siv rau crane railway.
| Kev faib tawm | Qhov siab (mm) | Lub taub hau (mm) | Hauv qab (mm) | Thickness (mm) | Qhov hnyav (kg / m) | |
| Lub Teeb Rail | 8 KG / M | 65 | 25 | 54 | 7 | 8.42 |
| 9 KG / M | 63.5 | 32.1 | 63.5 | 5.9 | 8.94 | |
| 12 KG / M | 69.85 | 38.1 | 69.85 | 7.54 | 12.2 | |
| 15 KG / M | 79.37 | 42.86 | 79.37 | 8.33 | 15.2 | |
| 18 KG / M | 80 | 40 | 80 | 10 | 18.06 | |
| 22 KG / M | 93.66 | 50.8 | 93.66 | 10.72 | 22.3 | |
| 24 KG / M | 107 | 51 | 90 | 10.9 | 24.46 | |
| 30 KG / M | 107.95 | 60.33 | 107.95 | 12.3 | 30.1 | |
| Heavy Rail | 38 KG / M | 134 | 68 | 114 | 13 | 38.733 |
| 43 KG / M | 140 | 70 | 114 | 14.5 | 44.653 | |
| 45 KG / M | 145 | 67 | 126 | 14.5 | 45.546 | |
| 50 KG / M | 152 | 70 | 132 | 15.5 | 51.514 | |
| 60 KG / M | 176 | 73 | 150 | 16.5 | 60.64 | |
| Crane Rail | qw 70 | 120 | 70 | 120 | 28 | 52.8 |
| qw 80 | 130 | 80 | 130 | 32 | 63.69 | |
| QU 100 | 150 | 100 | 150 | 38 | 88.96 | |
| qw 120 | 170 | 120 | 170 | 44 | 118.1 | |
Cov hlau twg yog siv rau hauv rails?
Cov tsheb ciav hlau siv tshwj xeeb siab - carbon steels, feem ntau alloyed nrog cov ntsiab lus xws li manganese (Mn), chromium (Cr), los yog vanadium (V) rau kev txhim kho lub zog, hardness, thiab hnav tsis kam, nrog rau cov qib zoo li R260 thiab R350HT muab kev ua tau zoo nyob rau hauv hnyav loads, tshwj xeeb tshaj yog nyob rau hauv high -ceev los yog siab - tsheb thauj mus los. Cov hlau no tau xaiv rau lawv cov kav ntev, muaj peev xwm tiv taus siab hnyav, thiab tiv taus qaug zog thiab puas.
Yam tseem ceeb ntawm Rail Steels:
- High -Carbon Steel: Cov khoom siv yooj yim, muab lub zog thiab hardness.
- Manganese Steel (R260Mn): Kev xaiv nrov rau kev siv dav dav, ntsuas lub zog thiab hnav cov khoom.
- Thaum tshav kub kub-Thiab Steels (R350HT, R350LHT): Kev tswj cov cua sov thiab cua txias kom zoo dua hardness thiab lub zog, zoo tagnrho rau nkhaus thiab siab - kab ceev.
- Alloy Steels: Muaj cov khoom xws li chromium, vanadium, lossis niobium rau kev tiv thaiv ntau dua rau hnav, qaug zog, thiab xeb, siv rau hauv kev thov.
Cov tshuaj muaj pes tsawg leeg ntawm tsheb ciav hlau khiav steel
| Tsis muaj. | Element | Muaj nuj nqi |
|---|---|---|
| 1 | C | Txhim kho lub zog, hardness, thiab hnav tsis kam ntawm txoj kev tsheb ciav hlau. Cov ntsiab lus carbon ntawm cov tsheb ciav hlau hauv tsev yog 0.65% txog 0.82%. Thaum cov ntsiab lus carbon yog qhov siab, cov hlau ua nkig, thiab nws cov plasticity Performance index yuav txo qis. Nyob rau tib lub sijhawm, nws yuav ua rau kom muaj feem ntawm cov pob dawb hauv cov hlau. |
| 2 | Si | Nws yog ib qho yooj yim los ua ke nrog oxidation thiab tuaj yeem ua lub luag haujlwm ntawm kev tshem tawm npuas hauv cov hlau. Cov hlau muaj qhov tsim nyog ntawm silicon, uas tuaj yeem txhim kho hardness thiab hnav tsis kam ntawm cov hlau. Cov ntsiab lus ntawm kev tsheb ciav hlau hauv tsev yog feem ntau 0159-0.9%, tab sis cov ntsiab lus ntau dhau yuav ua rau cov hlau nyuaj thiab nkig, thiab nws yooj yim los tsim cov pores hauv qhov vuam. |
| 3 | Mn | Nws yog ib qho txiaj ntsig zoo uas tuaj yeem txhim kho lub zog thiab hnav tsis kam ntawm cov hlau thiab ua rau kom muaj zog ntawm cov hlau. Nws tuaj yeem tshem tawm cov teeb meem hlau oxide thiab sulfide inclusions hauv cov hlau. Cov ntsiab lus manganese feem ntau tswj ntawm 0.6% thiab 1.54%. Hlau nrog cov ntsiab lus manganese ntau dua 1.2% yog hu ua nruab nrab manganese steel, thiab nws cov hnav tsis kam yog siab heev. |
| 4 | Cu | Nws yog ib qho txiaj ntsig zoo. Cov hlau muaj tsawg tus tooj liab sib txuas, uas tuaj yeem txhim kho qhov qaug zog thiab corrosion tsis kam ntawm cov hlau. Cov ntsiab lus tooj liab ntawm cov hlau hauv tsev yog feem ntau ntawm 0.10% thiab 0.40%. Yog tias cov txheej txheem dov ntawm cov tooj liab- muaj cov tsheb ciav hlau tsis zoo, cov ntses- zoo li cov kab nrib pleb yuav tshwm sim ntawm qhov chaw tsheb ciav hlau |
| 5 | P | Nws yog ib qho teeb meem. Qhov phom sij loj tshaj plaws ntawm phosphide yog txo cov plasticity thiab toughness ntawm cov hlau. Tshwj xeeb tshaj yog nyob rau hauv qis kub, qhov txias brittleness ntawm cov hlau nce, uas yooj yim ua rau tawg rails, thiab nws cov ntsiab lus yog tswj tsis pub tshaj 0.04%. |
| 6 | S | Cov sulfur yog ib qho teeb meem. Nws feem ntau yog nyob rau hauv cov hlau nyob rau hauv daim ntawv ntawm granules. Thaum lub tsheb ciav hlau tau dov, nws yog dov ua ke nrog cov hlau rau hauv cov nplooj ntawv, uas ua rau delamination lossis longitudinal tawg nyob rau hauv txoj kev tsheb ciav hlau. Tus nqi ntawm sulfur yog tswj tsis pub ntau tshaj 0.05% |
Lub hardness ntawm kub -rolled railway khiav hlau
| Khoom siv | Tensile zog / Mpa | Hardness / HB |
|---|---|---|
| U75V | Ntau dua lossis sib npaug li 980 | 280~320 |
| ua 78crv | Ntau dua lossis sib npaug rau 1080 | 310~360 |
| ua 76kr | Ntau dua lossis sib npaug rau 1080 | 310~360 |
| U77MnCr | Ntau dua lossis sib npaug li 980 | 290~330 |
Lub hardness ntawm tshav kub- kev kho tsheb ciav hlau khiav hlau
| Khoom siv | Tensile zog / Mpa | Hardness / HB |
|---|---|---|
| U75V | Ntau dua lossis sib npaug rau 1180 | 320~380 |
| ua 78crv | Ntau dua lossis sib npaug rau 1280 | 370~420 |
Txij xyoo 2008,GNEE RAILtau muab steel rails ntawm ntau 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 cov cuab yeej, GNEE ua tau zoo steel rails 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.
