Hlau Railsyog qhov tseem ceeb ntawm txoj kev tsheb ciav hlau tau muab tso rau hauv ob qho tib si kab sib txuas los muab kev txuas mus ntxiv, ruaj khov thiab theem saum npoo rau kev khiav tsheb ciav hlau. Lub tsheb ciav hlau hnyav thiab ceev ceev yuav tsum tau ua kom muaj kev ntxhov siab ntau dua, yog li lawv tau tsim los ntawm cov pa roj carbon siab (carbon -0.6% mus rau 0.8%, manganese 0.8% -1.3%, silicon 0.1% -0.5%, sulfur thiab phosphorus 0.03% siab tshaj txhua, thiab txhuas 0.015% siab tshaj). Qee qib ntawm cov hlau muaj chromium (Cr{10}} % rau 1.2 %). Hlau Rails kuj yog tsim los ntawm cov hlau tshwj xeeb uas muaj niobium (Nb- 0.04 % max.) lossis vanadium (V-0.2 % max.).
GB Steel Rail Los ntawm GNEE RAIL
| 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 | |
| Kev faib tawm | Qhov siab (mm) | Lub taub hau (mm) | Hauv qab (mm) | Thickness (mm) | Qhov hnyav (kg / m) | |
| 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 | |
| Kev faib tawm | SIZE (mm) | theoretical luj | |||||||||
| qhov siab | hauv qab dav | taub hau dav | lub duav tob | ||||||||
| Crane rail | qw 70 | 120 | 120 | 70 | 28 | 52.8 | |||||
| qw 80 | 130 | 130 | 80 | 32 | 63.69 | ||||||
| QU 100 | 150 | 150 | 100 | 38 | 88.96 | ||||||
| qw 120 | 170 | 170 | 120 | 44 | 118.1 | ||||||
Dab tsi ntawm cov hlau yog cov kev tsheb ciav hlau ua los ntawm?
Txoj kev tsheb ciav hlau feem ntau yog ua los ntawm siab - zoo, kub- cov pa roj carbon steel, feem ntau nrog cov manganese ntxiv thiab qee zaum lwm yam alloying xws li chromium los yog vanadium rau lub zog ntxiv thiab hardness, kom tiv taus qhov hnyav thiab kev sib txhuam; cov no yog qee zaum ntxiv cua sov- kho kom muaj zog ntxiv, tsim kom muaj kev ruaj khov, tshwj xeeb kev tsheb nqaj hlau.
Cov yam ntxwv tseem ceeb & Kev sib xyaw
- Carbon Steel Base: Cov khoom siv tseem ceeb yog nruab nrab rau cov pa roj carbon ntau (ib puag ncig 0.7-0.8% carbon) nrog cov ntsiab lus tseem ceeb ntawm manganese (0.7-1%) rau lub zog.
- Alloys rau Kev Ua Tau Zoo: Cov ntsiab lus zoo li vanadium, chromium, lossis titanium ntxiv rau cov hlau alloy kom nce hardness, ua rau lawv haum rau hnyav dua thiab ceev ceev.
- Kev kho cua sov: Cov ntsia hlau tau tswj xyuas cua sov thiab txias (quenching & tempering) los kho lawv cov microstructure, txhawb zog thiab hnav tsis kam, tshwj xeeb tshaj yog nyob rau hauv lub taub hau tsheb ciav hlau (qhov twg lub log kov).
- Kub- Rolled Txheej Txheem: Cov hlau yog zoo li dov ntawm qhov kub thiab txias, ua tus yam ntxwv T-puab (pav- hauv qab tsheb ciav hlau) uas muab qhov chaw ruaj khov, tsis tu ncua rau cov tsheb ciav hlau.
| Qib Steel | C(%) | Si | Mn | Cr | V | P | S | Tensile zog (Rm / MPa) |
| ua 71mn | 0.65~0.76 | 0.15~0.58 | 0.70~1.40 | – | – | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.030 | Ntau dua lossis sib npaug li 880 |
| U75V | 0.71~0.80 | 0.50~0.80 | 0.75~1.05 | – | 0.04~0.12 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.030 | Ntau dua lossis sib npaug li 980 |
| ua 78crv | 0.72~0.82 | 0.50~0.80 | 0.70~1.05 | 0.30~0.50 | 0.04~0.12 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.030 | Ntau dua lossis sib npaug rau 1080 |
| U77MnCr | 0.72~0.82 | 0.10~0.50 | 0.80~1.10 | 0.25~0.40 | – | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.025 | Ntau dua lossis sib npaug li 980 |
| ua 76kr | 0.71~0.81 | 0.50~0.80 | 0.80~1.10 | 0.25~0.35 | 0.04~0.08 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.025 | Ntau dua lossis sib npaug rau 1080 |
Txij li thaum xyoo 2008, GNEE RAIL tau muab cov hlua hlau sib txawv rau ntau tshaj 18 xyoo, steel rails los ntawm GNEE tau pom zoo nyob hauv Suav teb thiab txawv teb chaws.Wtih cov cuab yeej txiav ntug, GNEE tsim cov khoom zoo steel hlau uas ua tau raws li cov kev cai ntawm 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.