Txoj kev tsheb ciav hlau, tseem hu ua railroad rail, nws yog cov khoom tseem ceeb ntawm txoj kev tsheb ciav hlau. Txoj kev tsheb ciav hlau qhia tsheb lub log mus rau pem hauv ntej, thiab ris lub nra ntawm lub log thiab hloov lub nra mus rau cov tsheb ciav hlau pw. Muaj qee hom kev tsheb ciav hlau nrog rau lub teeb tsheb ciav hlau, tsheb ciav hlau hnyav thiab crane rail. Lub teeb rail thiab hnyav tsheb ciav hlau yog cais nrog qhov hnyav ib meter ntawm kev tsheb nqaj hlau. Lub teeb rail feem ntau muaj xws li 8kg, 15kg, 18kg, 22kg, thiab lwm yam. Heavy rail muaj 38kg, 43kg thiab lwm yam.
| 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 | |
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.
Lub hardness ntawm rail steel yog dab tsi?
Rail steel hardness sib txawv los ntawm ntu thiab kev kho mob, tab sis feem ntau yog li ntawm 200 txog 400 Brinell Hardness (HB), nrog lub taub hau yog qhov nyuaj tshaj plaws (300-400 HB) rau hnav tsis kam, lub vev xaib nyuaj (250-300 HB) rau kev yooj yim, thiab lub hauv paus softer (200-400 HB) kev ua tau zoo thiab kev ua haujlwm zoo.
Hardness Variation nyob rau hauv ib lub Rail
- Rail Head (Running Surface): Qhov nyuaj tshaj plaws, feem ntau 300-400 HB, qee zaum siab dua nrog lub taub hau hardening, tiv thaiv kev sib cuag log.
- Rail Web: Nruab nrab hardness (nyob ib ncig ntawm 250-300 HB) rau kev txhawb nqa thiab hloov tau yooj yim.
- Rail Base (ko taw): Softest feem (ib ncig ntawm 200-250 HB) los tiv thaiv nkig tawg thiab nqus kev ntxhov siab thaum fastened.
Hom Hardness Ranges
- Standard Rails: tuaj yeem nyob ib puag ncig 248 HB thaum pib, nrog cov qauv tsim niaj hnub mus txog 400 HB.
- Premium/High-Strength Rails: Feem ntau cov cua sov- kho lossis lub taub hau- hardened kom ua tiav qib hardness ntawm 340 HB mus rau ntau tshaj 400 HB rau lub neej ntev.
- Dav Dav: Cov tawv tawv tuaj yeem poob ntawm 200 HB thiab 440 HB nyob ntawm qib thiab kev kho mob.
Cov yam ntxwv cuam tshuam rau Hardness
- Cov khoom sib xyaw: Cov ntsiab lus carbon ntau dua ua kom tawv tawv.
| 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 rau 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 |
- Kev kho cua sov: quenching thiab tempering ho txhawb hardness thiab lub zog.
- Ua Haujlwm Hardening: Lub taub hau tsheb ciav hlau yuav nyuaj dua hauv kev pabcuam vim muaj kev sib cuag log txuas ntxiv.
NtawmGNEE RAIL, peb tshwj xeeb hauv kev muab ntau yam kev tsheb ciav hlau, suav nrog cov tsheb ciav hlau hnyav, tsheb ciav hlau, tsheb ciav hlau crane thiab tsheb ciav hlau fastening, nrog rau kev sib tw siab - kev ua haujlwm tsheb ciav hlau clips thiab kev daws teeb meem. Rov qab los ntawm kev tswj hwm nruj thiab kev lag luam ntawv pov thawj, peb cov khoom raug tsim ua kom tau raws li cov qauv thoob ntiaj teb thiab ntau qhov kev xav tau.
