Hlau rail, peb kuj hu ua txoj kev tsheb ciav hlau, nws yog ib qho tseem ceeb rau steel railing system. Raws li ib feem ntawm txoj kev tsheb ciav hlau ntawm txoj kev tsheb ciav hlau, steel rail coj lub tsheb ciav hlau mus rau pem hauv ntej thiab dais lub siab loj. Meanwhile, steel rails qhia lub siab rau railway sleepers. Yog li steel rails ua lub luag haujlwm tseem ceeb hauv txoj kev tsheb ciav hlau thiab qhov zoo ntawm cov hlua hlau yog qhov tseem ceeb heev.
Tsis tas li ntawd, steel rails muaj lwm txoj haujlwm tseem ceeb. Cov hlau ntsia hlau muab qhov chaw du thiab tsis muaj zog rau cov tsheb uas ua kom muaj kev nyab xeeb.
Yuav ua li cas rails tsim?
Rail manufacturing muaj smelting seem steel rau hauv molten steel, nrum nws mus rau hauv cov duab plaub, thiab tom qab ntawd siv cov txheej txheem kub dov nrog universal mills los tsim cov hlau rau hauv cov "Kuv" profile, ua raws li kev ua kom txias, ncaj, txiav, thiab tshuaj xyuas zoo (xws li ultrasonic kuaj) kom muaj zog thiab ua haujlwm ntev rau cov khoom hnyav.
1. Raw Khoom & Smelting
- Kev npaj cov khib nyiab: Cov khoom siv rov ua dua tshiab yog cov khoom siv tseem ceeb.
- Smelting: Cov seem yog melted nyob rau hauv ib tug hluav taws xob arc rauv, nrog meej npaum li cas ntawm cov pa roj carbon thiab lwm yam ntsiab lus ntxiv los tsim tshwj xeeb steel qib (xws li U71Mn, U75V).
| 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 |
- Casting: Lub molten steel yog nruam nruam mus rau hauv loj, duab plaub "blooms" (xws li, 280mm x 380mm).
2. Cua sov & Rolling
- Cua sov: Blooms yog rhuab uniformly nyob rau hauv ib tug taug kev beam rauv mus txog 1200-1300 degree.
- Rolling: Lub paj kub yog dhau los ntawm kev sib tsoo, nruab nrab, thiab thaum kawg universal dov mills.
- Shaping: Cov mills no nce zuj zus deform lub paj mus rau qhov kawg "Kuv-puab," ua lub taub hau, lub vev xaib, thiab hauv paus, feem ntau nyob rau hauv ib qho txuas ntxiv mus.
3. Tiav & Kev Tshuaj Xyuas
- Txias & Ncaj: Cov ntsia hlau tau ua tib zoo txias thiab tom qab ntawd ncaj qha kom tshem tawm kev ntxhov siab thiab xyuas kom meej qhov tseeb, nrog cov txheej txheem zoo li qeeb quenching rau cov khoom tshwj xeeb.
- Txiav: Lawv raug txiav rau cov qauv ntev (piv txwv li, 25m, lossis ntev dua rau kev sib txuas txuas txuas ntxiv).
- Kev tshuaj xyuas: Kev kuaj xyuas zoo, suav nrog kev kuaj xyuas qhov tsis zoo, kuaj xyuas cov tsheb ciav hlau sab hauv thiab qhov chaw ncaj ncees rau lub zog, hnav tsis kam, thiab qaug zog lub neej.
4. Kev teeb tsa (tsis yog kev tsim khoom, tab sis cuam tshuam)
Rails tau koom nrog siv cov tswv yim zoo li thermite welding thiab ruaj ntseg rau kev sib txuas nrog clips lossis spikes, nrog qhov sib txawv ntawm qhov ntsuas los ntawm cov ntsuas ntsuas.
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.
GB txheem steel 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 | |
| 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 | |
Japanese kev lag luam txheem steel rail
| Loj | A | B | C | t | Qhov hnyav (kg / m) |
| JIS 15 kg | 42.86 | 79.37 | 79.37 | 8.33 | 15.2 |
| JIS 22 kg | 50.8 | 93.66 | 93.66 | 10.72 | 22.3 |
| JIS 30 A | 60.33 | 107.95 | 107.95 | 12.3 | 30.1 |
| SIB 37A | 62.71 | 122.24 | 122.24 | 13.49 | 37.2 |
| JIS 50 N | 65 | 153 | 127 | 15 | 50.4 |
| SIB 73 | 100 | 135 | 140 | 32 | 73.3 |
| CR 100 | 120 | 150 | 155 | 39 | 100.2 |
Tebchaws Askiv tus qauv
| Loj | A | B | C | t | Qhov hnyav (kg / m) |
| 50O | 52.39 | 100.01 | 100.01 | 10.32 | 24.833 |
| 60A | 57.15 | 114.3 | 109.54 | 11.11 | 30.618 |
| 60R | 57.15 | 114.3 | 109.54 | 11.11 | 29.822 |
| 70A | 60.32 | 123.82 | 111.12 | 12.3 | 34.807 |
| 75A | 61.91 | 128.59 | 114.3 | 12.7 | 37.455 |
| 75R | 61.91 | 128.59 | 122.24 | 13.1 | 37.041 |
| 80A | 63.5 | 133.35 | 117.47 | 13.1 | 39.761 |
| 80R | 63.5 | 133.35 | 127 | 13.49 | 39.674 |
| 90A | 66.67 | 142.88 | 127 | 13.98 | 45.099 |
| 100A | 69.85 | 152.4 | 133.35 | 15.08 | 50.182 |
| 113A | 69.85 | 158.75 | 139.7 | 20 | 56.398 |
