A hlau railyog ib txoj hauv kev ruaj khov steel uas txwv lub log txav mus rau qhov kev taw qhia uas tau hais tseg thaum txhawb nqa ntsug thiab sab nraub qaum tsim los ntawm kev txav tsheb. Nws ua haujlwm raws li lub hauv paus txheej txheem ntawm ib qho kev tsheb ciav hlau -raws li kev thauj mus los lossis kev tuav.GNEE RAILmuab steel rails hauv kev qhia tshwj xeeb, suav nrog GB 8-60 kg / m, UIC50-UIC60, DIN536 A55-A120,Q70–QU120.
ASCE rail yog dab tsi?
ASCE Rail yog ib hom kev tsheb ciav hlau uas txhais los ntawm American Society of Civil Engineering, uas yog siv hauv kev tsheb ciav hlau hauv North America. Nws yog tsuas yog siv rau kev thauj mus los lossis teeb pom kev zoo xws li kev thauj mus los ib ntus hauv thaj chaw hav zoov, mines, thiab thaj chaw tsim kho. ASCE rail qhov ntau thiab tsawg yog feem ntau teev nrog lawv qhov hnyav ib mev. Piv txwv li, ASCE85 sawv rau 85 phaus ib yard. ASCE85 rail (85lb rail / 85 phaus rail) thiab ASCE60 rail (60lb rail / 60 phaus rail) yog cov khoom kub heev. GNEE RAIL muaj cov khoom muag ntawm ASCE rail los ntawm 25lb / yd rau 85lb / yd thiab lwm yam kev tsheb ciav hlau kev muag khoom.
| Loj | Lub taub hau (mm) | Qhov siab (mm) | Puag (mm) | Web (mm) | Nominal hnyav (kg / m) | Khoom siv | Ntev (m) |
|---|---|---|---|---|---|---|---|
| UAS 25 | 38.1 | 69.85 | 69.85 | 7.54 | 12.4 | 700 | 6-12 |
| UAS 30 | 42.86 | 79.38 | 79.38 | 8.33 | 14.88 | 700 | 6-12 |
| UAS 40 | 47.62 | 88.9 | 88.9 | 9.92 | 19.84 | 700 | 6-12 |
| UAS 50 | 54 | 98.4 | 98.4 | 11.11 | 24.855 | 700 | 6-12 |
| UAS 60 | 60.32 | 107.95 | 107.95 | 12.3 | 29.76 | 700 | 6-12 |
| TIAB SA 75 | 62.71 | 122.24 | 122.24 | 13.49 | 37.2 | 900A/1100 | 12-25 |
| TIAB SA 85 | 65.09 | 131.76 | 131.76 | 14.29 | 42.17 | 900A/1100 | 12-25 |
Hlau Khoom Qib rau ASCE Rail
Txawm tiastus ntoo khaub lig-cov duab, qhov hnyav, thiab qhov ntev ntawm ASCE 25–80 rails tag nrho ua rawscov qauv tsim, ASCE rail cov khoom tsim tawm tam sim no siv siab - purity carbon steel, uas yog tsim los ntawm cov txheej txheem hlau niaj hnub smelting, los ntawm qhib -hearth rauv rau Basic Oxygen Rauv / Hluav Taws Xob Arc Rauv. Txij li cov hlau muaj kev ua haujlwm siab dua ntawm purity thiab ruaj khov dua. Microalloying thiab cov txheej txheem kho cua sov uas tsim nyog yuav ua kom nws lub zog, hnav tsis kam, thiab kev pabcuam lub neej, uas yog qhov zoo tshaj rau cov ntaub ntawv ntawm ASCE rails hauv cov hnub qub.
Cov ntaub ntawv hlau rau ASCE rail ntau lawm yog tsim los nrog ordinery carbon steel qauv, cov qib steel muaj xws li 3 hom hauv qab no:
- ASTM A1 (Carbon Steel Rail): Muaj feem xyuam rau lub teeb rail (xws li ASCE).
- ASTM A759 (High-Strength Rail Steel): Siv nyob rau hauv qee qhov chaw xa tawm.
- Lub teb chaws lossis cov qauv kev lag luam (xws li Tuam Tshoj Q235B / Q275, 55Q, thiab lwm yam)
| Q235B | Cov cuab yeej cuab tam | Tshuaj muaj pes tsawg leeg (%) | |||||||||
| Yield zog | Tensile zog | Elongation | Hardness | C | Si | Mn | S | P | |||
| MPa | kg/m² | MPa | kg/m² | min | HB | Tsawg dua los yog sib npaug | Tsawg dua los yog sib npaug | Tsawg dua los yog sib npaug | |||
| Ntau dua lossis sib npaug | Ntau dua lossis sib npaug | ||||||||||
| 235 | 24 | 375-460 | 38-47 | 26% | 0.12-0.22 | 0.35 | 0.30-0.70 | 0.045 | 0.045 | ||
| 55Q | Cov cuab yeej cuab tam | Tshuaj muaj pes tsawg leeg (%) | |||||||||
| Yield zog | Tensile zog | Elongation | Hardness | C | Si | Mn | S | P | |||
| MPa | kg/m² | MPa | kg/m² | min | HBW | Tsawg dua los yog sib npaug | Tsawg dua los yog sib npaug | ||||
| Ntau dua lossis sib npaug | Ntau dua lossis sib npaug | Ntau dua lossis sib npaug | Ntau dua lossis sib npaug | Ntau dua lossis sib npaug | |||||||
| 685 | 69 | 197 | 0.50-0.60 | 0.15-0.35 | 0.60-0.90 | 0.04 | 0.04 | ||||
ASCE rail muaj tee-rail profile thiab lub tiaj tiaj. Nws qhov siab sib npaug ntawm qhov dav ntawm lub hauv paus rau txhua qhov hnyav. Nws qhov hnyav hauv lub taub hau, lub vev xaib, thiab ko taw ntawm qhov profile teev tseg muaj qhov sib npaug ntawm 42%, 21%, thiab 37%, feem.
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.