Q235 Steel yog dab tsi?
Q235 steelyog cov qauv siv dav hauv Suav teb, qis- carbon structural steel paub txog nws qhov zoo weldability, machinability, thiab nruab nrab lub zog, ua rau nws yooj yim rau kev tsim kho, machinery qhov chaw, thiab cov khoom siv hauv vaj tse, txuas hniav, thiab nkoj tsim. Nws lub npe qhia txog qhov tsawg kawg nkaus tawm lub zog ntawm 235 MPa (megapascals), nrog rau "Q" sawv cev rau lub zog tawm los, thiab nws muaj nyob rau hauv qib (A, B, C, D) uas txawv ntawm qhov qis - qhov kub thiab txias yuav tsum muaj qhov hnyav.
Lub "Q" sawv cev rau "Yield Strength," thiab "235" txhais tau tias nws lub zog tawm los yog ntau dua lossis sib npaug li 235 MPa thaum lub thickness tsawg dua lossis sib npaug li 16 hli.
| 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 | ||
Raws li qis- carbon steel (cov ntsiab lus carbon tsawg dua lossis sib npaug li 0.22%), nws muaj qhov zoo meej hauv cov khoom siv tsheb ciav hlau thiab kev tsim khoom:
- Strong processing adaptability:Nws muaj plasticity siab (elongation Ntau dua lossis sib npaug li 26%), ua kom yooj yim rau kev txiav, laum, vuam, thiab khoov. Nws ua haujlwm zoo rau qhov nyuaj xws li lub hauv paus daim hlau ntawm rail clamps thiab txuas qhov ntawm cov ntses. Q235 steel tuav cov duab no yooj yim. Vuam yog yooj yim nrog J422 electrodes, thiab tsis muaj kev hloov kho tshwj xeeb.
- Kev siv nyiaj zoo:Nws tsis muaj cov ntsiab lus alloy, thiab nws cov txheej txheem tsim khoom yog yooj yim. Nws chav tsev nqi qis dua Q355 steel. Rau cov uas tsis yog- qhov tseem ceeb load- bearing profiles, zoo li lub kaum ntse ntse steel los yog lub teeb channel steel siv nyob rau hauv lub Hoobkas tsev, Q235 steel pab txo cov nqi zoo.
- Kev siv dav dav:Nws feem ntau yog siv rau hauv kev tsim kho pej xeem rau cov khoom embedded, lub teeb shelving, thiab tsis yog -load- bearing Hoobkas txhawb. Nws kuj haum rau tsawg- kev siv kev ntxhov siab xws li cog kev tsheb ciav hlau, lub teeb tsheb ciav hlau, tsheb ciav hlau clamps, thiab kev sib txuas dav dav. Nws muab kev ruaj ntseg txaus rau kev thauj khoom txhua hnub (piv txwv li, tsheb thauj mus los tsawg dua lossis sib npaug li 10 tons) thiab tiv taus deformation zoo.
Q235 steel feem ntau siv li cas?
Q235 steel feem ntau yog siv rau lub teeb- txoj haujlwm rails, xws li cov hauv kev tsheb ciav hlau, kev ua haujlwm mining, lem ib ntus, thiab cov tes hauj lwm ntiag tug, qhov uas nws muaj tus nqi zoo -kev ua tau zoo, weldability, thiab lub zog rau cov khoom nruab nrab, feem ntau hauv cov chav sib zog xws li 8kg / m txog 30kg / m. Thaum nws tsim nyog rau kev sib tw, hnyav dua rau cov kab tseem ceeb siv cov ntaub ntawv muaj zog, tab sis Q235 tseem nrov rau cov ntawv siv sib dua uas xav tau qhov sib npaug ntawm kev ua tau zoo thiab tus nqi.
| 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 | |
Puas yog Q235 siv rau hauv cov qauv kev tsheb ciav hlau lossis cov tsheb ciav hlau ciav hlau?
Tsis muaj.Q235 tsis haum rau txoj kev tsheb ciav hlau loj, metro, lossis siab - daim ntawv thov kev tsheb ciav hlau ceev. Cov tshuab no xav tau:
- siab tsis kam rau dov kev qaug zog
- muaj zog hnav tsis kam
- ruaj khov microstructure nyob rau hauv rov qab kev nyuaj siab
Yog li ntawd, lawv siv rail steels xws li:
- U71Mn (GB)
- R260 / R350HT (EN 13674 / UIC)
- 900A (AREMA)
- JIS E rail qib
| Qib | Standard / cheeb tsam | Kev sib xyaw ua ke (wt%) |
| R260 | TS EN 13674-1 (Tebchaws Europe) | C: 0.67–0.80, Mn: 0.90–1.20, Si: Tsawg dua lossis sib npaug rau 0.50 |
| R350 HT | TS EN 13674-1 (Tebchaws Europe) | C: 0.75–0.85, Mn: 0.80–1.20, Cr: 0.20–0.50 |
| Qib 260 | AREMA (North America) | C: ~0.77, Mn: ~1.0–1.2, Si: ~0.2 |
| Qib 350 | AREMA + Mill Specs (USA/Canada) | C: 0.78–0.83, Mn: 0.90–1.20, Cr: 0.2–0.6, + V/Nb (microalloyed) |
| BH Rail (Baitic) | JIS E 1101 (Nyiv), tau txais kev pom zoo hauv EU / Is Nrias teb | C: 0.65–0.80, Mn: 1.0–1.4, Cr/Mo/Ni (yeem, zeb- tshwj xeeb) |
| ua 71mn | GB / T 2585 (Tuam Tshoj) | C: 0.65–0.77, Mn: 1.10–1.40, Si: 0.15–0.35 |
| U75V | GB / T 2585 (Tuam Tshoj) | C: 0.67–0.77, Mn: 0.70–1.00, V: 0.04–0.12 |
Kev siv Q235 nyob rau hauv cov xwm txheej no yuav ua rau lub taub hau tsheb ciav hlau ceev ceev, cov yas ntws, qhov chaw tawg, thiab kev hloov tsis tu ncua, uas yog qhov tsis tsim nyog rau kev nyab xeeb thiab kev saib xyuas kev lag luam.
Txij xyoo 2008,GNEE RAILtau muab steel rails ntawm cov 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 khoom, GNEE ua tau zoo steel rails uas tau 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.