Hlau railsyog cov khoom tseem ceeb ntawm railways, crane systems, thiab industrial lem. Lawv coj lub log raws txoj hauv kev nyab xeeb thaum coj cov khoom hnyav, faib kev ntxhov siab sib npaug rau cov neeg pw tsaug zog lossis lub hauv paus. Cov khoom siv hluav taws xob ntawm cov hlau rail txiav txim siab kev nyab xeeb, ua haujlwm ntev, thiab kev ua haujlwm zoo. Ntawm cov hlau uas nquag siv, Q235B steel yog dav siv hauv kev lag luam rails, lub teeb crane rails, thiab kev thauj mus los ib ntus vim nws qhov sib npaug ntawm lub zog, ductility, thiab nqi -kev ua tau zoo.
Lub zog ntawm Q235B steel yog dab tsi?
Q235B steel muaj qhov tsawg kawg nkaus tawm lub zog ntawm235 MPa rau(N / mm²) thiab lub zog tensile ntau ntawm370-500 MPa, nrog zoo ductility (nyob ib ncig ntawm 20-26% elongation) thiab weldability, ua rau nws ib tug ntau, txhim khu kev qha steel qauv rau kev tsim kho, txuas hniav, thiab cov khoom siv dav dav. Nws lub zog muaj zog yog qhov tseem ceeb rau kev siv cov khoom siv thauj khoom, txawm tias qhov tseem ceeb txo qis me ntsis nrog cov tuab tuab, thiab nws kuj muaj qhov cuam tshuam zoo.
Lub zog tseem ceeb Properties:
- Yield Strength (ReH): Ntau dua lossis sib npaug li 235 MPa (rau cov thicknesses tsawg dua lossis sib npaug li 16 hli).
- Tensile zog (Rm): 370-500 MPa.
- Elongation: ~ 20-26% (qhia tau zoo formability).
- Impact Toughness: Ntau dua lossis sib npaug rau 27 J ntawm 20℃(rau Q235B).
| 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 | ||
Qhov "Q235B" txhais li cas:
- Q: Sawv cev "Yield" (Qie) hauv Suav, qhia txog lub zog tawm los.
- 235: Qhov tsawg kawg nkaus lav tawm lub zog hauv MPa (N / mm²) rau cov khoom siv hauv paus.
- B: Qhia txog qib zoo, nrog 'B' qhia tias nws nkag mus hauv chav - qhov ntsuas kub ntawm qhov ntsuas, tsis zoo li 'A', muab qhov ua tau zoo dua.
Yam qauv Rail Model twg muaj nyob rau hauv Q235B Steel?
Q235B steel yog dav siv nyob rau hauv ntau yam thoob ntiaj teb rail qauv, ua rau nws ua hauj lwm rau ntau yam kev lag luam thiab crane daim ntawv thov.GNEE RAILmuab cov kev tsheb ciav hlau uas ua raws li GB, JIS, DIN, thiab ASTM cov qauv.
| Txuj | Hom Rail | Khoom siv | Qhov hnyav (kg / m) | Hom kev siv |
|---|---|---|---|---|
| GB/T 11264-2012 | 22 Kg Rail | Q235B | 22.3 | Lub teeb industrial & warehouse lem |
| GB/T 11264-2012 | 4 3kg rwj | Q235B | 43.0 | Me me crane rails |
| JIS E1103-91 | 22 Kg Rail | Q235B | 22.3 | Gantry crane & Hoobkas ntsia |
| PIB 536-70 | 50kg Rail | Q235B | 50.0 | Nruab nrab - lub luag haujlwm thauj khoom |
| ASTM A1/A1M | 60 lb Rail | Q235B | 29.7 | Lub teeb industrial rails nyob rau hauv North America |
Q235B Steel Ua li cas hauv Kev Siv Rail?
Q235B steel ua tau zoo nyob rau hauv kev sib tw tsheb ciav hlau xws li kev lag luam lem, mine tunnels, thiab qhov chaw ib ntus vim nws cov yas zoo heev, weldability, thiab tus nqi -effectiveness, muab qhov zoo sib npaug ntawm lub zog (Yield Strength ~ 235 MPa) thiab ductility rau qis loads thiab siv tsis tu ncua, txawm tias siab dua - qib steel55Qlos yogua 71mnyog nyiam rau hnyav-lub luag hauj lwm, siab- ceev mainline rails xav tau superior hnav tsis kam thiab lub zog.
| 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 | ||||
| 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 |
Q235 Steel vs Q355 Steel: 5 Qhov Tseem Ceeb Qhov Sib Txawv
| Khoom | Q235 (Mild carbon hlau) | Q355 (High-Lub zog qis-Alloy Steel) | Qhov txawv tseem ceeb |
|---|---|---|---|
| Yield zog | Ntau dua lossis sib npaug li 235 MPa (thickness Tsawg dua lossis sib npaug li 16 hli) | Ntau dua lossis sib npaug li 355 MPa (thickness Tsawg dua lossis sib npaug li 16 hli) | Q355 muaj kwv yees li.51% siab dua yield zogua q235. |
| Tshuaj muaj pes tsawg leeg | C Tsawg dua lossis sib npaug li 0.22%, tsis muaj cov ntsiab lus alloying, S Tsawg dua lossis sib npaug rau 0.045% | C Tsawg dua lossis sib npaug rau 0.18%, muaj Mn, V, thiab lwm yam., S Tsawg dua lossis sib npaug rau 0.025% | q355 uatsawg impuritiesthiab yogalloy-muaj zog. |
| Tsawg-Tsub Toughness | Qib D: Lub zog cuam tshuam ntau dua lossis sib npaug ntawm 27 J ntawm -20℃(tsuas yog rau qhov kub thiab txias) | Qib E: Lub zog cuam tshuam ntau dua lossis sib npaug ntawm 27 J ntawm -40 degree | q355 uahaum rau qis- qhov kub thiab txias ib puag ncig. |
| Corrosion Resistance | Nruab nrab; yuav tsum tau galvanizing, kev pab lub neej ~ 15 xyoo | Zoo dua; alloying txhim kho xeb tsis kam, kev pabcuam lub neej Ntau dua lossis sib npaug li 30 xyoo | Q355 muajdurability zoo dua thiab txo tus nqi kho. |
| Ua haujlwm tau | Yooj yim rau weld thiab khoov; tsis muaj cov txheej txheem tshwj xeeb | Yuav tsum tau qis -hydrogen electrodes thiab preheating ua ntej vuam | q235 yogyooj yim dua thiab yooj yim dua rau txheej txheem. |
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.