Kub-dip galvanized steel
Kub-dip galvanized steel S280GD raws li EN 10346 tus qauv yog siab-cov qauv hlau zoo uas tau tsim tshwj xeeb rau kev siv hauv kev tsim vaj tsev thiab kev tsim vaj tsev. Nrog rau cov khoom siv tooj 1.0244, S280GD muaj qhov tsawg kawg nkaus yield zog Rp0.2 ntawm 280 N / mm² thiab yog li koom nrog cov chav kawm siab zog ntawm galvanized structural steels. Kub-dip galvanizing raws li EN 10346 lav ib txheej zinc txheej ntawm cov hlau nto, uas zoo tiv thaiv cov khoom siv tiv thaiv corrosion. Ua tsaug rau ntau yam txheej txheej txheej txheej (+ Z, + ZF, + ZA, + ZM, + AZ thiab + AS), cov khoom siv tau raug hloov mus rau qhov sib txawv climatic thiab mechanical stresses.
Cov txheej txheem ntau lawm ntawm S280GD Steel
Peb S280GD steel los ntawm GNEE STEEL siv cov txheej txheem siab - cov txheej txheem tsim khoom los xyuas kom meej tias txhua pawg ntawm cov khoom tuaj yeem ua tiav qhov kev ua tau zoo thiab zoo. Cov hauv qab no yog cov kauj ruam tseem ceeb ntawm peb cov txheej txheem S280GD:
Raw khoom smelting: Peb thawj yaj hlau ore thiab carbon ntawm qhov kub ntawm txog 1500℃los ua kua hlau. Qhov no yog lub hauv paus ntawm tag nrho cov txheej txheem ntau lawm.
Nruam casting: Cov hlau ua kua ntws mus rau hauv cov khoom siv casting, qhov uas nws maj mam txias thiab solidifies rau hauv ib lub billet, uas dhau los ua cov khoom siv rau cov kauj ruam tom ntej ntawm kev ua haujlwm.
Kub dov:Lub billet yog rhuab mus txog 1100℃thiab dov los ntawm ib tug dov zeb mus rau lub thickness yuav tsum tau. Cov txheej txheem no nteg lub hauv paus ruaj khov rau cov txheej txheem tom ntej ntawm cov hlau.
Txias Rolling:Lub kub-khoov hlau yog txias sai thiab dov dua nyob rau hauv chav tsev kub kom paub meej tias cov hlau nto yog du thiab qhov loj yog qhov tseeb.
Annealing:Cov hlau txias- dov steel yog rhuab mus rau qhov kub ntawm 700-900℃thiab annealed los txhim kho cov ductility ntawm cov hlau thiab txo cov kev ntxhov siab sab hauv.
Galvanizing:Thaum kawg, cov hlau yog coated nrog ib txheej zinc ntawm li 450℃los ntawm kev kub -dip galvanizing txheej txheem, uas zoo txhim kho nws cov corrosion kuj thiab ua kom ntev - lub sij hawm durability.
Tsis zoo li S250GD steel, S280GD siv ntau dua rolling pressures thiab ceev ceev cua txias thaum lub sij hawm ntau lawm txheej txheem kom ua tau ib tug yield zog ntawm 280 MPa. S250GD ua tiav lub zog tawm los ntawm 250 MPa los ntawm kev qis qis thiab qis qis qis.
Tshuaj muaj pes tsawg leeg ntawm S280GD hlau
| Element | Cov ntsiab lus (%) |
| Hlau, Fe | 98-99 |
| Carbon, C | 0.1-0.2 |
| Manganese, Mn | Tsawg dua los yog sib npaug rau 1.2 |
| Phosphorus, P | Tsawg dua lossis sib npaug li 0.12 |
| Sulfur, S | Tsawg dua lossis sib npaug li 0.045 |
| Silicon, Sib | Tsawg dua los yog sib npaug li 0.5 |
| Nitrogen, N | Tsawg dua lossis sib npaug li 0.012 |
| Aluminium, Al | Tsawg dua lossis sib npaug li 0.015 |
Mechanical Properties ntawm S280GD Steel
| Khoom | Metric | Imperial |
| Tensile zog | 360-440 MPa | 52-64 hli |
| Yield zog | Ntau dua lossis sib npaug li 280 MPa | Ntau dua lossis sib npaug li 40.6 ksi |
| Brinell Hardness | 110-140 HB | 110-140 HB |
| Rockwell Hardness | 65-75 HWB | 65-75 HWB |
| Vickers Hardness | 120-140 HV | 120-140 HV |
| Elongation | 20-26% | 20-26% |
| Elastic Modulus | 210 GPa | 30,500 ksg |
| Fracture Elongation (tsawg dua lossis sib npaug li 0.7mm) | Ntau dua lossis sib npaug li 16% | Ntau dua lossis sib npaug li 16% |
| Fracture Elongation (>0.7 hli) | Ntau dua lossis sib npaug li 18% | Ntau dua lossis sib npaug li 18% |
| Txheej Adhesion (Bend Radius) | 0T-2T (0-2x thickness) | 0T-2T (0-2x thickness) |
Muaj Steel Qib
| Qib hlau | Txheej | Tawm tswv yim (MPA) | Tensile (MPA) | Elongation (%) |
| xwm 51d | Z, ZF | -- | 270-500 | 20 |
| xwm 52d | Z, ZF | 140-300 | 270-420 | 22 |
| xwm 53d | Z, ZF | 140-260 | 270-380 | 26 |
| xwm 54d | Z, ZF | 140-220 | 270-350 | 30 |
| S220 GD | Z, ZF | 220 | 300 | 18 |
| S250 GD | Z, ZF | 250 | 330 | 17 |
| S280 GD | Z, ZF | 280 | 360 | 16 |
| S320 GD | Z, ZF | 320 | 390 | 15 |
| S350 GD | Z, ZF | 350 | 420 | 14 |
| S400 GD | Z, ZF | 400 | 470 | -- |
| S450 GD | Z, ZF | 450 | 530 | -- |
| S500 GD | Z, ZF | 500 | 560 | -- |
FAQ:
Lub zinc txheej yuav tuab npaum li cas?
Zinc txheej hnyav feem ntau yog los ntawm Z30 txog Z600 g / m² ob -sided.
Puas yog S280GD haum rau sab nraum zoov thiab corrosive ib puag ncig?
Yog - zinc lossis alloy coatings ho txhim kho corrosion kuj.
Dab tsi yog cov ntawv thov ntawm S280GD?
Cov ntawv thov muaj xws li vov tsev, phab ntsa cladding, thav duab thav duab, automotive qhov chaw, khoom siv, thiab HVAC systems.
Puas yog S280GD yooj yim rau kev tsim thiab tsim?
Yog - nws muaj qhov zoo ntawm kev khoov thiab formability rau txias sib sau thiab yob txoj kev.
S280GD puas tuaj yeem welded?
Yog - nws muab cov weldability zoo nrog cov txheej txheem tsim nyog thiab kev saib xyuas rau txheej.
S280GD yuav tsum khaws cia kom zoo?
Khaws rau hauv qhov chaw qhuav, qhov cua kom deb ntawm cov dej noo kom khaws cov txheej thiab tiv thaiv xeb.
