Q355B steel hlauyog lub siab -lub zog qis- alloy (HSLA) cov qauv hlau dav siv hauv kev tsim khoom hauv nkoj thiab sab nrauv engineering, vim nws qhov tshwj xeeb weldability, toughness, thiab muaj peev xwm los tswj cov qauv kev ncaj ncees txawm nyob rau hauv ib puag ncig hnyav.
Ua raws li GB / T 1591-2018 tus qauv, qib steel no yog lub zog tsawg kawg nkaus ntawm 355 MPa thiab cov tawv tawv zoo tshaj plaws yog qhov kev xaiv zoo tshaj plaws rau kev tsim tawm ntawm ntug dej hiav txwv piling, nkoj, thiab ntau yam khoom siv.
Q355B Steel yog dab tsi?
Q355B yog Suav qis- alloy siab- lub zog steel qauv txhais los ntawm GB / T 1591-2018 tus qauv. Nws yog tus cwj pwm los ntawm qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa thiab muaj cov weldability zoo heev. Cov qib steel no tau siv dav hauv kev tsim kho, choj engineering, thiab cov tshuab hnyav.
Tshuaj muaj pes tsawg leeg ntawm Q355B steel
| Khoom siv | C | Si | Mn | P | S | Cr. | Ni | Cu | N |
| Q355B | Tsawg dua lossis sib npaug li 0.20% | Tsawg dua lossis sib npaug li 0.55% | Tsawg dua lossis sib npaug li 1.60% | Tsawg dua lossis sib npaug li 0.030% | Tsawg dua lossis sib npaug li 0.030% | Tsawg dua lossis sib npaug li 0.30% | Tsawg dua lossis sib npaug li 0.30% | Tsawg dua lossis sib npaug li 0.40% | Tsawg dua lossis sib npaug li 0.012% |
Mechanical Properties ntawm Q355B steel
| Khoom | Tus nqi / Ntau Yam (Metric) |
|---|---|
| Yield zog (0.2% offset) | 355 MPa (Min) |
| Tensile zog | 470 - 630 MPa |
| Elongation | Ntau dua lossis sib npaug li 20% |
| Impact Strength (Charpy) | Ntau dua lossis sib npaug li 27 J |
| Impact Test Temp | +20 degree |
Vim li cas thiaj xaiv Q355B Steel rau Nkoj & Marine Engineering Structure?
Siab zog thiab siab toughness:Q355B yog cais raws li qis- alloy, siab - lub zog steel qauv; nrog lub zog tawm los ntawm 355 MPa (rau cov thicknesses tsawg dua lossis sib npaug li 16 hli), nws muaj peev xwm tiv taus cov kev ntxhov siab uas muaj nyob rau hauv marine ib puag ncig.
Weldability zoo heev:Q355B nthuav dav weldability zoo heev, ua tau siab - lub zog vuam cov pob qij txha uas tiv taus kev tawg thaum lub sij hawm vuam, yog li txo cov kev tsim kho thiab cov nqi.
Broad Low-Tsub Toughness:Raws li qib B steel, nws lav qhov cuam tshuam txaus rau qhov kub thiab txias (kwv yees li 0℃lossis qis dua), yog li ua tau raws li qhov xav tau ib puag ncig ntawm marine chaw-tshwj xeeb yog cov nyob hauv thaj chaw txias.
Corrosion Resistance thiab Reliability:Piv rau Q235B, Q355B muaj kev ruaj ntseg zoo dua; thaum ua ke nrog cov kev tiv thaiv tsim nyog, nws ua kom lub neej ntev kev pab cuam nyob rau hauv corrosive ib puag ncig, xws li marine atmospheres thiab splash zones.
Kev siv ntawm Q355B Steel hauv Nkoj & Marine Engineering Structures
Shipbuilding thiab Hull Structures:Siv rau kev tsim cov nkoj hulls thiab lawj machinery.
Offshore Engineering:Dav siv nyob rau hauv offshore cua turbine foundations, mooring systems, thiab roj drilling platforms.
Chaw nres nkoj Infrastructure:Siv los ua cov khoom siv rau piers, quay phab ntsa, thiab mooring systems.
Marine Equipment thiab Ntim:Siv rau hauv kev tsim cov thawv ntim khoom, cov thawv ntim khoom, thiab ntau hom khoom tshwj xeeb.
Marine Structural Profiles:Muaj nyob rau hauv ntau hom, xws li tsis sib npaug - ceg kaum steel thiab ntau lwm yam qauv profiles.
Yog tias koj xav tau cov ntsiab lus ntxiv txog Q355B steel, thov tsis txhob yig tiv tauj peb.
Raws li lub chaw tsim khoom ntawm Q355B steel hauv Suav teb, GNEE boasts ntau tshaj 20 xyoo ntawm kev lag luam kev lag luam. Peb cov warehouses tuav cov khoom muag sawv ntsug ntawm ntau tshaj 50,000 tons xyoo-ib puag ncig, kom ntseeg tau tias kev txiav txim tuaj yeem xa tuaj hauv tsawg li xya hnub. Hais txog kev lees paub zoo, peb yog ob lub chaw muag khoom muaj ntawv pov thawj tuav API thiab ISO daim ntawv pov thawj, thiab peb zoo siab tos txais kev tshuaj xyuas los ntawm thib peb -cov koom haum xws li SGS, BV, thiab Lloyd's.
Los ntawm kev xaiv peb cov khoom siv hlau Q355B, koj yuav tau txais txiaj ntsig los ntawm peb cov neeg siv khoom dav dav, -cov kev pabcuam txhawb nqa, nrog rau peb cov nqi ntau dua - ntxiv cov peev txheej ua haujlwm. Peb yuav zoo siab los muab tag nrho - spectrum kev txhawb nqa thiab kev pab rau koj qhov project.
Hu rau tam sim no kom tau txais Q355B steel
| Hom | Q355B |
| Txuj | AISI, ASTM, BS, GB, DIN, JIS, thiab lwm yam |
| Daim ntawv pov thawj | ISO, SGS, CE |
| Ntev |
Kev tsim khoom raws li cov neeg siv khoom xav tau |
| Thickness | 8-160 hli |
| Dav | 2000-2500MM |
| Nto | Coated |
| Cov txheej txheem | Kub dov |
| Pob | Muaj nyob rau ntawm kev thov lossis Standard Export Packing |
| Daim ntawv thov | Siv dav hauv Kev Tsim Kho Vaj Tsev, Choj, Architecture, Tsheb Cheebtsam, hipping, Lub thawv siab siab, Boiler, Loj Structure steel thiab lwm yam. |
Lub npe "Q355B" yog dab tsi?
"Q" sawv rau Yield Strength (Qu Fu hauv Suav); "355" qhia qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa; thiab "B" sawv cev rau qib zoo, tshwj xeeb tshaj yog lub ntsiab lus ntawm cov hlau tau raug kuaj ntawm +20℃.
Dab tsi yog qhov sib npaug thoob ntiaj teb ntawm Q355B?
Nws qhov sib npaug thoob ntiaj teb feem ntau yog European S355JR (EN 10025), American ASTM A572 Qib 50, thiab Japanese JIS SM490.
Q355B steel puas tau yooj yim welded?
Yog lawm, Q355B muaj weldability zoo heev. Vim nws qhov sib npaug ntawm cov pa roj carbon tsawg (CEV), nws tuaj yeem welded siv cov txheej txheem xws li SMAW, GMAW, thiab submerged arc vuam yam tsis muaj preheating.
Q355B puas xav tau kev kho cua sov?
Q355B feem ntau yog xa hauv Kub Rolled (HR) lossis Tswj Rolled (CR). Rau cov phaj tuab heev lossis cov haujlwm tshwj xeeb, nws yuav muab tau raws li Normalized (N) lossis Thermomechanical Control Processed (TMCP).