S355JR yog qhov qis- alloy siab- lub zog cov qauv hlau ua raws li European tus qauv EN 10025-2, dav siv hauv kev tsim kho, txuas hniav, tshuab tsim khoom, nkoj tsim, thiab tsheb.
S355JR Cov Cai Sau Npe
S: Qhia txog cov qauv hlau, feem ntau yog siv los tsim ntau yam qauv.
355: Sawv cev qhov tsawg kawg nkaus lub zog ntawm cov hlau, uas yog 355 MPa. Lub zog tawm los yog qhov kev ntxhov siab tsawg kawg nkaus uas cov hlau pib ua rau cov yas deformation nyob rau hauv cov quab yuam sab nraud, ncaj qha cuam tshuam cov hlau lub peev xwm los tiv thaiv sab nraud.
JR: Qhia qhov cuam tshuam toughness qib thiab kev xa khoom ntawm cov hlau. "J" sawv cev rau qhov kev xav tau ntawm lub zog, thiab "R" qhia txog qhov kub thiab txias ntawm qhov kev ua tau zoo, txhais tau hais tias qhov kev ntsuam xyuas cuam tshuam ntawm cov hlau no yog ua nyob rau hauv chav tsev kub (feem ntau yog 20 degree) thiab nws raug xa tawm hauv qhov kub ntawm -rolled mob.
Tshuaj muaj pes tsawg leeg ntawm S355JR
Cov tshuaj muaj pes tsawg leeg ntawm S355JR cov qauv hlau feem ntau suav nrog carbon (C), silicon (Si), manganese (Mn), phosphorus (P), thiab sulfur (S). Cov ntsiab lus tshwj xeeb yog raws li hauv qab no (cov txiaj ntsig tshwj xeeb yuav txawv me ntsis nyob ntawm qhov chaw lossis ntau lawm batch):
Carbon (C): Tsawg dua lossis sib npaug rau 0.22% (tsawg dua lossis sib npaug rau 0.24% hauv qee cov qauv)
Silicon (Si): Tsawg dua lossis sib npaug li 0.55%
Manganese (Mn): 1.00% ~ 1.60%.
Phosphorus (P): Tsawg dua lossis sib npaug rau 0.035% (tsawg dua lossis sib npaug rau 0.045% hauv qee cov qauv)
Sulfur (S)
Cov ntsiab lus ntawm cov ntsiab lus no nruj me ntsis tswj xyuas kom ruaj khov kev ua haujlwm ntawm cov phaj steel. Piv txwv li, cov ntsiab lus carbon uas tsim nyog ua kom cov hlau muaj lub zog tshwj xeeb thaum tuav cov weldability zoo; manganese thiab silicon txhim kho cov qauv sab hauv ntawm cov hlau, txhim kho nws lub zog thiab hardness; phosphorus thiab sulfur yog cov ntsiab lus uas nws cov ntsiab lus hauv cov hlau yuav tsum tau tswj nruj heev, vim tias cov nyiaj ntau dhau yuav ua rau tsis zoo rau cov khoom siv ntawm cov hlau.
Mechanical Properties ntawm S355JR
S355JR steel kav muaj cov khoom siv zoo heev, feem ntau suav nrog:
Yield Strength: Ntau dua lossis sib npaug rau 355MPa (thickness Tsawg dua lossis sib npaug rau 16mm), maj mam txo nrog nce thickness. Piv txwv li, ntawm lub thickness ntawm 16 ~ 40mm, lub zog tawm los yog ntau dua los yog sib npaug rau 345MPa.
Tensile zog: 470 ~ 630MPa, me ntsis txawv nrog thickness.
Elongation: Ntau dua lossis sib npaug li 22% (tus nqi tsawg kawg rau cov thicknesses ntawm 3 ~ 40mm), elongation txo nrog nce thickness.
Impact Toughness: Nyob rau hauv chav tsev kub (20 degree), lub longitudinal cuam tshuam lub zog yog ntau dua los yog sib npaug rau 27J, txhais tau hais tias nws muaj peev xwm tuav tau zoo zoo thiab kev ua tau zoo nyob rau hauv kev cuam tshuam los yog kev co, thiab nws tsis yog ib tug nkig puas. Nws yog tshwj xeeb tshaj yog haum rau daim ntaub ntawv uas yuav dais dynamic loads, xws li txuas hniav thiab mechanical Cheebtsam.
S355JR Daim Ntawv Thov Cheeb Tsam
S355JR steel kav, nrog lawv lub zog siab, zoo toughness, weldability, corrosion kuj, thiab hnav tsis kam, muaj kev siv dav hauv ntau qhov chaw:
- Kev tsim kho: Feem ntau siv rau hauv kab, kab, kab, pem teb slabs, thav duab, thiab cov phab ntsa ntawm siab -nce vaj tse, cov nroj tsuag muaj, chaw ntau pob, thiab lwm yam vaj tse. Nws lub zog siab thiab zoo weldability ua rau cov tsev no ruaj khov thiab nyab xeeb dua.
- Kev Tsim Kho Choj: Feem ntau siv rau hauv lub ntsiab thauj khoom -cov khoom siv ntawm cov choj, xws li cov kab teeb ci thiab cov spans. Nws lub zog siab thiab kev ua haujlwm zoo ua rau nws yog qhov kev xaiv zoo tshaj plaws, muaj peev xwm tiv taus ntuj tsim xws li av qeeg thiab cua.
- Machinery: Siv los tsim ntau yam khoom siv tshuab thiab cov khoom siv, xws li cov khoom tseem ceeb ntawm cov tsheb laij teb, cov qoob loo, cov tshuab ua liaj ua teb, thiab lwm yam khoom siv. Nws lub zog siab thiab zoo toughness ua rau cov khoom siv no ruaj khov thiab ua haujlwm tau zoo.
- Kev Lag Luam Marine: Lawv tuaj yeem siv los tsim cov khoom siv xws li cov hulls, decks, bulkheads, thiab trusses. Ua tau raws li qhov yuav tsum tau ua kom muaj zog thiab ruaj khov, lawv tuaj yeem ua haujlwm ruaj khov rau lub sijhawm ntev hauv thaj chaw hnyav marine.
- Lwm cov teb: Lawv kuj tuaj yeem siv rau ntau yam xws li kev tsim tsheb, khoom siv tshuaj, cov kav dej, thiab cov cua ntsawj ntshab, ua kom pom lawv qhov kev siv dav.
S355JR Hollow seem Hoobkas
