SA 285 gr. C (ASTM A285 Qib C) yog cov pa roj carbon steel phaj rau cov hlab ntsha siab, paub txog nws qhov zoo weldability, kub tsis kam, thiab tsim nyog rau cov ntawv thov qis rau nruab nrab xws li boilers, tso tsheb hlau luam, thiab cov cua sov.
Tshuaj muaj pes tsawg leeg:
| C | Mn | P | S | Si | Cr | Cu | Ni | Mo | Nb | Ti |
| % | % | % | % | % | % | % | % | % | % | % |
| 0.16 | 0.40-1.20 | 0.03 | 0.03 | 0.35 | 0.30 | 0.30 | 0.30 | 0.08 | 0.01 | 0.03 |
Lub cev muaj zog:
| Qib | Tensile zog, kis [MPa] | Yield zog, min, kis [MPa] | Elongation hauv qab [50mm], min, % |
| SA 285 gr C | 380-515 | 205 | 27 |
EQUIVALENT GRADES:
| ASTM/ASME | ME British Standard | European Norm | Nyiv | Spain |
| A/SA285 - Qib C | 161 Gr.360/164 Gr.360 | P235GH | SPV 24 | A 37 RCI |
Daim ntawv thov
Lub Nkoj Siab & Tanks:
Qhov zoo tshaj plaws rau qis- mus rau nruab nrab- lub tank siab, lub tank cia, thiab qis - cov nkoj siab.
Boilers:
Siv nyob rau hauv kev tsim kho ntawm chaw nres tsheb thiab lub hau boilers.
Thaum tshav kub kub Exchangers:
Haum rau exchangers thiab cua sov.
Khoom siv:
Pom muaj nyob rau hauv tshuaj lom neeg, petrochemical, roj & roj, thiab cov cuab yeej tsim hluav taws xob.
General Fabrication:
Siv nyob rau hauv shipbuilding, dej kho, thiab lwm yam engineering tej yaam num.
Qhov zoo
Weldability zoo:
Yooj yim welded siv cov txheej txheem txheej txheem, simplifying fabrication.
Zoo heev Formability:
Yuav ua tau zoo li tus thiab tsim rau hauv ntau yam khoom.
Corrosion Resistance:
Muaj kev tiv thaiv zoo rau pitting, crevice, thiab kev xeb dav dav, nrog rau kev tiv thaiv kev ntxhov siab corrosion tawg.
Tus nqi -Cov:
Feem ntau siv nyiaj ntau dua - lub zog steels, ua rau nws haum rau ntau daim ntawv thov.
Haum rau Tsawg / Nruab Nrab Temps:
Ua tau zoo nyob rau hauv qhov kub thiab txias ib puag ncig.
Txuj kev ua raws cai:
Ua tau raws li ASTM A285 / ASME cov cai rau kev ua tau zoo ib yam.
Thov ib tug kws tshaj lij hais rau SA 285 Gr. C los ntawm GNEE Steel.
Yam khoom siv twg yog SA 285 Gr.C?
SA 285 Gr.C yog cov khoom siv carbon steel phaj tsim los siv rau hauv cov hlab ntsha siab. Nws tau them los ntawm ASME SA-285 thiab sib npaug rau ASTM A285 Qib C, npaj rau kev siv qis rau nruab nrab thiab kub.
Dab tsi yog cov yam ntxwv tseem ceeb uas ua rau SA 285 Gr.C haum rau cov hlab ntsha siab?
Nws cov txiaj ntsig tseem ceeb suav nrog kev weldability zoo, zoo formability, nruab nrab lub zog, thiab tus nqi qis, uas ua rau nws yog ib qho kev xaiv zoo rau cov kev pabcuam uas tsis yog - hnyav hnyav.
Hauv kev lag luam thiab cov khoom lag luam twg yog SA 285 Gr.C nquag siv?
Nws yog dav siv nyob rau hauv cov tshuaj, petrochemical, thiab kev lag luam kev lag luam dav dav rau cov khoom xws li cov hlab ntsha siab, cov tso tsheb hlau luam, cov khoom siv hluav taws xob, thiab ntau yam khoom siv.
SA 285 Gr.C puas tau yooj yim welded, thiab dab tsi yuav tsum tau sau tseg?
Yog lawm, SA 285 Gr.C muaj weldability zoo thiab tuaj yeem welded los ntawm ntau txoj kev. Txawm li cas los xij, rau cov phaj tuab lossis cov pob qij txha nruj heev, preheating kom zoo thiab/los yog tom qab-weld heat treatment tej zaum yuav tsim nyog kom tsis txhob tawg.
Kev kho cua sov dab tsi yog SA 285 Gr.C feem ntau raug rau?
SA 285 Gr.C feem ntau muab rau hauv qhov ua - dov los yog normalized mob. Kev kho cua sov tsis tas yuav tsum tau ua, tab sis kev kho cua sov tuaj yeem siv tau nyob ntawm qhov tuab, vuam, thiab kev xav txog kev tsim.
Dab tsi yog qhov sib txawv ntawm lub zog ntawm SA 285 Gr.C thiab qib qis (Gr.A, Gr.B)?
SA 285 Gr.C muaj qhov tsawg kawg nkaus uas teev lub zog ntawm peb qib. Gr.A muaj lub zog qis tshaj plaws, Gr.B yog nyob rau hauv nruab nrab, thiab Gr.C raug xaiv thaum xav tau lub zog siab dua thaum tuav cov formability zoo thiab weldability.
Thaum twg ib tug yuav xaiv SA 387 tshaj SA 285 Gr.C?
SA 387 (Cr-Mo) steels yog nyiam rau siab -kub thiab hydrogen- kev pab cuam, xws li hauv refineries thiab fais fab nroj tsuag. SA 285 Gr.C, ua cov pa roj carbon monoxide, yog qhov tsim nyog rau qhov kub thiab txias tsawg dua.
SA 285 Gr.C ua haujlwm li cas hauv qhov qis- qhov kub thiab txias piv rau qib A516?
SA 285 Gr.C tsis ua kom zoo rau qis- kub toughness. A516 qib, xws li A516 Gr.70, tshwj xeeb yog tsim los kom muaj kev cuam tshuam zoo dua ntawm qhov kub thiab txias, ua rau lawv tsim nyog rau kev siv txias - kev pabcuam.
SA 285 Gr.C tiv thaiv corrosion zoo li cas?
SA 285 Gr.C tsuas muaj kev tiv thaiv corrosion tsis zoo thiab feem ntau yog siv nrog cov kua dej tsis zoo los yog tsis zoo corrosive. Nyob rau hauv ib puag ncig nruj dua, cov txheej tiv thaiv, hauv ob sab phlu, lossis siab dua -alloy steels feem ntau xav tau.
Dab tsi yuav tsum tau xav txog thaum xaiv SA 285 Gr.C rau ib qhov project?
Cov yam tseem ceeb muaj xws li kev khiav hauj lwm siab thiab qhov kub thiab txias, qhov xwm txheej ntawm cov kua dej ua haujlwm, yuav tsum muaj zog (tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias), fabrication thiab vuam yuav tsum, thiab tag nrho cov nqi. SA 285 Gr.C yog qhov kev xaiv zoo thaum ua haujlwm nruab nrab thiab tus nqi -kev ua tau zoo yog qhov tseem ceeb.