SA516 Qib 70yog cov pa roj carbon steel phaj specification dav siv hauv cov hlab ntsha siab. Nws yog standardized los ntawm ASME, featuring zoo toughness, weldability thiab siab -kub tsis kam, haum rau qis mus rau nruab nrab kub kev pab cuam ib puag ncig.
Kev xav tau tshuaj
| Cov ntsiab lus | TIAB SA 516 Gr 60 (Qib 415) | TIAB SA 516 Gr 65 (Qib 450) | TIAB SA 516 Gr 70 (Qib 485) |
|---|---|---|---|
| Cov pa roj carbon, max Composition% | |||
| 1/2 nti (12.5 mm) thiab qis dua | 0.21 | 0.24 | 0.27 |
| Tshaj 1/2 txog 2 nti (12.5 txog 50 mm), incl | 0.23 | 0.26 | 0.28 |
| Tshaj 2 mus rau 4 nti (50 mus rau 100 mm), incl | 0.25 | 0.28 | 0.30 |
| Tshaj 4 mus rau 8 nyob rau hauv. (100 mus rau 200 mm), incl | 0.27 | 0.29 | 0.31 |
| Tshaj 8 nti (200mm) | 0.27 | 0.29 | 0.31 |
| Manganese, max | |||
| 1/2 (12.5) thiab hauv qab: | |||
| Kev ntsuas kub | 0.60-0.90 | 0.85-1.20 | 0.85-1.20 |
| Kev tshuaj xyuas cov khoom | 0.55-0.98 | 0.79-1.30 | 0.79-1.30 |
| Tshaj 1/2 nyob rau hauv (12.5) | |||
| Kev ntsuas kub | 0.85-1.20 | 0.85-1.20 | 0.85-1.20 |
| Kev tshuaj xyuas cov khoom | 0.79-1.30 | 0.79-1.30 | 0.79-1.30 |
| Phosphorus, max | 0.025 | 0.025 | 0.025 |
| Sulfur, max | 0.025 | 0.025 | 0.025 |
| Silicon | |||
| Kev ntsuas kub | 0.15-0.40 | 0.15-0.40 | 0.15-0.40 |
| Kev tshuaj xyuas cov khoom | 0.13-0.45 | 0.13-0.45 | 0.13-0.45 |
Tensile Requirements
| TIAB SA 516 Gr 60 (Qib 415) | TIAB SA 516 Gr 65 (Qib 450) | TIAB SA 516 Gr 70 (Qib 485) | |
|---|---|---|---|
| Tensile zog, ksi (MPa) | 60-80(415-550) | 65-85(450-585) | 70-90(485-620) |
| Yield zog, min.B ksi (MPa) | 32(220) | 35(240) | 38(260) |
| Elongation hauv 8 nti (200 mm), min, % | 21 | 19 | 17 |
| Elongation hauv 2 nti (50 mm), min, % | 25 | 23 | 21 |
Cov ntawv thov tseem ceeb
Cov nkoj siab hauv Petrochemical Kev Lag Luam: Raws li cov khoom tseem ceeb rau qis -kub thiab nruab nrab- cov hlab ntsha kub siab, SA516 Qib 70 yog siv dav hauv cov roj refining, chemical synthesis, thiab natural gas processing. Nws yog qhov tsim nyog rau kev tsim cov reactors, cov khoom sib cais, cov tso tsheb hlau luam, thiab cov khoom siv hluav taws xob sib hloov uas dais nruab nrab siab (feem ntau 10-30 MPa) thiab ua haujlwm ntawm -30 ° C txog 450 ° C, tiv thaiv corrosion los ntawm lub teeb hydrocarbons, chav, thiab cov acids tsis muaj zog.
Cov cuab yeej tsim hluav taws xob: Nws yog siv rau hauv thermal fais fab nroj tsuag thiab nuclear fais fab auxiliary systems. Tshwj xeeb tshaj yog, nws yog siv los ua boiler nruas, header kav, thiab siab pipelines rau lwm yam circuits, uas yuav tsum tau tiv taus siab -kub kub (qis dua 400 ° C) thiab ruaj khov siab, ua kom muaj kev ruaj ntseg ntawm lub zog tsim hluav taws xob voj voog.
Roj thiab roj tsheb thauj thiab khaws cia: Rau onshore thiab offshore roj thiab roj pipelines, cia tso tsheb hlau luam, thiab hloov chaw nres tsheb, SA516 Qib 70 yog ib tug zoo tagnrho cov ntaub ntawv vim nws zoo weldability thiab cuam tshuam toughness. Nws hloov mus rau qhov hnyav sab nraum zoov, nrog rau qhov kub thiab txias thiab corrosion me me los ntawm cov av lossis dej hiav txwv vapor.
Cov khoom siv tshuaj thiab tshuaj: Nws yog siv los tsim cov cuab yeej siv los tuav cov khoom tsis muaj zog corrosive, xws li cov khoom siv tshuaj, cov tank sib tov, thiab cov kav xa dej hauv kev lag luam tshuaj, zaub mov, thiab tshuaj zoo. Nws cov khoom siv kho tshuab zoo heev kom ntseeg tau qhov nruj thiab ruaj khov ntawm cov khoom siv thaum lub sijhawm ua haujlwm ntev -.
Boiler thiab Heat Exchanger Cheebtsam: Hauv kev lag luam boilers thiab plhaub - thiab - raj kub exchangers, nws yog siv los ua plhaub, raj ntawv, thiab baffles. Nws tuaj yeem tiv taus qhov kev ntxhov siab hloov pauv los ntawm kev hloov pauv kub thiab nruab nrab ntws, zam cov khoom qaug zog thiab to.
Cov Cai Thov
Qhov kub thiab txias: Nws yog tsim rau qis-kub mus rau nruab nrab- qhov chaw ua haujlwm kub, nrog qhov kev pab cuam yam tsawg kawg nkaus ntawm -30 ° C thiab qhov siab tshaj plaws ua haujlwm kub ntawm 450 ° C. Tshaj qhov ntau yam no yuav txo nws qhov toughness thiab lub zog.
Kev xav tau siab: Nws yog tsim los rau nruab nrab - cov cuab yeej siv siab, nrog qhov siab tshaj plaws ua haujlwm siab (MAWP) txog li 30 MPa. Lub peev xwm tshwj xeeb muaj peev xwm nyob ntawm qhov tuab ntawm cov khoom siv thiab kev ua haujlwm kub, uas yuav tsum tau suav thiab txheeb xyuas raws li cov qauv tsim nyog (xws li ASME BPVC).
Nruab nrab Compatibility: Nws yog sib xws nrog cov uas tsis yog - muaj zog corrosive media, xws li dej, chav, lub teeb hydrocarbons, thiab nruab nrab daws. Nws tsis haum rau ib puag ncig uas muaj zog acids, muaj zog alkalis, lossis chloride ion corrosion (xws li dej hiav txwv immersion), tshwj tsis yog tias muaj kev tiv thaiv kev tiv thaiv - kev kho corrosion.
Vuam thiab txheej txheem txheej txheem: Vuam yuav tsum tau ua los ntawm cov neeg siv khoom tsim nyog siv cov txheej txheem tsim nyog (xws li SMAW, GTAW). Preheating (100-150 ° C) thiab kev kho cua sov tom qab vuam (PWHT) yuav tsum tau tshem tawm cov kev ntxhov siab ntawm vuam thiab tsis txhob tawg. Txiav thiab sib sau yuav tsum tau ua nyob rau hauv chav tsev kub kom tiv thaiv cov khoom brittleness.
Zoo thiab Standard Ua Raws Cai: Cov khoom siv yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm ASME SA516 / SA516M tus qauv, suav nrog cov tshuaj muaj pes tsawg leeg (C ≤ 0.30%, Mn=1.00-1.60%, thiab lwm yam) thiab cov khoom siv kho tshuab (tensile zog=485-655 MPa, yield zog ≥ 260 MPa). Daim ntawv pov thawj kev tshuaj xyuas lub Hoobkas thiab cov ntawv ceeb toom tsis yog -kev ntsuas kev puas tsuaj (NDT) yuav tsum tau ua ua ntej thov.
Vim li cas thiaj xaiv peb:
Koj tuaj yeem tau txais cov khoom zoo meej raws li qhov koj xav tau ntawm tus nqi tsawg kawg nkaus.
Peb kuj muab Reworks, FOB, CFR, CIF, thiab qhov rooj rau qhov rooj tus nqi xa khoom. Peb xav kom koj ua deal rau shipping uas yuav zoo heev.
Cov ntaub ntawv uas peb muab yog muaj tseeb tiag, txoj cai los ntawm raw cov ntaub ntawv xeem daim ntawv pov thawj mus rau qhov kawg dimensional nqe lus.
Peb lav muab cov lus teb tsis pub dhau 24 teev (feem ntau hauv tib lub sijhawm)
Koj tuaj yeem tau txais cov khoom hloov pauv, zeb xa khoom nrog txo lub sijhawm tsim khoom.
Peb tau mob siab rau peb cov neeg siv khoom. Yog tias nws yuav tsis tuaj yeem ua tau raws li koj cov kev xav tau tom qab kuaj xyuas tag nrho cov kev xaiv, peb yuav tsis ntxias koj los ntawm kev cog lus tsis tseeb uas yuav tsim kev sib raug zoo rau cov neeg siv khoom.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
Dab tsi yog qhov yuav tsum tau elongation ntawm SA516 Qib 70?
SA516 Qib 70 yuav tsum muaj qhov tsawg kawg nkaus elongation ntawm 21% hauv 2-nti (50.8 mm) ntsuas qhov ntev. Qhov siab elongation no qhia tau hais tias zoo ductility, tso cai rau cov khoom deform plastically ua ntej tawg.
Qhov kev xeem cuam tshuam dab tsi yog xav tau rau SA516 Qib 70?
SA516 Qib 70 yuav tsum tau Charpy V-notch (CVN) kev ntsuam xyuas. Qhov tsawg kawg nkaus kev cuam tshuam lub zog yog feem ntau 27 J (20 ft-lb) ntawm qhov kev pab cuam qhov kub thiab txias, ua kom cov khoom muaj zog txaus los tiv thaiv cov pob txha tawg.
SA516 Qib 70 puas tuaj yeem siv tau rau hauv cov ntawv thov kub tsawg -?
Yog lawm, SA516 Qib 70 tuaj yeem siv rau hauv qis - daim ntawv thov kub mus rau -30 ° C (-22 ° F). Rau qhov ntsuas kub qis dua, cov qib hloov kho (piv txwv li, SA516 Gr. 70 N) nrog kev txhim kho qis-kub toughness muaj.
Dab tsi yog qhov txawv ntawm SA516 Qib 70 thiab SA516 Qib 60?
Qhov sib txawv tseem ceeb yog lub zog txhua yam: SA516 Gr. 70 muaj zog tensile ntau dua (485 MPa vs . 415 MPa) thiab tawm los (260 MPa vs . 205 MPa) muaj zog dua Gr. 60. Ob leeg muaj cov tshuaj sib xws thiab kev sib txuas.
Puas yog SA516 Qib 70 yog carbon steel lossis hlau alloy?
SA516 Qib 70 yog carbon hlau, tsis yog hlau alloy. Nws muaj feem ntau carbon thiab manganese ua cov ntsiab lus alloying, tsis muaj chromium, npib tsib xee, lossis lwm yam alloying ntsiab.
Dab tsi thickness ranges muaj rau SA516 Qib 70 daim hlau?
SA516 Qib 70 daim hlau muaj nyob rau hauv thicknesses ntawm 1.5 hli mus rau 200 hli (0.06 rau 7.87 nyob rau hauv), nyob ntawm seb cov chaw tsim tshuaj paus thiab daim ntawv thov yuav tsum tau. Cov phaj tuab yuav xav tau kev ua haujlwm tshwj xeeb.
Cov kev kho saum npoo dab tsi yog siv rau SA516 Qib 70 daim hlau?
Cov kev kho mob saum npoo muaj xws li pickling thiab oiling, uas tshem tawm oxide nplai thiab xeb, thiab muab kev tiv thaiv corrosion ib ntus. Lwm yam kev kho mob xws li sandblasting los yog pleev xim rau tej zaum yuav raug siv rau cov kev siv tshwj xeeb.
SA516 Qib 70 puas tuaj yeem ua tau yooj yim?
Yog lawm, SA516 Qib 70 tuaj yeem ua tau yooj yim siv cov txheej txheem machining, xws li tig, milling, drilling, thiab sib tsoo. Nws qhov nruab nrab hardness thiab zoo ductility ua rau nws haum rau ntau yam machining kev ua haujlwm.
Dab tsi yog qhov hardness ntau ntawm SA516 Qib 70?
Qhov sib txawv ntawm Brinell hardness (HB) ntau ntawm SA516 Qib 70 yog 137 txog 187. Qhov nruab nrab hardness no sib npaug zog thiab ductility, ua kom zoo machinability thiab weldability.
Dab tsi yog kev lag luam feem ntau siv SA516 Qib 70?
Cov kev lag luam muaj xws li roj thiab roj, petrochemical, hluav taws xob tsim hluav taws xob, kev ua tshuaj, thiab tshuaj. Nws yog siv los tsim cov hlab ntsha siab, boilers, cia tso tsheb hlau luam, thiab tshav kub exchangers.