Hauv kev lag luam hluav taws xob thiab tshuaj lom neeg, tshwj xeeb tshaj yog nyob rau hauv liquefied natural gas (LNG) cia thiab thauj cov dej num, xaiv cov khoom siv nyob rau hauv ultra- qhov kub thiab txias tsis tshua muaj kev txhawj xeeb rau cov engineers thiab cov neeg ua haujlwm yuav khoom.
ASME SA353 steel phajyog a9% nickel alloy steel phaj rau cryogenic siab hlab ntshatsim tshwj xeeb los daws qhov kev nyuaj no. Tsim nyob rau hauv raws li ASME SA-353 / SA-353M tus qauv, cov hlau phaj yuav tsum tau ua raws li qhov kev ntsuam xyuas ntawm-195 degree, ua ib qho tseem ceeb ntawm cov khoom siv uas tswj tau zoo heev toughness txawm nyob rau hauv cov kua nitrogen kub ntawm -196 degree.
Siv tau Standard ntawmASME SA-353/SA-353M
SA353 steel phaj ua raws liASME SA-353/SA-353M, uas yog tag nrho sib npaug rau ASTM A353 / A353M.
Qhov sib txawv tseem ceeb ntawm SA353 thiab ASTM A553 (ob leeg 9% nickel steels) nyob hauv cov txheej txheem kho cua sov:
SWB 353:Ob npaug -Normalized thiab Tempered (N + N + T)
ASTM A553 Cov Lus Qhia:Quenched thiab Tempered (Q + T)
SA353 steel Thaum tshav kub kub kho txheej txheem
SA353 steel phaj yog nkag rau hauvOb npaug -Normalized thiab Tempered (N + N + T)los yogNormalized thiab Tempered (N + T)mob. Cov txheej txheem kev kho cua sov txheem yog raws li nram no:
Ua ntej Normalizing
Kub lub phaj steel uniformly rau900℃± 15 degree. Lub sijhawm tuav yuav tsum tsis pub tsawg dua 1 teev ib nti (2.4 min / mm) ntawm phaj tuab, nrog lub sijhawm tuav tsawg kawg yog 15 feeb, tom qab ntawd cua txias.
Thib ob Normalizing
Reheat steel phaj uniformly rau790℃± 15 degreenrog tib lub sijhawm tuav, ces cua txias.
Tempering
Reheat steel phaj uniformly rau565-605 degreenrog rau tib qhov yuav tsum tau tuav, ua raws li huab cua txias lossis dej quenching ntawm qhov cua txias tsis pub tsawg tshaj 165℃/ h.
Lus Cim Tseem Ceeb
Yog tias qhov kub sib sau ua tiav nyob rau hauv qhov kub ntawm 900-955 degree, thawj kauj ruam normalizing yuav raug tshem tawm. Tsis tas li ntawd, SA353 cov khoom siv tau yooj yim magnetized. Yog tias cov hlau nplaum seem muaj teeb meem rau kev tsim khoom lossis kev pabcuam tom ntej, cov cuab yeej sib nqus yuav tsum raug zam thaum tom qab- kev kho cua sov.
Tshuaj muaj pes tsawg leeg ntawm SA353 steel phaj
Los ntawm kev ntxiv8.5% ~ 9.5% npib tsib xee (Ni), SA353 steel phaj ho txhim kho qhov kev cuam tshuam cryogenic toughness ntawm ferritic steel nyob rau hauv ultra- tsis tshua muaj kub kub.Cov hlau phaj yuav tsum yogtag nrho cov hlauthiab ua tau raws li qhov yuav tsum tau ua ntawm nplua austenite grain loj.
SA353 Chemical Composition (Kev Ntsuas Kub, wt%)
| Lub ntsiab | Kev xav tau |
|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.13 |
| Manganese (Mn) | Tsawg dua los yog sib npaug li 0.90 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.015 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.015 |
| Silicon (Si) | 0.15-0.40 |
| Nickel (Ni) | 8.50-9.50 |
Mechanical Properties ntawm SA353 steel phaj
Cov cuab yeej tensile uas yuav tsum tau muaj ntawm SA353 steel phaj qhia txog nws tus nqi tseem ceeb raws li cov khoom siv hauv cov hlab ntsha cryogenic.2 nti (50mm), feem ntau txiav txim siab los ntawm cov khoom muaj peev xwm ua tau raws li qhov kev ua tau zoo ntawm kev siv tshuab.
SA353 Tensile Properties
| Khoom | Kev xav tau |
|---|---|
| Tensile zog (Rm) | 690-825 MPa |
| Yield zog (Rp0.2) | Ntau dua lossis sib npaug li 515 MPa |
| Elongation (A) | Ntau dua lossis sib npaug li 18% (ib A20 / A20M) |
Daim Ntawv Qhia Qib Ntiaj Teb Sib npaug
SA353 muaj cov qib sib npaug hauv cov txheej txheem thoob ntiaj teb loj. Kev nkag siab txog qhov sib npaug no pab txhawb kev hloov khoom siv thiab kev yuav khoom thoob ntiaj teb hla cov lej sib txawv.
| Standard System | Qib sib npaug | Lus hais |
|---|---|---|
| ASME (USA) | SIB-353 | Ob chav normalized & tempered, zoo tib yam rau ASTM A353 |
| ASTM (USA) | A353 | Siab sib npaug rau SA353 |
| Tuam Tshoj GB 24510 | 06Ni9DR, 9Ni490, 9Ni590A, 9Ni590B | Tsim los ntawm Wuyang, TISCO, Nansteel, thiab lwm yam. |
| TS EN 10028-4 Europe | X7Ni9, X8Ni9+NT640, X8Ni9+QT680 | European txheem rau cryogenic siab hlab ntsha steel |
| Nyiv JIS G3127 | 9 N520, SL9N590 | Japanese cryogenic siab hlab ntsha steel |
| Lub teb chaws Yelemees DIN 17280 | X8Ni9 / 1.5662 | German Standard qib |
Kev siv tseem ceeb ntawm SA353 steel phaj
Tshwj xeeb tsim los rau qis-kub welded siab hlab ntsha, SA353 steel phaj tuaj yeem siv rau qhov ntsuas kub tsawg kawg nkaus.-196 degreethiab nyob qib ntawm qhov zoo tshaj plaws ferritic steels rau toughness nyob rau hauv cov kev pab cuam cryogenic.
Main daim ntawv thov scenarios:
LNG Cia Tank & Carrier Nkoj
LNG kub yog nyob ib ncig ntawm -162 degree. Sab hauv lub tank liner ua los ntawm SA353 yog cov qauv tseem ceeb ntawm LNG txais cov terminals thiab cov nkoj thauj khoom. Nrog kev loj hlob tsis tu ncua ntawm kev lag luam thoob ntiaj teb LNG, kev lag luam xav tau rau SA353 steel nce tsis tu ncua.
Cryogenic Gas Cia & Tsheb thauj mus los
Rau cov pa oxygen, kua nitrogen, kua argon thiab lwm cov roj cua cryogenic nrog rau qhov kub thiab txias hauv qab -196 degree, yuav tsum muaj qhov kub tsis tshua muaj zog.
Ethylene Nroj Tsuag & Petrochemical Tsawg- Cov Khoom Kub Kub
Cryogenic sib cais thiab cia cov txheej txheem nyob rau hauv petrochemical tej yaam num kuj yuav tsum tau no qib ntawm tsawg- kub steel phaj.
Lwm yam Ultra-Tsuas yog cov qauv tsim qauv
Xws li cov kav dej cryogenic, li qub thiab cov khoom txhawb nqa.
SA353 steel ntasiab nickel cov ntsiab lus, siab purity, siab zog, zoo heev cryogenic cuam tshuam toughness thiab zoo weldability, ua rau nws yog ib qho tseem ceeb irreplaceable khoom rau huab cua cryogenic ua hauj lwm tej yam kev mob.
Nrhiav kev ntseeg siabSA353 steel phajrau koj qhov project cryogenic?
Txawm hais tias rau LNG tank sab hauv plhaub, cov kua dej oxygen cia tso tsheb hlau luam, lossis cov kav dej cryogenic, xaiv cov khoom tsim nyog yog thawj kauj ruam rau kev nyab xeeb.
Peb muab ib qho - nres cov khoom thiab tag nrho cov ntaub ntawv qhia txog ASME SA353 (06Ni9DR) steel phaj:
✅ Ua kom tiav-196℃cuam tshuam cov ntawv ceeb toomthiab thawj daim ntawv pov thawj zeb
✅Delivery hauvOb chav Normalized + Temperedmob, ua raws li SA-353 / SA-353M tus qauv
✅ Kev cai txiav, dov thiab kev daws teeb meem muaj; xa ceev ceev rau thickness mus txog 50mm
👇 NyemTiv tauj pebhauv qab no kom tau txais cov khoom muaj tam sim no thiab cov nqi tiag tiag -lub sijhawm rau koj cov lus qhia tshwj xeeb. Peb cov engineers muabdawb kev xaiv cov khoom siv txhawb nqarau koj qhov project.
FAQ
Kev sib raug zoo ntawm SA353 thiab ASTM A353 yog dab tsi?
Lawv yogzoo ib yam nkaus. ASME SA-353 / SA-353M thiab ASTM A353 / A353M sib koom cov kev xav tau zoo ib yam, koom nrog rau cov txheej txheem ntawm ASME thiab ASTM. Lawv muaj peev xwm sib pauv tau hauv kev yuav khoom thiab siv tau.
Dab tsi yog qhov txawv ntawm SA353 thiab ASTM A553? Yuav xaiv li cas?
Ob leeg yog 9% npib tsib xee cryogenic steels tab sis txawv hauv kev kho cua sov: SA353 txais yuav ob chav normalizing thiab tempered txheej txheem, thaum ASTM A553 siv quenched thiab tempered txheej txheem.A553 tuaj yeem ua tiav qib siab zog ntawm cov cua txias dua. Hauv kev xaiv engineering, kev txiav txim siab dav dav yuav tsum tau muab rau tsim qib siab, phaj thickness, kev tsim khoom thiab qhov project.
SA353 puas tuaj yeem hloov stainless hlau rau LNG cia tank?
Yog lawm. Txij li thaum xyoo 1960, 9% Ni hlau yog cov khoom tseem ceeb rau loj - nplai LNG tso tsheb hlau luam.Piv nrog austenitic stainless hlau thiab aluminium alloy, 9% Ni steel nta qis thermal expansion coefficient, siab zog thiab kev ua haujlwm zoo dua, thiab tau dhau los ua qhov kev xaiv tseem ceeb hauv kev lag luam.
Dab tsi yog qhov thickness txwv ntawm SA353 steel phaj?
Raws li txoj cai, qhov siab tshaj plaws thickness tsuas yog txwv los ntawm cov khoom muaj peev xwm ua tau raws li cov cuab yeej cuab tam. Nyob rau hauv qhov tseeb ntau lawm, feem ntau steel mills txwv lub siab tshaj plaws thickness rau2 nti (50mm). Thickness ntawm qhov ntau yam no yuav tsum muaj kev sib tham sib cais thiab kev pom zoo nrog cov chaw tsim khoom.
