A662gbyog lub siab -zoo qis-carbon, siab- lub zog siab lub nkoj steel qib tau txhais los ntawm American Society for Testing and Materials (ASTM) raws li tus qauv ASTM A662/A662M. Nws yog tsim tshwj xeeb thiab siv dav hauv kev tsim cov khoom qis -kub siab cov hlab ntsha, cov tso tsheb hlau luam, thiab cov khoom siv tseem ceeb thoob plaws kev lag luam uas qhov kev tiv thaiv txias yog qhov tseem ceeb tshaj plaws. Cov qib steel no khav theeb zoo heev uas tsis tshua muaj - kub toughness, txhim khu kev qha weldability, thiab ruaj khov txhua yam khoom, txawm tias thaum ua hauj lwm nyob rau hauv hnyav low- kub ua hauj lwm ib puag ncig.
Tshuaj muaj pes tsawg leeg
|
Qib / Khoom siv |
Element |
Composition(Max-A, Min-I) |
|
A662 Qib B / A662 GrB |
C |
A:0.19 |
|
Mn |
0.85-1.50 |
|
|
Si |
0.15-0.40 |
|
|
P |
0.035 |
|
|
S |
0.035 |
Mechanical Properties
|
Qib / Khoom siv |
Tensile Test |
MPa |
|
A662 Qib B / A662 GrB |
Tensile zog |
450-585 |
|
Yield zog |
275 |
|
|
Elongation |
20% |
|
|
Impact Test (yog tias muaj) |
daim ntawv thov
1. Tsawg-Tsuas Kub Siab Nkoj
Thawj daim ntawv thov rau A662GrB yog tsim los ntawm siab- cov hlab ntsha siab siab tsim los ua haujlwm hauv sub- xoom tej yam kev mob.
Kev Ua Haujlwm Ntau Yam: Nws tuav cov txheej txheem kev ncaj ncees ntawm qhov kub li qis li -40℃rau -60 degree, tiv thaiv kev hloov pauv ntawm cov ductile-rau-nkig uas ua rau tsis ua haujlwm hauv cov qauv carbon steels.
Kev Siv Khoom Siv: Nws yog feem ntau siv rau cov phaj boiler thiab cov khoom siv hluav taws xob sib txawv hauv cov roj thiab cov roj ua haujlwm uas xav tau kev ua haujlwm zoo ib yam raws li qhov sib txawv thermal loads.
Kev Ua Raws Cai: Lub nkoj tsim nrog A662GrB feem ntau ua tau raws li ASME Tshooj VIII cov qauv rau kev ua haujlwm nyab xeeb nyob rau sab hauv lossis sab nraud siab tshaj 15 psig.
2. Tshwj xeeb cia Tank
A662GrB yog siv rau cov thawv ntim khoom lag luam uas khaws cov khoom tsis muaj zog uas xav tau qhov chaw ruaj khov, muaj zog, lossis cov tub yees.
Petrochemical Storage: Siv rau lub tank kheej kheej thiab ntsug khaws cia Liquefied Petroleum Gas (LPG), Compressed Natural Gas (CNG), thiab lwm yam petrochemicals volatile.
Cov Khoom Siv Hluav Taws Xob: Nws yog cov khoom siv zoo tshaj plaws rau khaws cia boiler feedwater, condensate, thiab roj thaum muaj xwm ceev hauv cov chaw tsim hluav taws xob.
Cov qauv: Cov tso tsheb hlau luam no feem ntau tsim los rau API 620 (loj, welded, qis- cov tso tsheb hlau luam siab) thiab API 650 (welded steel tank rau roj cia) specifications.
3. Zog thiab Industrial Infrastructure
Tshaj li kev tswj hwm yooj yim, A662GrB txhawb nqa cov txheej txheem tseem ceeb uas yuav tsum tiv taus huab cua ib puag ncig thiab kev ntxhov siab.
Offshore thiab Polar Engineering: Vim nws cov ntsiab lus zoo manganese thiab nplua - cov qauv nplej, nws yog siv rau cov khoom siv hauv cov dej txias - cheeb tsam marine engineering, xws li offshore platforms thiab jack- nce rigs.
Hydrogen Infrastructure: Nrog kev nce siab ntawm lub zog ruaj khov hauv xyoo 2026, qis- alloy steels zoo li A662GrB tau nce ntxiv rau cov nkoj hauv av ntawm Hydrogen Refueling Stations (HRS) vim lawv qhov sib npaug ntawm tensile lub zog thiab tus nqi, muab lawv mus rau kev sim qaug zog rau hydrogen compatibility.
Mechanical Integrity: Nws yog siv rau kev lag luam machinery thiab choj kev tsim kho qhov twg siab yield zog (feem ntau 275 MPa) thiab weldability yuav tsum tau rau hnyav -lub luag hauj lwm load- bearing.
daim ntawv thov tej yam kev mob
Kev Pab Cuam Kub Kub: A662 GrB feem ntau yog siv rau hauv ib puag ncig xws li ambient kub mus txog kwv yees li-45 degree. Nws tsis yog tsim rau cov kev pabcuam cryogenic hauv qab no, tab sis nws muab kev ruaj ntseg toughness rau ntau qhov kev ua haujlwm qis thiab kev cia khoom.
Kev xav tau siab: Nws yog siv rau hauv cov hlab ntsha siab thiab cov khoom ua haujlwm hauv qabnruab nrab mus rau siab sab hauv, raws li tau teev tseg hauv ASME Boiler thiab Pressure Vessel Code daim ntawv thov. Cov khoom siv lub zog thiab ductility ua rau nws haum rau boilers, tshav kub exchangers, thiab cov txheej txheem cov hlab ntsha raug rau cyclic siab loading.
Welding thiab Fabrication Conditions: A662 GrB yog dav siv nyob rau hauv tej yam kev mob uas yuav tsum tau nws kim heevvuam thiab sib sau. Nws zoo weldability tso cai rau nws siv nyob rau hauv fabrications uas muaj ntau yam weld pob qij txha, xws li loj cia tso tsheb hlau luam thiab siab nkoj plhaub, tsis muaj preheating nyob rau hauv ntau rooj plaub, txawm hais tias cov txheej txheem tshwj xeeb yog nyob ntawm thickness thiab kev pab cuam ib puag ncig.
Corrosion thiab Media Compatibility: Nws yog siv rau hauv cov kev pabcuam cuam tshuam nrogme ntsis corrosive los yog tsis-corrosive media, suav nrog dej, chav dej, roj, thiab qee cov txheej txheem tshuaj lom neeg. Yog xav tau kev tiv thaiv corrosion, ntxiv kev tiv thaiv xws li cov coatings los yog hauv ob sab phlu yog feem ntau yuav tsum tau.
Cov yam ntxwv thiab ib puag ncig: Cov khoom siv yog siv nyob rau hauv ob qho tib si sab hauv tsev thiab sab nraum zoov, nrog rau cov refineries, tshuaj nroj tsuag, thiab cov chaw tsim hluav taws xob. Nws yog haum rau daim ntaub ntawv qhov twgstructural integrity nyob rau hauv thermal thiab mechanical stressyog qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau thaj tsam uas muaj huab cua txias.
ua
Cua sov thiab Rolling: Cov hlau yog rhuab mus rau qhov tsim nyog kub ntau yam rau kub dov kom ua tau raws li microstructure thiab txhua yam khoom. Kev tswj cov dov kev coj ua pab ua kom zoo dua cov nplej loj, uas ua rau muaj kev txhim kho toughness, tshwj xeeb tshaj yog nyob rau hauv qis kub.
normalization: A662 GrB feem ntau normalized los txhim khu lub zog thiab toughness. Normalization muaj cua sov cov hlau mus rau qhov tsim nyog qhov kub thiab txias, tuav nws rau ib lub sij hawm txaus los xyuas kom meej uniformity, thiab ces txias nws nyob rau hauv huab cua. Cov txheej txheem no kho cov qauv ferrite-pearlite thiab txhim kho qhov ruaj khov.
Quenching thiab Tempering (Q & T): Thaum A662 GrB feem ntau muab nkag rau hauv qhov xwm txheej, qee qhov kev siv yuav siv cov khoom quenched thiab tempered rau lub zog siab dua. Q&T suav nrog kev ua kom txias sai sai tom qab cua sov ua raws li tempering kom sib npaug ntawm lub zog thiab tawv, ua kom muaj kev ua tau zoo nyob rau hauv kev xav tau siab thiab kub.
Vuam tej yam kev mob: A662 GrB nthuav dav weldability zoo, tso cai siv nrog cov txheej txheem vuam xws li SMAW, GMAW, FCAW, thiab SAW. Preheating tej zaum yuav tsum tau rau cov phaj tuab los yog nyob rau hauv ib puag ncig txias los tiv thaiv hydrogen-induced cracking, thiab tom qab vuam thaum tshav kub kub kev kho mob (PWHT) feem ntau yog siv los txo cov residual stresses thiab txhim kho toughness nyob rau hauv welded pob qij txha.
Kev tsim thiab Machining: Cov khoom siv tuaj yeem tsim tau yooj yim siv cov txheej txheem kub lossis txias txheej txheem. Machinability yog qhov zoo, txawm hais tias tsim nyog cov cuab yeej txiav thiab kev nrawm raug pom zoo kom tswj xyuas qhov zoo thiab qhov tseeb qhov tseeb hauv cov hlab ntsha siab.
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.
Yog tias koj muaj qhov yuav tsum tau ua rau A662GrB, peb txais tos koj nug. GNEE tuav cov khoom lag luam loj uas feem ntau siv cov qib siab zog steel rau koj xaiv.Rau cov ncauj lus kom ntxaws cov khoom siv, tshuaj muaj pes tsawg leeg, thiab cov ntaub ntawv kev, nrog rau cov qauv dawb, thov hu rau peb lub Hoobkas tam sim ntawd. Peb muab cov nqi sib tw, ruaj khov zoo, thiab kev pabcuam tshaj lij. Email: beam@gneesteelgroup.com.
Qhov tsawg kawg nkaus tensile lub zog ntawm A662GrB yog dab tsi?
Qhov tsawg kawg nkaus tensile lub zog ntawm A662GrB yog 415 MPa (60 ksi), raws li tau teev tseg hauv ASTM A662 / A662M tus qauv. Qhov no ua kom nws muaj zog txaus rau lub nkoj siab thiab kev siv cov txheej txheem.
Qhov tsawg kawg nkaus tawm lub zog ntawm A662GrB yog dab tsi?
A662GrB muaj qhov tsawg kawg nkaus tawm lub zog ntawm 240 MPa (35 ksi). Qhov kev tawm dag zog no ua rau nws tsim nyog rau kev tiv thaiv cov khoom siv dag zog thiab siab nyob rau hauv ntau yam qis - kub ua haujlwm.
Cov ntsiab lus melting ntawm A662GrB yog dab tsi?
Cov ntsiab lus melting ntawm A662GrB yog kwv yees li 1450-1510℃(2642-2750℃F), zoo ib yam li lwm cov hlau tsis muaj roj carbon tsawg. Qhov ntau yam no yog qhov tseem ceeb rau kev vuam thiab kev kho cua sov txheej txheem tsim.
Dab tsi yog qhov ceev ntawm A662GrB?
Qhov ceev ntawm A662GrB yog li ntawm 7.85 g / cm³ (0.283 lb / in³), uas yog tus qauv ntom ntom rau carbon thiab qis- alloy steels. Tus nqi no yog siv rau kev xam qhov hnyav hauv engineering tsim.
Dab tsi yog qhov pom zoo vuam txoj kev rau A662GrB?
Feem ntau pom zoo welding txoj kev rau A662GrB muaj xws li shielded hlau arc vuam (SMAW), roj hlau arc vuam (GMAW), thiab submerged arc vuam (SAW). Preheating kom raug thiab tom qab-weld kho cua sov yog qhia.
Dab tsi yog qhov yuav tsum tau hardness rau A662GrB?
Lub hardness ntawm A662GrB feem ntau tsis teev nyob rau hauv tus qauv tab sis feem ntau yog nyob ib ncig ntawm 120-160 HB (Brinell Hardness) nyob rau hauv raws li-dov. Kev ntsuam xyuas hardness tej zaum yuav xav tau rau kev tswj kom zoo.
Lub thermal conductivity ntawm A662GrB yog dab tsi?
Nyob rau hauv chav tsev kub, lub thermal conductivity ntawm A662GrB yog hais txog 45 W / (m·K) (26 Btu / (ft·h·℃F)). Cov cuab yeej no yog qhov tseem ceeb rau kev tsim thermal hauv siab - kub lossis qis - daim ntawv thov kub.
Dab tsi yog qhov coefficient ntawm thermal expansion ntawm A662GrB?
Lub linear coefficient ntawm thermal expansion ntawm A662GrB yog kwv yees li 11.7 × 10⁻⁶ /℃(6.5 × 10⁻⁶ /℃F) ntawm 0-100℃(32-212℃F), siv rau thermal stress xam hauv engineering.
Dab tsi yog qhov siab tshaj plaws ntawm A662GrB daim hlau feem ntau muab?
A662GrB daim hlau feem ntau yog muab nrog qhov siab tshaj plaws ntawm 150 hli (6 ntiv tes), nyob ntawm qhov chaw tsim khoom muaj peev xwm. Cov phaj tuab yuav xav tau kev ua haujlwm tshwj xeeb los tswj cov khoom siv kho tshuab.