ASTM A516 Qib 65yog cov pa roj carbon steel phaj qib tsim rau kev siv lub nkoj siab, muab kev txhim khu kev qha hauv nruab nrab mus rau qhov kub thiab txias. Nws yog ib feem ntawm ASTM A516 specification, uas npog cov pa roj carbon steel daim hlau rau welded siab hlab ntsha xav tau zoo toughness thiab kuj mus nkig puas. Nrog rau qhov tsawg kawg nkaus tawm lub zog ntawm 65 ksi (450 MPa) thiab kev tswj chemistry uas txhim kho weldability thiab ductility, Qib 65 feem ntau normalized los xyuas kom meej cov khoom sib xws ntawm cov thicknesses. Nws lub zog, toughness, thiab tus nqi-zoo ua rau nws siv dav hauv cov roj thiab roj, tshuaj lom neeg, thiab hluav taws xob siv hluav taws xob uas cov cuab yeej siv yuav tsum ua haujlwm zoo nyob rau hauv qhov sib txawv ntawm qhov kub thiab txias.
A516 Hlau Phaj Muaj Qhov Loj
| QIB | TUB NTXHAIS | WIDTH | LENGTH |
| 65 | 3/16" – 8" | 48" – 120" | Mus txog 480 " |
Khoom Khoom
| Qib | Yield Point (ksi) | Tensile zog (ksi) | Tsawg. 8" Elongation % |
| 65 | 35 | 65-85 | 19 |
A516 Steel Phaj Chemical Composition
| Qib 65 | |
| Carbon Max, Tsawg dua lossis sib npaug li 1/2 "Thick | 0.24% |
| Carbon Max, >1/2 "& Tsawg dua los yog sib npaug rau 2" Thick | 0.26% |
| Carbon Max, >2 "& Tsawg dua los yog sib npaug rau 4" Thick | 0.28% |
| Carbon Max, >4 "Thick | 0.29% |
| Manganese | 0.85-1.20% |
| Phosphorus max | 0.025% |
| Sulfur max | 0.025% |
| Silicon | 0.15-0.40% |
Kev khiav dej num ntawm ASTM A516 Qib 65
Kev npaj raw khoomCov txheej txheem pib nrog xaiv cov qib siab - zoo hlau ore, seem hlau, thiab lwm yam alloying ntsiab. Cov ntaub ntawv no tau ua tib zoo muab faib ua kom tau raws li cov tshuaj muaj pes tsawg leeg ntawm ASTM A516 Qib 65, uas hais txog cov pa roj carbon, manganese, thiab silicon cov ntsiab lus kom muaj zog, tawv, thiab weldability.
Melting thiab RefiningCov ntaub ntawv raw yog melted nyob rau hauv lub cub tawg los yog hluav taws xob arc rauv. Cov hlau molten yog tom qab ntawd ua kom zoo dua los ntawm cov txheej txheem xws li ladle refining lossis nqus degassing kom txo cov impurities, kho cov tshuaj muaj pes tsawg leeg, thiab txhim kho kev huv huv. Cov kauj ruam no yog qhov tseem ceeb rau kev ua tiav qhov qis -kub toughness xav tau rau kev pabcuam lub nkoj siab.
Nruam CastingTom qab refining, cov hlau molten yog cam khwb cia rau hauv slabs los yog blooms siv lub nruam casting tshuab. Cov txheej txheem no ua kom cov qauv sib xws, txo qis kev sib cais, thiab muab lub hauv paus zoo ib yam rau kev ua haujlwm dov tom ntej.
Normalizing Kev kho cua sovASTM A516 Qib 65 feem ntau yog normalized los txhim kho toughness thiab xyuas kom meej txhua yam khoom nyob rau hauv txawv thicknesses. Cov hlau yog rhuab mus rau qhov kub thiab txias (feem ntau nyob ib ncig ntawm 870-930 degree), tuav rau lub sij hawm txaus, thiab tom qab ntawd cua- txias. Qhov kev kho no refines lub grain qauv thiab txhim kho ductility.
Kub RollingCov slabs li qub yog reheated thiab kub - dov rau hauv daim hlau ntawm ntau thicknesses. Rolling txo qhov loj ntawm cov nplej, txhim kho lub zog, thiab ua kom lub ntsej muag zoo. Qhov kawg thickness yog ua tib zoo tswj kom tau raws li lub siab lub nkoj tsim cov cai.
Txiav, sib sau, thiab vuamCov phaj yog txiav kom loj los ntawm kev siv hluav taws xob txiav los yog plasma txiav. Tom qab ntawd lawv raug tsim los rau hauv cov hlab ntsha siab xws li lub plhaub, lub taub hau, thiab cov nozzles los ntawm cov txheej txheem xws li khoov thiab nias. Vuam yog ua los ntawm cov qauv txheej txheem xws li SMAW, GMAW, los yog SAW, nrog tsawg preheating thiab post-weld tshav kub kev kho mob vim cov khoom zoo weldability.
Kev tshuaj xyuas thiab kuajKev tshuaj xyuas zaum kawg suav nrog kev kuaj ultrasonic, kuaj hluav taws xob, kuaj tensile, kuaj qhov cuam tshuam, thiab kuaj hardness. Cov kev ntsuam xyuas no xyuas kom meej tias cov khoom ua tau raws li cov txheej txheem ntawm cov cuab yeej cuab tam ntawm ASTM A516 Qib 65 thiab tsis muaj qhov tsis xws luag uas tuaj yeem cuam tshuam cov hlab ntsha siab.
Cov ntawv thov tseem ceeb
Roj refineries thiab roj ua cov chaw ua haujlwm:
Feem ntau yog siv rau kev tsim cov boilers, cov hlab ntsha siab, thiab cov tank cia- cov khoom siv tseem ceeb hauv kev ua cov roj thiab roj. Cov cuab yeej no tswj cov roj av, cov khoom siv roj ua kom zoo (xws li roj av, diesel, roj lubricating), thiab roj liquefied (piv txwv li, LPG, LNG). Txawm tias nyob rau hauv qhov hloov pauv siab thiab qhov kub thiab txias thaum lub sijhawm ua haujlwm, cov khoom siv no tswj cov qauv kev ruaj ntseg thiab tsis txhob tawg tawg, ua kom muaj kev nyab xeeb thiab tsis tu ncua ntawm kev ua haujlwm.
Kev lag luam tshuaj:
Siv nyob rau hauv kev tsim cov tshuaj tiv thaiv hlab ntsha, distillation yees, thiab txheej txheem piping Cheebtsam. Cov khoom siv no feem ntau siv rau kev ua thiab khaws cov tshuaj lom neeg me me (piv txwv li, cov kuab tshuaj organic, tsis muaj zog acids, alkalis), thiab tuaj yeem ua tau raws li cov kev xav tau ntawm cov khoom siv tshuaj lom neeg.
Lub zog tsim kev lag luam:
Siv los tsim hluav taws xob sib hloov, condensers, thiab boiler nruas nyob rau hauv thermal fais fab nroj tsuag thiab nuclear fais fab auxiliary systems. Cov khoom siv no yuav tsum tiv taus qhov siab ntawm siab - qhov kub thiab txias dej, thiab cov khoom siv tau zoo heev thiab lub zog ua kom muaj kev hloov pauv tau zoo thiab ua haujlwm ntev - lub sij hawm nyab xeeb.
Yog xav paub ntxiv txog GNEE cov khoom siv hlau, tiv tauj peb ntawm beam@gneesteelgroup.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
ASTM A516 Qib 65 steel siv rau dab tsi?
ASTM A516 Qib 65 yog cov pa roj carbon-manganese steel tsim los rau kev pabcuam lub nkoj hauv nruab nrab mus rau qhov kub thiab txias. Nws yog feem ntau siv nyob rau hauv cov roj refineries, petrochemical nroj tsuag, thiab boiler fabrication qhov twg zoo toughness thiab weldability yuav tsum tau. Cov qib muaj qhov zoo tshaj plaws torque toughness thiab tsim nyog rau cov hlab ntsha khaws cia lossis ua cov kua dej thiab cov pa roj carbon monoxide. Nws cov khoom ua rau nws zoo tagnrho rau nruab nrab - kev pabcuam siab.
Dab tsi yog cov khoom tseem ceeb ntawm A516 Qib 65?
A516 Qib 65 feem ntau muaj qhov tsawg kawg nkaus lub zog ntawm 310 MPa thiab lub zog tensile xws li 485 txog 620 MPa. Nws pom zoo ductility nrog elongation ntawm ib ncig ntawm 18-22 feem pua. Cov hlau kuj tseem muab qhov zoo tshaj plaws torque toughness, tshwj xeeb tshaj yog nyob rau hauv transverse kev taw qhia, ua rau nws haum rau tsis tshua muaj kub siab siab daim ntaub ntawv. Cov khoom no ua kom ntseeg tau tias kev ua tau zoo nyob rau hauv nruab nrab siab thiab kev ntxhov siab.
Dab tsi yog qhov siab tshaj plaws thickness muaj rau A516 Qib 65 daim hlau?
A516 Qib 65 daim hlau feem ntau yog tsim nyob rau hauv thicknesses ntawm 6 hli mus rau 200 hli, nyob ntawm seb lub zeb thiab ntau lawm muaj peev xwm. Cov phaj tuab yuav xav tau kev kho cua sov tshwj xeeb kom ntseeg tau tias cov khoom siv kho tshuab tsis sib xws los ntawm ntu. Cov neeg tsim khoom feem ntau muab cov phaj nrog kev kho cua sov kom zoo rau kev txhim kho toughness thiab microstructure homogeneity, tshwj xeeb tshaj yog rau cov hlab ntsha tseem ceeb.
Qhov txawv ntawm A516 Qib 60 thiab Qib 65 yog dab tsi?
Lub ntsiab sib txawv yog nyob rau hauv lawv tensile thiab yield zog. Qib 65 muaj qhov muaj zog ntau dua piv rau Qib 60, tso cai rau nws siv hauv kev xav tau ntau dua ntawm cov hlab ntsha. Qib 65 kuj tseem muaj qhov ua tau zoo dua ntawm qhov kub thiab txias, ua rau nws haum rau qhov chaw txias dua. Qib 60 feem ntau yog xaiv rau cov ntawv thov tseem ceeb uas tus nqi thiab kev tsim muaj qhov tseem ceeb dua li cov khoom muaj zog dua.
Kev kho cua sov dab tsi yog siv rau A516 Qib 65?
A516 Qib 65 daim hlau feem ntau yog muab rau hauv cov xwm txheej zoo los kho cov microstructure thiab txhim kho toughness. Normalization muaj cua sov cov hlau mus rau qhov kub siab tshaj qhov tseem ceeb, feem ntau nyob ib ncig ntawm 870-900 degree, ua raws li cua txias. Qhov kev kho no txhim kho weldability thiab txo qhov kev pheej hmoo ntawm embrittlement nyob rau hauv tuab seem. Qee daim ntawv thov kuj tseem yuav xav tau kev ntxhov siab tom qab tsim los txo cov kev ntxhov siab uas seem.
Cov tshuaj muaj pes tsawg leeg ntawm A516 Qib 65 yog dab tsi?
A516 Qib 65 muaj cov pa roj carbon ntau txog 0.27 feem pua, manganese nruab nrab ntawm 0.79 thiab 1.30 feem pua, thiab me me ntawm silicon, phosphorus, thiab sulfur. Nws kuj tseem tuaj yeem suav nrog tooj liab, chromium, molybdenum, thiab npib tsib xee hauv qhov txwv kom muaj zog thiab tawv. Cov muaj pes tsawg leeg yog ua tib zoo tswj xyuas kom zoo weldability thiab tsis kam mus rau nkig tawg nyob rau hauv lub siab hlab ntsha kev pab cuam tej yam kev mob.
Puas yog A516 Qib 65 haum rau qis-kev pabcuam kub?
Yog lawm, A516 Qib 65 yog tsim rau qis- kev pabcuam kub mus txog kwv yees li -30℃, nyob ntawm qhov tuab thiab kev kho cua sov. Nws zoo thais toughness, tshwj xeeb tshaj yog nyob rau hauv lub normalized mob, pab tiv thaiv nkig tawg nyob rau hauv ib puag ncig txias. Rau qhov kub qis dua -30 degree, cov neeg siv feem ntau xaiv cov qib qis-carbon lossis cov ntsiab lus alloying ntxiv kom ntseeg tau tias muaj zog txaus thiab kev ntseeg siab nyob rau hauv huab cua.
Cov txheej txheem vuam dab tsi feem ntau siv rau A516 Qib 65?
A516 Qib 65 tuaj yeem welded siv cov txheej txheem xws li SMAW, GMAW, FCAW, thiab SAW. Preheating feem ntau pom zoo rau cov phaj tuab los tiv thaiv hydrogen-induced cracking, tshwj xeeb tshaj yog nyob rau hauv huab cua. Cov hlau tsis tshua muaj carbon sib npaug ua rau nws feem ntau weldable yam tsis muaj kev ceev faj ntau dhau. Tom qab-weld kev kho cua sov tuaj yeem siv los txo cov kev ntxhov siab uas seem thiab txhim kho cov tawv tawv hauv cov ntawv thov tseem ceeb.
Dab tsi yog cov ntawv thov ntawm A516 Qib 65 daim hlau?
A516 Qib 65 daim hlau yog dav siv hauv kev tsim cov hlab ntsha siab rau cov roj refineries, tshuaj nroj tsuag, thiab cov chaw ua roj. Lawv kuj pom muaj nyob rau hauv boilers, cia tso tsheb hlau luam, thiab tshav kub exchangers qhov nruab nrab siab thiab kub kuj yuav tsum tau. Lub steel lub toughness thiab weldability ua rau nws haum rau loj - cov hlab ntsha thiab hnyav - cov phab ntsa ua hauj lwm raws li xav tau kev pab.
Dab tsi yog qhov nyuaj ntawm A516 Qib 65?
A516 Qib 65 feem ntau muaj Brinell hardness ntau ntawm 137 thiab 197 HB, nyob ntawm qhov tuab thiab kev kho cua sov. Cov phaj tuab yuav muaj qhov tseem ceeb dua qhov hardness me ntsis vim qhov txias txias qeeb thaum lub sij hawm normalization. Lub hardness tswj xyuas kom zoo formability thiab weldability thaum tuav lub zog txaus rau kev siv lub nkoj siab. Kev ntsuam xyuas hardness tsis tu ncua yog ua los xyuas cov khoom sib xws.