Puas yog ASTM A612 Class 3 weldable?
Yog lawm,ASTM A612 Cov Lus Qhia Tshwj XeebQib/Class 3 steel phaj yog tsim los rau vuam thiab zoo heev haum rau welded siab hlab ntsha ua hauj lwm nyob rau hauv nruab nrab thiab tsis kub. Nws yog cov pa roj carbon monoxide -manganese- silicon steel uas muaj qhov siab tawv tawv, nrog cov sulfur thiab phosphorus cov ntsiab lus uas txo qis qhov sib tsoo, tso cai rau txhim khu kev qha, siab - lub zog welds.
ASTM A612 yog cov qib tshwj xeeb siab ntawm cov hlab ntsha steel uas tsom rau kev muab lub zog tawm los ntawm cov phaj nyias nyias, feem ntau yog siv rau hauv nruab nrab lossis qis - qhov kub thiab txias. Nws belongs rau carbon-manganese-silicon tsev neeg thiab yog tsim los ua "tua" hlau, txhais tau tias nws tau raug deoxidized nrog silicon los yog txhuas kom ntseeg tau tias muaj cov tshuaj lom neeg thiab cov qauv zoo sib xws. Qhov txiaj ntsig tseem ceeb ntawm A612 yog nws qhov siab tshaj tawm lub zog ntawm 50,000 psi, uas tau lees paub rau daim hlau txog li 1 nti tuab. Qhov no tso cai rau cov engineers tsim fusion{11}}welded tanks uas sib dua thiab tus nqi ntau dua- siv tau, tshwj xeeb tshaj yog rau kev thauj mus los ntawm cov tshuaj lom neeg thiab roj.
Cov yam ntxwv tseem ceeb
Chemical Balance:High Manganese (1.00–1.50%) ua kom lub zog thiab hardenability nyob rau hauv nyias seem.
Kev Pabcuam Kub Kub:Tsim nyog rau cov ntawv thov uas yuav tsum tau muaj qhov toughness ntawm sub-zero kub.
Smooth Surface Quality:Raws li - dov daim hlau rau nyias - cov hlab ntsha phab ntsa feem ntau pom qhov zoo tshaj plaws ua tiav rau vuam.
Deoxidation:Silicon cov ntsiab lus (0.15-0.50%) ua kom cov hlau raug tua tag nrho.
Qib Qib
ASTM A612 Cov Lus Qhia:Lub npe tseem ceeb rau qhov siab - zog, carbon-manganese- silicon siab hlab ntsha hlau.
Qhov xwm txheej:Feem ntau muab nyob rau hauv raws li -rolled, normalized, los yog kev nyuaj siab-relieved mob nyob ntawm seb yuav tsum tau.
Kev sib piv nrog ASTM A285 Qib C
Qib Siab:A612 muaj zog ntau dua (50 ksgyield) piv rau A285-C (30 ksgyield).
Microstructure:A612 yog ib tug tua, nplua -cov hlau nplej; A285 feem ntau yog qis dua -lub zog semi- tua lossis tua hlau.
Weldability:Thaum ob qho tib si yog weldable, A612 yuav tsum muaj kev tswj xyuas ntau dua vim nws cov ntsiab lus manganese ntau dua.
Cov ntawv thov siv
Siv nyob rau hauvkev tsim cov hlab ntsha siab, boilers, thiabkub exchangers.
Feem ntau pom nyob rau hauvtshuaj nroj tsuag, roj refineries, thiabchaw nres tsheb fais fab.
Zoo tagnrho raunruab nrab - mus rau siab - ib puag ncig siabxav tauthermal cyclingthiabmechanical stress resistance.
Tseem ceeb raukev tiv thaiv siabthiabsiab -kub sivqhov twg durability thiab kev ntseeg siab yog tsim nyog.
Kuj tseem siv hauvcov kav dejuas thauj siab -siab chav lossis tshuaj.
ASTM A612 puas tuaj yeem siv rau cov ntawv thov cryogenic?
ASTM A612 tsis haum rauDaim ntawv thov cryogenicvim nws txocuam tshuam toughnessntawm qhov kub thiab txias. Rau ib puag ncig cryogenic, cov ntaub ntawv zoo liA350 LF2los yogA516zoo dua, raws li lawv tswj lawv cov toughness ntawm tsis tshua muaj kub. ASTM A612 yog npaj raunruab nrab -siabthiabsiab -kub ib puag ncig, tsis yog rau cov xwm txheej huab cua pom nyob rau hauv cov txheej txheem cryogenic
Dab tsi yog qhov cuam tshuam toughness ntawm ASTM A612?
ASTM A612 cov khoom pov thawjzoo cuam tshuam toughnessthiab tuaj yeem nqus taudynamic mechanical stresstsis tawg. Qhov no yog qhov tseem ceeb rau cov ntawv thov xws licov hlab ntsha siabthiabboilers, qhov twghloov saihauv siab thiab kub tuaj yeem tshwm sim. Cov khoom sivtawvxyuas kom nws tuav nwsstructural kev ncaj nceestxawm nyob hauv qabpoob siab loadingthiabthermal cycling.
Puas yog ASTM A612 Weldable?
Yog lawm, ASTM A612 yogweldablesiv cov tswv yim zoo liMIG, TIG, thiabnplaum welding. Rau cov seem thicker,preheatingthiabtom qab-weld kub kho(PWHT) tej zaum yuav xav tau kom tsis txhob tawg thiab ua kom cov welds muaj zog. Nwsweldabilityua rau nws zoo tagnrho rau complex fabrications xws licov hlab ntsha siabthiabboilers, qhov twg txhim khu kev qha welded pob qij txha yog qhov tseem ceeb rau kev ncaj ncees ntawm cov qauv.
Tshuaj muaj pes tsawg leeg
Cov yam ntxwv hauv qab no yog ASTM specifications rau A612 siv kev ntsuas kub.
| A612 | |
| CARBON MAX | 0.25% |
| MANGANESE | 1.00-1.50% |
| PHOSPHORUS MAX | 0.030% |
| SULFUR MAX | 0.030% |
| SILICON | 0.15-0.50% |
| POB MAX | 0.35% |
| NICKEL MAX | 0.25% |
| CHROMIUM MAX | 0.25% |
| MOLYBDENUM MAX | 0.08% |
| VANADIUM MAX | 0.08% |
Cov khoom siv hauv qab no yog ASTM cov lus qhia tshwj xeeb thiab yuav raug lees paub ntawm Mill Test Report.
| A612 | YIELD POINT (KSI) | Lub zog tensile (KSI) | MIN. 8" ELONGATION % |
| UAS 0.5 IN. THOV | 50 | 83-105 | 16 |
| Tshaj 0.5 IN. TO 1 IN. THOV | 50 | 81-101 | 16 |
1 ASTM A612 yog dab tsi?
ASTM A612 yog acarbon hlauspecification raucov hlab ntsha siab, feem ntau siv hauvboilersthiabkub exchangers. Nws yogkub- khotxhim khoyield zog, tensile zog, thiabtawv. Zoo tagnrho raunruab nrab -siabthiabsiab -kub ib puag ncig, ASTM A612 feem ntau siv hauv kev lag luam xws lichemical ua, roj refining, thiabtsim hluav taws xob, qhov twgdurabilitythiabkev ntseeg tauyog qhov tseem ceeb hauv kev thov kev lag luam.
2 Lub zog ntawm ASTM A612 yog dab tsi?
Covyield zogntawm ASTM A612 feem ntau yog los ntawm32 ksi (220 MPa)rau50 ksi (345 MPa), nyob ntawm thickness. Qhov no muab lub zog txaus raulub nkoj siabthiabboilerdaim ntawv thov qhov nruab nrab - mus rau - siab siab tam sim no. Qhov nozogxyuas kom meej tias cov khoom muaj peev xwm tiv taus cov neeg kho tshuab kev ntxhov siab thiab kev ntxhov siab thaum lub sijhawm ua haujlwm yam tsis muaj deformation lossis tsis ua haujlwm.
3 Cov kev lag luam twg siv ASTM A612?
ASTM A612 yog siv rau hauv kev lag luam uas xav tau cov ntaub ntawv rausiab -siabthiabsiab -kubib puag ncig. Cov lag luam tseem ceeb muaj xws li:Chemical, processing, Roj refining, Fais fab tuag, Petrochemicals,Nws yog siv los tsimcov hlab ntsha siab, boilers, kub exchangers, thiabcov kav dej. Cov ntawv thov no xav tau cov ntaub ntawv uas tuaj yeem tiv tausmechanical kev nyuaj siab, kub caij tsheb kauj vab, thiabthermal expansiontsis muaj kev poob haujlwm.
4 Cov tshuaj muaj pes tsawg leeg ntawm ASTM A612 yog dab tsi?
Covtshuaj muaj pes tsawg leegASTM A612 feem ntau suav nrog:,Cov pa roj carbon (C): 0.18–0.23%,Manganese (Mn): 1.00–1.60%,Silicon (Si): 0.20–0.50%,Phosphorus (P): Tsawg dua lossis sib npaug li 0.035%,Sulfur (S): Tsawg dua los yog sib npaug rau 0.035%, Qhov kev sib xyaw no ua kom muaj qhov sib npaug ntawmzog, tawv, thiabweldability, ua kom haum raulub nkoj siabkev tsim kho thiab lwm yamsiab -kev siv siab.
5 Lub zog tensile ntawm ASTM A612 yog dab tsi?
Covtensile zogRaws li ASTM A61270 ksi (485 MPa)rau90 ksi (620 MPa), ua kom haum rauhigh -siab tshuab. Nws lub zog tensile siab ua kom cov khoom tuaj yeem ua haujlwm tseem ceebmechanical kev nyuaj siabthiabsiabtsis muaj kev poob haujlwm. ASTM A612 yog siv rau hauvboilersthiabcov hlab ntsha siabraug mob heev qhov twgzogthiabresilienceyog qhov tseem ceeb rau kev ruaj ntseg.
6 Lub hardness ntawm ASTM A612 yog dab tsi?
CovBrinell hardnessntawm ASTM A612 feem ntau yog los ntawm180-250 HB, nyob ntawm thickness. Qib ntawm hardness no ua kom cov khoom tiv taus hnav,deformation, thiabpuasnyob rau hauv mechanical kev nyuaj siab. Lub hardness yog haum raucov hlab ntsha siabthiabboilers, qhov twg ntev - kev ua tau zoo yog qhov tseem ceeb hauv qabsiab -siabthiabsiab -kubtej yam kev mob.
7 Dab tsi yog qhov elongation ntawm ASTM A612?
Covelongationntawm ASTM A612 feem ntau yog nyob ib ncig ntawm20% hauv 8 nti(200 hli). Cov cuab yeej no yog qhov tseem ceeb rau cov ntaub ntawv siv hauv cov ntawv thov uas koom nrogmechanical kev nyuaj siabthiabthermal expansion, zoo licov hlab ntsha siabthiabboilers. Lub peev xwm elongate yam tsis muaj kev tawg ua kom cov khoom seemresiliencethiab muaj peev xwm tiv tauskub hloov pauvthiabmechanical loading.
Tiv tauj peb ntawm info@gneesteels.com rau tus nqi, kev txhawb nqa, lossis kev daws teeb meem. Peb yeej ib txwm npaj los txhawb koj qhov project.
