Tusqaug zogntawmQ460nd(Lub zog loj dua qub hlau hluav taws xob hlau) nyob ntawm cov khoom siv xws li chaw thau khoom, muaj kev ntxhov siab, zoo nkauj, thiab kev sib kis kom zoo, thiab kev sib kis ib puag ncig, thiab kev sib kis kom zoo, thiab ib puag ncig. Hauv qab no yog qhov tseem ceeb rau kev xav txog:
1. Quaj Quaj Zog
Cn nkhaus (qaug zog lub neej):
Q460NH cov khoom ua kom zoo dua li cov hlau loj dua li cov hlau me me vim nws qhov kev ua tau zoo, tab sis nws cov kev ua tau zoo los ntawm kev ntxhov siab, thiab ua rau muaj peev xwm thauj khoom zaus.
Hauv qabTag nrho tau cyclic chaw thau khoom (r=-1), tusKev ntxhov siab kawg(qaug zog tsis pub tshaj ntawm 10⁷ mus voj voog) yog ib txwm nyob ib puag ncig200-250 mpa(Ua raws li saum npoo ua tiav thiab ntxhov siab ntau).
RauRaws li-welded sib koom tes, kev qaug zog tsis muaj zog txo qis (feem ntau50-70% qis duadua li paus hlau) vim weld tsis xws luag thiab seem kev ntxhov siab.
Kev sib piv nrog lwm cov hlau:
Muaj zog zoo li lub zog (460 MPA
Huab Cua Cov Khoom (Corrosion Kuj) Pab nyob rau hauv kev ua phem nkees ntev, tab sisCorrosion qaug zogtseem tuaj yeem tshwm sim yog kev tiv thaiv pata yog puas.
2. Qhov xwm txheej cuam tshuam rau kev ua tau zoo
A) Kev ntxhov siab ntxhov siab
Ceeb toom, ntse fab, thiab cov qhov ua rau qaug zog qaug zog.
Me quav: Siv cov kev hloov pauv me me, zom weld ntiv taw, thiab zam kom tsis txhob muaj Geometry hloov.
b) qhov xwm txheej
Cov nplaim thaiv ntxhib (piv txwv li, nplaim taws-txiav cov npoo) ua raws li cov chaw nres tsheb pib.
Me quav: Machining lossis sib tsoo txhim kho kev ua kom qaug zog lub neej los ntawm20–30%.
c) welding cuam tshuam
Welded pob qij txha yog qhov qaug zog rog tsis muaj zog vim cov kev ntxhov siab thiab microstructural hloov.
Me quav:
Tom qab kev kho cua sov tom qab Weld (duab) kom daws kev ntxhov siab.
Peen lossis sib tsoo weld hloov pauv.
Siv cov qaug zog-tiv thaiv weld tsim (piv txwv li, cov kev nkag mus puv npo).
d) corrosion qaug zog
Nyob rau hauv kev sib zog ib puag ncig (piv txwv li, cov tubrog nkoj lossis cov chaw muaj cua), corrosion accelerive nkees nkees loj hlob.
Me quav:
Ua kom ntseeg tau tias kev tsim kom zoo pata tsim (raug rau cyclic ntub / cov mob qhuav).
Kev tiv thaiv txheej txheem (yog tias xeb ua kom qaug zog yog qhov kev txhawj xeeb loj).
3. Cov qauv kev tsim kho rau Q460NH
Eurocode 3 (Rau 1993-1-9): Muab kev ua kom qaug zog tsis muaj zog (nthuav dav cov) rau welded thiab tsis-welded Cheebtsam.
Rau lub hauv paus hlau (machined nto):Nthuav dav qeb ~ 160 mpa(ntawm 2 lab mus los).
Rau welded pob qij txha:Qhia meej qeb 71-125 mpa(Nyob ntawm hom sib koom tes).
ASTM A588: Kev ntsuas zoo ib yam li, tab sis kev xeem raws li qhov kev pom zoo hauv qee yam.
4. Txhim kho lub neej qaug zog
Tua puab tsaig: Qhia compressive nto cuam tshuam kom ncua kev pib nres.
Txhim Kho Fabrication: Txo qhov tsis xws luag, siv kev qaug zog-tiv thaiv geometries.
Kev kuaj xyuas tsis tu ncua: Tshawb nrhiav thaum ntxov-theem tawg hauv cov khoom tseem ceeb.
