Q420 yog qhov siab - muaj zog tsawg -}}}}) qauv hlau GB / T 1591 tus qauv. Tus "Q" sawv ntsug rau paib lub zog (QU DIAN), thiab "420" qhia tias yam tsawg kawg nkaus muaj zog lub zog ntawm 420 MPA. Cov kav dej ua los ntawm Q420 cov hlau yog tsim los rau cov khoom siv tseem ceeb thiab hnyav {{4} Lub zog} Lub zog, zoo heev.
1. Cov ntawv thov tseem ceeb ntawm Q420 hlau kav
Q420 cov kav hlau steel yog feem ntau siv hauv cov nplais uas xav tau cov khoom siv zoo dua thiab cov txheej txheem kev ua tau zoo.
Loj - spev spev architectural qauv:Lawv yog cov khoom siv ntawm kev xaiv rau lub tuam tsev loj, xws li chaw ntau pob, cov chaw zov me nyuam, tshav dav hlau, thiab cov dav hlau. Lawv lub zog siab tso cai rau cov txheej txheem ntev dua thiab cov txheej txheem slimmer, tsim ntau cov dav dav thiab kev tsim qauv zoo nkauj.
Hnyav {{{0} Hmoov Dest cov qauv haujlwm:Dav siv nyob rau hauv kev tsim cov kev tsim cov nroj tsuag muaj cov nroj tsuag muaj nqis, cov tshuab hluav taws xob loj, uas lawv yuav tsum tiv thaiv cov cuab yeej hnyav thiab cov rog hnyav.
High - sawv thiab super -} siab} siab} Siab cov vaj tse:Siv rau kev siv cov qauv tseem ceeb xws li cov kab thiab cov girders hauv skyscrapers. Lub zog siab ntawm Q420 txo tus ntoo khaub lig- seem} seem ntawm cov khoom siv hauv pem teb thiab txhim kho tag nrho cov chaw ruaj khov.
Choj Engineering:Haum rau cov tsiaj loj thiab txhawb nqa cov qauv ntawm cov loj thiab nruab nrab- spgnarway cov choj uas yuav tsum tau nruj thiab nkees ua yeeb yam.
Txhawb cov qauv rau cov tshuab hnyav:Siv nyob rau hauv lub booms ntawm cranes, thiab kev txhawb nqa kev txhawb nqa ntawm excavators thiab lwm yam kev siv dag zog siv tau yog qhov tseem ceeb rau kev ua tau zoo thiab kev nyab xeeb.
2. Cov ntsiab lus tseem ceeb thiab cov txiaj ntsig ntawm Q420 cov kav hlau
Kev siv Q420 cov kav hlau muaj cov peev txheej tseem ceeb thiab kev lag luam ntau dua cov pa roj carbon hlau uas zoo li Q235 lossis Q345.
Siab zog thiab ntim tau zoo heev - bearing muaj peev xwm:Nrog rau qhov tsawg kawg los lub zog muaj zog ntawm 420 MPa, Q420 kav tuaj yeem ua kom hnyav dua li qis dua- bex steels. Qhov no tso cai rau cov qauv tsim qauv qauv nrog kev tiv thaiv kev nyab xeeb ntau dua lossis txo qis ntawm cov khoom siv rau tib lub nra.
Zoo toughness thiab kev cuam tshuam tsis kam:Q420 hlau, tshwj xeeb yog cov qib kawm C, D, thiab E (haum rau cov khoom kub qis), muaj cov xwm txheej zoo heev. Qhov no ua kom cov qauv tswj tau nqus lub zog thiab tawm tsam brittle bacthure, uas yog qhov tseem ceeb rau cov qauv nyob rau hauv cov cheeb tsam seismic lossis ib puag ncig txias.
Zoo weldability thiab txheej txheem:Thaum xav tau ntau cov txheej txheem vuam ntau dua li qis - lub zog hlau nplaum, Q420 yog tsim nrog Weldability zoo. Nws tuaj yeem muab welded siv cov kev sib txawv, thiab nws tswj cov kev tsim kho zoo, tso cai rau cov fabrication rau hauv cov qauv txheej txheem nyuaj.
Luj Txo Qhov hnyav thiab cov khoom txuag:Thawj qhov txiaj ntsig tseem ceeb yog qhov txo qis hauv tonnage ntawm cov hlau uas yuav tsum tau rau tus qauv. Siv ntau dua - Lub zog Q420 kav pub rau kev siv cov khoom siv thinner lossis cov khoom lag luam ib yam nkaus thiab cov nqi thauj khoom.
Txhim kho cov txheej txheem ua tau zoo thiab muaj kev ruaj khov:Qhov hnyav txo ncaj qha txhais cov txhais lus me me thiab tsis xav tau cov qauv kev txhawb nqa tsawg dua. Qhov no txhim kho txhua qhov ua tau zoo ntawm kev ua tau zoo thiab ua rau muaj kev ruaj khov los ntawm kev noj roj thiab ib txoj hlua me me ntawm txoj haujlwm ntawm txoj haujlwm.
3. Yav Tom Ntej Kev Tsim Kho Kev Nyab Xeeb
Lub neej yav tom ntej rau Q420 thiab zoo sib xws Siab Siab {}}}} Kev ua tau zoo sib txuas rau hauv ntiaj teb no hauv cov txhab hauv tsev loj thiab kev txhim kho.
Loj hlob thov nyob rau hauv infrastructure megapreds:Raws li haiv neeg nqis peev pab rau kev thauj mus los tshiab (High- kev txhim kho tsheb (skyscrapers, cov khoom siv hluav taws xob, cov khoom siv ntse zoo li Q420 yuav nce mus ntxiv.
Hloov mus rau kev kho kom haum thiab kev ua tau zoo:Kev ua lag luam tau txav mus dhau ntawm Q420 ntawm ntau cov qauv tshwj xeeb. Qhov no suav nrog kev txhim kho cov kav dej nrog:
Txhim kho huab cua huab cua:Rau kev siv nyob rau hauv txuas hniav thiab yees tsis muaj kev xav tau kev pleev xim ntau zaus.
Txhim kho seismic kev ua tau:Nrog rau kev siv tshuaj muaj txiaj ntsig thiab kev ua qauv rau kev ua qauv zoo dua thiab lub zog dissipation hauv av qeeg - tshaj plaws cheeb tsam.
Cov Hluav Taws Kub Ntau Tshaj:Rau qhov tseem ceeb ntawm cov ntawv thov uas yuav tsum tswj hwm hauv hluav taws.
Kev nce qib hauv kev sib raug zoo thev naus laus zis:Kev saws me nyuam ntawm thermo - i} Cov txheej txheem tswj hwm (TMCP) thiab quenching & Tempering (Q & T) thev naus laus zis yuav dhau los ua ntau ntau. Cov txheej txheem no tso cai rau kev tsim cov Q420 kav nrog txawm tias muaj cov khoom siv zoo dua thiab ua kom zoo dua, ntxiv mus ciaj ciam ntawm lub zog thiab tawv.
Kev sib xyaw nrog "kev loj hlob ntsuab" hom phiaj:High - Lub zog Steel yog inherently "cov khoom siv ntsuab" vim lawv lub luag haujlwm ntawm kev tsim hnav thiab kev txuag. Cov txheej txheem ntau lawm rau cov txheej txheem ntau lawm rau kev ua kom muaj zog ntau dua {}}}}} kev phooj ywg zoo thiab ib puag ncig nrog cov phiaj xwm thoob ntiaj teb neutrality hom phiaj.
Hauv kev xaus, Q420 hlau kav yog ib qho paub tab yog qhov paub tab thiab siab- kev daws teeb meem. Lawv cov khoom zoo tshaj ua rau lawv tsis pom kev zoo rau cov kev tsim kho niaj hnub, thiab lawv txoj kev hloov zuj zus los ua kom tiav lawv txoj kev tsim kho kom muaj kev kawm tshiab rau xyoo tom ntej.
