Q390D yog qhov siab -kev ua tau zoo ntawm cov qauv hlau uas muaj ntau yam zoo hauv kev tsim cov qauv hlau, tshwj xeeb tshaj yog rau cov haujlwm uas xav tau. Nws lub npe lov raws li:
Q390: Tsawg tshaj tawm lub zog ntawm 390 MPa (ntau dua li Q235 lossis Q345 steels).
D: Qhia txog qib zoo, sawv cev rau siab toughness ntawm qhov kub thiab txias (tshuaj ntsuam xyuas ntawm -20 degree).
Nov yog nws cov txiaj ntsig tseem ceeb hauv kev siv tsev:
1. Siab zog thiab Load-Bearing Capacity
Qhov hnyav txo qhov hnyav: Piv rau Q345 steel uas nquag siv, Q390D lub zog muaj zog ntau dua tso cai rau siv cov ntoo khaub lig me me - ntu (thinner beams, txhua kab, thiab lwm yam) kom ua tiav tib lub load-cov kabmob muaj peev xwm. Qhov no ua rau kev txuag khoom, sib dua tag nrho cov qauv, thiab txo cov loads ntawm lub hauv paus.
Tsim nyog rau Cov Ncauj Lus Loj thiab Hnyav: Zoo tagnrho rau cov khoom siv tseem ceeb hauv cov tsev loj - ncua sij hawm (piv txwv li, tshav dav hlau terminals, chaw ua si, chaw ua yeeb yam, chaw ua yeeb yam), siab - nce vaj tse, thiab cov nroj tsuag muaj cov crane hnyav.
2. Zoo heev Low-Temperature Toughness (Lub Core ntawm "D" Qib)
Brittle Fracture Resistance: Qib "D" ua kom cov hlau muaj kev cuam tshuam zoo ntawm qhov kub thiab txias li -20 degree. Qhov no yog qhov tseem ceeb rau:
Cov qauv hauv cov huab cua txias: Cov tsev nyob rau sab qaum teb lossis siab - thaj chaw siab.
Cov tub yees Warehouses: Industrial txias cia chaw.
Cov Txheej Txheem Kev Nyab Xeeb Tseem Ceeb: Ua kom cov qauv tuaj yeem nqus tau lub zog thiab tiv thaiv kev puas tsuaj rau lub cev tsis zoo thaum lub sijhawm txias txias lossis cuam tshuam tam sim ntawd.
3. Zoo Weldability thiab Formability
Thaum siab dua hauv lub zog thiab cov pa sib npaug (Ceq) dua li Q345, Q390D tseem tsim los nrog kev sib txuas zoo. Nws yuav tsum tau tswj cov txheej txheem vuam ntau dua (ua ntej- cua sov, tshwj xeeb electrodes, thiab lwm yam) tab sis tso cai rau kev tsim kom muaj zog, txhim khu kev qha welded txuas tseem ceeb hauv kev tsim kho steel niaj hnub.
Nws tuav cov formability txaus siab rau cov txheej txheem fabrication xws li txiav, dabtsi yog khoov, thiab drilling.
4. Kev ua tau zoo ntawm kev lag luam hauv kev siv tshwj xeeb
Txawm hais tias chav tsev nqi ntawm Q390D siab dua Q345, nws lub zog siab - rau - qhov hnyav piv tuaj yeem ua rau tag nrho cov nqi txuag nyiaj los ntawm:
Txo steel tonnage.
Teeb lub hauv paus.
Tsawg dua kev thauj mus los thiab tus nqi tuav.
Muaj peev xwm rau ntau streamlined, elegant designs nrog slimmer cov tswv cuab.
5. Txhim khu kev ruaj ntseg thiab kav ntev
Kev sib xyaw ua ke ntawm lub zog siab thiab ruaj khov ua kom muaj kev nyab xeeb dua, tshwj xeeb tshaj yog rau cov qauv uas muaj cov khoom hnyav, cua vibrations, lossis seismic kev ua si. Nws pab txhawb rau tag nrho cov qauv kev ncaj ncees thiab lub neej ntev ntawm lub tsev.
Hom Kev Siv Hauv Tsev Hauv Tsev:
Cov khoom tseem ceeb-cov kabmob hauv cov high high-cov tsev nce siab (piv txwv li, mega-kem, hloov girders).
Loj -span spatial lug xws li trusses, arches, thiab grid shells nyob rau hauv pej xeem vaj tse.
Heavy-cov haujlwm crane girders thiab kab hauv cov mills thiab warehouses.
Cov pob qij txha tseem ceeb thiab kev sib txuas hauv seismic-cov qauv tiv thaiv.
Txhawb cov qauv hauv qhov chaw qis - qhov kub thiab txias.
Kev sib piv & kev txiav txim siab:
vs. Q345B: Q390D muaj zog dua thiab muaj qhov ua tau zoo dua qis dua - qhov kub thiab txias. Nws yog ib qho kev hloov kho tshiab rau cov kev xav tau ntau dua.
vs. Q460 lossis qib siab dua: Q390D muaj qhov sib npaug zoo ntawm lub zog, toughness, weldability, thiab nqi. Cov qib siab dua yog qhov muaj zog dua tab sis feem ntau nyuaj rau vuam thiab kim dua.
Lus Cim Tseem Ceeb: Cov txiaj ntsig tau pom zoo tsuas yog thaum tus tsim siv nws lub zog siab. Yog hais tias ib tug tswv cuab qhov loj yog dictated los ntawm nruj (deflection txwv) es tsis muaj zog, lub zog siab dua yuav tsis siv tag nrho. Cov txheej txheem vuam kom raug thiab kev tswj xyuas zoo yog qhov tseem ceeb.
Hauv cov ntsiab lus,Qhov tshwj xeeb zoo ntawm Q390D yog nyob rau hauv nws qhov kev pom zoo ua ke ntawm lub zog siab, txheeb xyuas qhov qis -kub toughness, thiab txaus weldability. Nws yog cov khoom siv xaiv rau cov kws tsim qauv tsim kom muaj kev nyab xeeb dua, kev lag luam ntau dua, thiab cov qauv hlau tshiab tshiab uas yuav tsum ua raws li cov khoom tseem ceeb, hauv cov huab cua hnyav, lossis qhov chaw ua haujlwm zoo tshaj plaws.