1. Core Mechanical Properties Supporting Load-Cov Ntaub Ntawv Bearing
Yield zog: Ntau dua los yog sib npaug rau 550 MPa ("550" nyob rau hauv lub npe qib yog hais txog qhov ntsuas no), uas yog ntau dua li cov pa cua sov xws li Q355NH (Ntau dua lossis sib npaug rau 355 MPa) thiab SPA-H (Ntau dua lossis sib npaug rau 345 MPa). Qhov no siab yield zog tso cai rau kev siv ntawm nyias daim hlau nyob rau hauv tib lub load, txo cov qauv hnyav.
Tensile zog: 650-830 MPa, xyuas kom txaus ductility thiab tsis kam mus tensile tawg nyob rau hauv dynamic los yog static loads.
Elongation: Ntau dua lossis sib npaug li 17%, ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv hlau kom tsis txhob muaj qhov tsis ua haujlwm thaum lub sijhawm hloov pauv.
Tsawg- qhov kub thiab txias cuam tshuam toughness: Cov qhab nia nruab nrab txhawb cov kev xeem cuam tshuam ntawm-20 degree(absorbed zog Ntau dua los yog sib npaug rau 27 J), thiab cov qhab-nees customized tuaj yeem ua tiav-40 degreetoughness rau txias- cheeb tsam load-cov haujlwm ua haujlwm.
2. Hom Load-Bearing Application Scenarios
Kev tsim choj: Choj girders, tiv thaiv - kev sib tsoo teeb meem, thiab kev txhawb nqa hauv ntug hiav txwv lossis thaj chaw muaj kev lag luam (tiv thaiv corrosion los ntawm ntsev tsuag, kua qaub los nag, thiab muaj kuab paug).
Chaw nres nkoj thiab cov khoom siv marine: Chaw nres nkoj crane cov khoom siv, cov thawv ntim khoom, thiab kev txhawb nqa ntawm ntug dej hiav txwv (hloov mus rau siab - av noo, ntsev- cov chaw ib puag ncig).
High-cov khoom siv hauv tsev: Sab nraud load-cov kabmob, cov phab ntsa shear, thiab lub ru tsev trusses (txo cov nqi saib xyuas rau lub tsev facades thaum ua kom muaj kev ruaj ntseg ntawm cov qauv).
Heavy machinery thav duab: Chassis ntawm mining machinery, cov khoom siv tsim kho, thiab tsheb thauj mus los (thov cov khoom hnyav thiab hnyav sab nraum zoov ua haujlwm).
3. Kev txiav txim siab tseem ceeb rau Load-Bearing Structure Design
Vuam txheej txheem tswj: Siv qhov sib txuam siab -lub zog huab cua steel vuam cov ntaub ntawv (xws li, E8018-W electrodes, ER110S-G xov hlau) kom ntseeg tau tias thaj chaw vuam muaj zog sib npaug thiab corrosion tsis kam rau lub hauv paus hlau. Tswj vuam cua sov input kom tsis txhob txo cov hlau lub toughness nyob rau hauv lub tshav kub-cuam tshuam cheeb tsam (HAZ).
Thickness xaiv: Rau qhov loj - ncua lossis hnyav- cov qauv thauj khoom, xaiv cov phaj tuab tsim nyog raws li kev suav cov qauv (Q550NH muaj nyob rau hauv thicknesses ntawm 6-100 mm rau txawv load scenarios).
Corrosion tiv thaiv optimization: Txawm hais tias Q550NH tsim ib qho kev tiv thaiv patina ib txwm muaj, rau qhov tseem ceeb ntawm kev thauj khoom -cov khoom siv hauv qhov chaw huab cua (xws li, sab ntug dej hiav txwv), siv cov txheej nyias nyias ntawm pob tshab breathable sealant kom nrawm tsim patina thiab txuas lub neej kev pab cuam.
Kev kho kev ntxhov siab: Tom qab vuam lossis txias txias, ua kom qis -qhov kub thiab txias annealing (200-300 degree) kom tshem tawm cov kev ntxhov siab uas seem, txo qhov kev pheej hmoo ntawm kev ntxhov siab corrosion tawg nyob rau hauv ntev - lub sij hawm load.
