1. Kev qaug zog muaj zog
Q500NH, zoo li lwm cov neeg muaj zog loj, ua rau muaj kev nkees nkees ua hauj lwm zoo nyob rau hauv chaw thau khoom cyclic.
TusQaug zog(cov kev txwv siab ntev) feem ntau yog nyob ib puag ncig40-50% ntawm nws lub zog tensile(uas yog ntau tshaj lossis sib npaug nrog 500 MPa rau Q500NH). Qhov no qhia tau tias muaj kev zam kev ua kom muaj zog txwv nyob rau hauv ntau ntawm200-250 mpaRau siab-voj voog rog (10⁶-10⁷ mus los mus).
Qhov tseem ceeb yog nyob ntawm kev ntxhov siab piv (R), nto tiav, thiab muaj ntawm cov lus tsis yog lossis Weldments.
2. Tus neeg muaj hluav taws xob ntawm huab cua
TusNajHauv Q500nh qhia nwsHuab Cua Kuj(Zoo ib yam li Astm A588 lossis Corten cov hlau). Txheej oxide tiv thaiv txo qis corrosion-rog degradation nyob rau sab nraum zoov ib puag ncig.
Txawm li cas los xij, yog hais tias nto yog pitted vim corrosion,qaug zog tawg yuav pib ua ntej, txo qis lub neej.
3. Weld thiab coch cuam tshuam
Welded pob qij txhaho cuam tshuam rau qaug zog qaug zog. Kev kho mob tom qab weld (piv txwv li, sib tsoo, peening) tuaj yeem txhim kho kev qaug zog lub neej.
Ceeb Toom Tsis Txaus: High-lub zog hlau zoo li Q500NH yog qhov nkag siab txog kev ntxhov siab (ntse fab Kev tsim qauv tsim nyog (cov kev hloov kom du) yog qhov tseem ceeb heev.
4. Kev sib piv nrog lwm cov hlau
Piv rau cov hlau me (piv txwv li, Q235), Q500NH muaj lub zog zoo li qub tab sis yuav qhia tau zoo ib yam lossis ua tau zoo dua.
Piv rau quenched & tempered steels (piv txwv li, q690), nws yuav muaj kev qaug zog me ntsis vim yog kev sib txawv ntawm microstructure.
5. Cov Qauv & Kev Ntsuas
Qaug zog cov ntaub ntawv rau Q500NH tuaj yeem nrhiav tau hauvSuav Cov Qauv (GB / T 1591, GB / T 4171)lossis los ntawm kev kuaj cov khw lag luam.
Tsh puab curves(Kev ntxhov siab thiab kev ntxhov siab mus rau qhov tsis ua haujlwm) yuav tsum tau hais txog kev thauj khoom tshwj xeeb.
Tag
Q500nh muajzoo nkees ua hauj lwmRau cov ntawv thov cov txheej txheem, tshwj xeeb tshaj yog nyob rau hauv kev xeb ib puag ncig, tab sis nws ua tau zoo nyob ntawm seb:
Qhov xwm txheej nto(zam corrosion pits).
Tsim cov ntsiab lus(txo cov kev ntxhov siab ntxhov siab).
Vuam zoo(Siv cov tswv yim zoo thiab kev kho mob tom qab).
