Muaj feem xyuam rau siab -Tsuas Kub
Nws tuaj yeem tswj kev ua haujlwm ruaj khov hauv lubQhov ntsuas kub ntawm 200℃txog 400 degreerau ntev - siv sij hawm:
Nyob rau hauv qhov kub thiab txias, cov ntsiab lus alloy (Cu, Cr, Ni) hauv Q355NH tseem tuaj yeem tsim thiab tswj tus kheej ruaj khov - kho patina, uas tseem ua lub luag haujlwm tiv thaiv corrosion
Nws cov khoom siv hluav taws xob tseem ceeb (yield zog ntau dua lossis sib npaug ntawm 355 MPa, lub zog tensile 470-630 MPa) tsuas yog poob qis me ntsis (tsawg dua 10%), uas tseem tuaj yeem ua tau raws li cov kev cai ntawm kev siv cov qauv siv.
Kev txwv nyob rau hauv ib puag ncig kub siab
Thaum qhov kub siab tshaj 400 degree, kev ua haujlwm ntawm Q355NH yuav cuam tshuam rau qhov sib txawv:
Corrosion tsis kam poob: Cov qauv patina yuav raug rhuav tshem, thiab cov ntsiab lus hlau yuav nrawm oxidation, ua kom xoob, tsis yog - txheej tiv thaiv oxide, uas yuav plam tus kheej - kho muaj peev xwm, thiab tus nqi corrosion yuav nce ntxiv.
Mechanical zog poob: Thaum qhov kub siab tshaj 500 degree, lub sab hauv microstructure ntawm cov hlau yuav pib hloov, lub zog tawm los thiab lub zog tensile yuav txo qis, thiab cov load-cov kabmob muaj peev xwm yuav nyuaj rau lav.
Cov Ntsiab Lus Tseem Ceeb rau Siab -Kev Siv Kub
Yog tias siv nyob rau hauv thaj tsam ntawm 200-400 degree, nws yog ib qho tsim nyog kom tsis txhob muaj kev sib cuag nrog cov xov xwm corrosive (xws li cov pa kub kub uas muaj cov tshuaj chloride ions), uas yuav ua rau kev puas tsuaj ntawm patina.
Kev tshuaj xyuas tsis tu ncua ntawm cov txheej txheej oxide saum npoo yog xav tau. Yog tias pom pom tias patina puas lawm, nws tuaj yeem kho tau los ntawm kev siv lub tshuab hluav taws xob xeb xeb.
Nws tsis pom zoo kom siv Q355NH nyob rau hauv ib puag ncig nrog ntev -lub sij hawm kub siab tshaj 400℃. Thaum tshav kub kub tshwj xeeb- cov hlau tsis muaj zog yuav tsum tau xaiv
