Cov qoob loo loj hlob thiab coarsening ntawm SPA-C weathering steel phaj
Lub℃ntawm grain coarsening nyob rau hauv SPA-C weathering steel phajnyob ntawm nws cov tshuaj muaj pes tsawg leeg.
Cov hlau uas muaj cov pa roj carbon, manganese, thiab phosphorus feem ntau yuav tsim cov nplej ntxhib, thaum cov khoom xws li txhuas, titanium, niobium, thiab zirconium tuaj yeem cuam tshuam cov qoob loo loj hlob.
Raws li qhov tshwm sim, manganese-silicon deoxidized steels zoo li ua kom pom ib coarse-grained qauv. Copper-raws li thiab aluminium alloy steels kuj tseem tuaj yeem pom cov nplej coarsening thaum raug cua sov ntau dhau.
Txaus siab rau tsim cov qauv Widmanstätten
SPA-C weathering steel phaj yog raug rau kev tsim ntawm Widmanstätten cov qauv nyob rau hauv tshaj - kub.
Nyob rau hauv lub xeev no, cov qauv metallographic ua thicker thiab fibrous kev ntxhib los mos widens.
Cov qauv Widmanstätten zoo sib xws kuj tuaj yeem pom hauv cov tooj liab thiab txhuas bronzes.
Piv nrog rau cov ntxhib ntxhib zoo tib yam -cov qauv ua tau zoo, cov qauv Widmanstätten muaj qhov cuam tshuam tsis zoo rau plasticity thiab ductility.
Kev cuam tshuam ntawm overheating rau cov khoom siv kho tshuab
Thaum SPA-C weathering steel phaj raug cua sov ntau dhau, kev loj hlob ntawm cov nplej ua rau txo qis zog thaum kho cua sov tom qab thiab ua rau txo qis ntawm pob txha tawv tom qab quenching.
Thaum kho cua sov, qhov sib txawv ntawm tus cwj pwm deformation ntawm ntau yam microstructural mechanisms tuaj yeem ua rau tawg yooj yim. Tib lub sijhawm, kev hloov pauv theem hauv microstructure tuaj yeem cuam tshuam ntxiv rau qhov toughness ntawm SPA-C steel.
Los ntawm kev ua tib zoo tswj cov cua kub thiab tuav lub sij hawm ntawm qhov kub thiab txias, qhov kev pheej hmoo ntawm overheating thiab cuam tshuam microstructural puas tuaj yeem txo qis.
09CrCuSb steel yog dab tsi?
09CrCuSb, tseem hu ua ND steel, yog ib qho qis - alloy corrosion- cov hlau tsis muaj zog tshwj xeeb uas tsim los siv rau hauv cov kua qaub dew point corrosion ib puag ncig. Nws muaj cov ntsiab lus alloying xws li chromium (Cr), tooj liab (Cu), thiab antimony (Sb), uas ua rau nws muaj zog tiv thaiv sulfuric acid thiab flue gas corrosion.
Vim li cas 09CrCuSb hu ua ND steel?
"ND" sawv rauNitric acid thiab Dew -point corrosion kuj. Cov hlau tau tsim los tiv thaiv qis -kub acid condensation corrosion feem ntau pom nyob rau hauv boilers, heat exchangers, thiab flue gas systems.
Puas yog 09CrCuSb steel muaj qhov zoo weldability?
Yog lawm. 09CrCuSb steel muaj qhov zoo weldability. Cov txheej txheem vuam txheej txheem xws li SMAW, SAW, thiab TIG tuaj yeem siv tau, tab sis qis -hydrogen electrodes thiab preheating kom zoo yuav raug pom zoo rau cov ntu tuab.
Puas yog 09CrCuSb haum rau siab -kev pabcuam kub?
09CrCuSb yog tsim los rau nruab nrab - qhov kub thiab txias qhov chaw uas acid dew point corrosion tshwm sim. Nws tsis yog npaj rau siab heev - qhov kub siab ntawm lub nkoj siv yam tsis muaj kev ntsuam xyuas zoo.
