E312 Vuam Qws, tshwj xeeb tshaj yog xaiv ua AF312-16 nyob rau hauv cov npe lag luam dav dav, sawv cev rau cov khoom siv tshwj xeeb uas ua raws li ob qho tib si Suav teb tus qauv GB / T E312-16 thiab thoob ntiaj teb lees paub AWS A5.4 E312-16 specification. Qhov kev faib tawm no txhais nws ua qhov kev daws teeb meem tseem ceeb rau cov ntawv thov vuam uas muaj cov qib stainless hlau tshwj xeeb thiab cov ntaub ntawv nyuaj.
Lub hauv paus metallurgy ntawm lub electrode no yog tsim los ntawm Cr29Ni9 duplex stainless hlau muaj pes tsawg leeg. Nws cov titanium-calcium coated electrode txheej ua rau kev ua haujlwm ntau yam nrog ob qho tib si AC thiab DC fais fab qhov chaw, xa cov arc stability zoo heev, tsawg spatter, thiab du slag tshem tawm. Qhov tseem ceeb, cov hlau weld tso suav nrog cov kev ntxiv tswv yim ntawm molybdenum thiab nitrogen, ua ke nrog cov ntsiab lus carbon tsawg heev. Cov tshuaj lom neeg no muab E312 Welding Rod nrog kev tiv thaiv zoo rau kev tawg solidification thiab kev tiv thaiv corrosion zoo dua, tshwj xeeb tshaj yog kev ua tau zoo tiv thaiv kev ntxhov siab corrosion cracking (SCC).
Tsim los rau cov ntawv thov tseem ceeb, lub hom phiaj tseem ceeb ntawmE312 Vuam Qwsyog qhov kev sib koom ua ke thiab kho cov hlau tsis xeb hom 29-9 thiab cov castings. Nws cov yam ntxwv tshwj xeeb ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev vuam cov hlau sib txawv (xws li kev sib koom ua ke cov hlau tsis xeb austenitic rau cov hlau carbon lossis cov hlau tsis tshua muaj hlau) thiab rau cov ntawv thov uas muaj qhov tsis zoo xws li kev tawg kub thiab porosity. Qhov yooj yim ntawm kev siv los ntawm nws cov txheej txheem ntxiv txhim kho nws qhov kev tsim nyog rau cov vuam nyuaj lossis tseem ceeb.
Tshaj li nws cov khoom siv alloying tseem ceeb, cov qauv electrode tau sib npaug zoo kom ua tau zoo tshaj plaws. Hom txheej titanium-calcium (titania-lime) tsis yog tsuas yog txhawb nqa cov yam ntxwv ua haujlwm zoo heev xwb tab sis kuj pab txhawb rau kev ruaj khov ntawm lub arc thiab qhov zoo ntawm cov hlau tso. Cov hlau txuas microstructure siv cov txiaj ntsig ntawm cov qauv duplex.,kev sib txuas lub zog ntawm ferrite nrog rau lub zog thiab kev tiv thaiv corrosion ntawm austenite,ntxiv zog los ntawm cov txiaj ntsig zoo ntawm Mo thiab N.
Cov yam ntxwv ntawm kev siv tshuabE312 Vuam Qws, tshwj xeeb tshaj yog nws cov AF312-16 variant uas tau ua pov thawj, tsim kom nws ua ib qho cuab yeej tseem ceeb hauv cov lag luam xav tau xws li kev ua tshuaj lom neeg, kev tsim hluav taws xob, thiab kev tsim kho dej hiav txwv. Nws qhov kev sib xyaw ua ke ntawm kev tiv thaiv kab nrib pleb siab, kev ua haujlwm zoo dua corrosion–tshwj xeeb tshaj yog tawm tsam SCC–thiab qhov vuam zoo heev rau cov ntaub ntawv nyuaj thiab cov pob qij txha sib txawv ua kom muaj kev ruaj khov thiab lub neej ntev hauv cov chaw ua haujlwm nyuaj tshaj plaws, ua kom nws ruaj khov ua cov khoom siv vuam zoo tshaj plaws.
Lub sijhawm tshaj tawm: Lub Yim Hli-05-2025