E312 vuam pas nrig Ua tau raws li AWS E312-17 qhov kev qhia tshwj xeeb thiab yog qhov kev daws teeb meem zoo tshaj plaws rau kev siv tes ua stick arc vuam (SMAW) uas muaj ntau yam, muaj kev ncaj ncees siab. Tsim los rau kev vuam txhua qhov chaw, lub electrode ua tau zoo hauv kev tsim khoom thiab kho cov xwm txheej nyuaj nrog kev hloov pauv kev vuam. Nws qhov txiaj ntsig tseem ceeb yog nws lub peev xwm los tsim cov khoom austenitic muaj zog, tiv taus tawg ntawm ntau yam khoom siv nyuaj, suav nrog ntau yam hlau tsis xeb, kev sib xyaw ua ke ntawm cov hlau sib xyaw thiab cov hlau sib xyaw siab, tshwj xeeb tshaj yog rau cov xwm txheej uas kev tiv taus thermal shock tseem ceeb heev.
E312 electrodes siv cov khoom siv austenitic electrode deposit uas muaj cov chromium ntau thiab cov nickel ntau. Cov khoom sib xyaw tshwj xeeb no ua rau nws tiv taus kub tawg zoo heev, uas yog qhov teeb meem tshwm sim thaum vuam cov pob qij txha uas muaj kev txwv ntau, cov hlau sib txawv, lossis cov hlau yooj yim embrittled. Cov hlau vuam uas tshwm sim ua rau pom lub zog tensile zoo heev ntawm ob qho tib si chav tsev thiab qhov kub siab, thiab muaj kev ua haujlwm zoo thiab kev cuam tshuam.
E312-17 yog qhov tshwj xeeb hauv nws cov khoom siv tswj hwm zoo.E312 vuam pas nrig (AWS E312-17) zoo ib yam li E312-16 electrode, tab sis nws cov txheej txheem txheej tau ua rau cov ntsiab lus silicon ntau ntxiv thiab txo cov ntsiab lus titanium. Qhov kev kho kom zoo no ua rau arc ruaj khov hauv txhua qhov chaw, tshwj xeeb tshaj yog nyob rau hauv cov fillet welds nyuaj thiab cov vertical up welds. Cov tshuaj lom neeg no tsim cov nyhuv "jet arc" tshwj xeeb thaum siv rau hauv cov fillet welds kab rov tav.
Lub E312 electrode muaj ntau yam kev siv. Nws yog qhov siv tau zoo rau kev koom ua ke cov hlau sib txawv, cov hlau tsis xeb austenitic rau cov hlau carbon lossis cov hlau tsis tshua muaj hlau, thiab cov hlau nickel siab rau cov hlau. Nws zoo heev rau kev siv overlay thiab cladding qhov twg xav tau kev hnav thiab kev tiv thaiv corrosion. Lub electrode kuj tseem raug saib xyuas zoo hauv kev kho vuam ntawm cov castings uas yooj yim tawg. Cov lag luam tseem ceeb uas vam khom nws cov kev ua tau zoo suav nrog kev tsim hluav taws xob, kev ua tshuaj lom neeg thiab petrochemical, pulp thiab ntawv, thiab kev tsim khoom siv hnyav thiab kev saib xyuas.
E312 vuam pas nrig (AWS E312-17) muaj kev ua haujlwm ntau yam thiab kev ntseeg siab rau cov haujlwm vuam uas xav tau kev vuam txhua qhov chaw, tiv taus kev tawg zoo heev thiab muaj zog heev. Nws cov tshuaj lom neeg tshwj xeeb ua rau nws muaj qhov zoo heev "jet arc", uas ua rau cov vuam kab rov tav zoo heev, muab rau tus neeg vuam nrog kev tswj hwm zoo dua thiab cov yam ntxwv tso tawm. Cov hlau vuam austenitic ua tau zoo tiv taus kev tawg kub thiab dilution, ua rau nws yog lub electrode tseem ceeb rau kev sib txuas tseem ceeb xws li cov hlau sib txawv, cov hlau alloy siab, thiab cov haujlwm kho nyuaj.
Lub sijhawm tshaj tawm: Lub Xya Hli-31-2025