Cov Hluav Taws Xob Nickel Basesawv cev rau ib pawg tshwj xeeb ntawm cov khoom siv vuam uas tsim los rau kev koom ua ke cov hlau ua tau zoo thiab cov hlau sib txawv. Lub Ni327-3 (AWS A5.11 ENiCrMo-3) variant muaj cov txheej txheem sodium hydrogen tsawg thiab ua haujlwm ntawm DCEP (Direct Current Electrode Positive) polarity. Lub electrode no tsim cov hlau uas muaj cov yas zoo heev, tawv, thiab tsis kam tawg, tswj tau lub zog siab thiab tsis kam xeb zoo dua ntawm ob qho tib si chav tsev thiab qhov kub siab. Nws cov tshuaj lom neeg muaj pes tsawg leeg ua kom ntseeg tau tias muaj kev ua tau zoo hauv cov chaw xav tau uas cov electrodes txheem yuav tsis ua haujlwm.
Cov khoom siv hlau ntawm cov electrodes no ua rau lawv tsim nyog rau kev vuam cov hlau nickel-chromium-molybdenum. Cov hlau uas tau tso rau hauv feem ntau muaj kwv yees li 55% nickel, 20-23% chromium, thiab 8-10% molybdenum, tsim kom muaj cov qauv microstructure uas tiv taus ntau yam kev xeb suav nrog kev tawg thiab kev ntxhov siab corrosion. Cov khoom siv kho tshuab suav nrog lub zog tensile tshaj 760 MPa thiab cov nqi elongation siab dua 27%, ua kom muaj zog thiab yooj ywm hauv qhov sib koom ua ke.
Cov ntawv thov kev lag luam rauCov Hluav Taws Xob Nickel Basenpog ntau yam kev lag luam suav nrog kev ua tshuaj lom neeg, kev tsim hluav taws xob, thiab kev tsim kho dej hiav txwv. Lawv siv dav hauv kev vuam cov khoom tseem ceeb xws li reactors, cov khoom hloov pauv cua sov, thiab cov kav dej uas ua haujlwm hauv qab qhov kub siab thiab cov xwm txheej corrosive. Cov electrodes qhia tau tias muaj txiaj ntsig zoo hauv kev koom ua ke cov hlau sib txawv thiab rau kev vuam overlay ntawm cov hlau carbon, muab ob qho tib si kev lag luam thiab kev siv tshuab hauv kev tsim khoom siv thiab kho.
Kev tuav thiab vuam kom zoo yog qhov tseem ceeb rau kev ua haujlwm zoo tshaj plaws nrog cov electrodes no. Ua ntej ziab ntawm 300°C rau 60 feeb yog pom zoo kom tshem tawm cov dej noo thiab tiv thaiv cov teeb meem cuam tshuam nrog hydrogen. Cov neeg ua haujlwm yuav tsum tswj cov arc luv luv thiab cov cua sov nruab nrab kom khaws cov yam ntxwv ntawm cov hlau tso. Qhov kub ntawm Interpass yuav tsum tswj tau qis dua 150°C, thiab kev ntxuav kom huv si ntawm cov hla dhau yog qhov tsim nyog los xyuas kom meej tias cov welds tsis muaj qhov tsis xws luag nrog kev tiv thaiv corrosion zoo tshaj plaws.
Cov Hluav Taws Xob Nickel Basemuab cov kev daws teeb meem tseem ceeb rau cov ntawv thov vuam sib tw thoob plaws ntau yam lag luam. Lub Ni327-3 variant, ua tau raws li AWS ENiCrMo-3 cov lus qhia, muab kev ua tau zoo txhim khu kev qha los ntawm nws qhov kev sib xyaw ua ke ntawm cov khoom siv kho tshuab thiab kev tiv thaiv corrosion. Cov electrodes no txuas ntxiv ua haujlwm ua cov khoom tseem ceeb hauv kev tswj hwm thiab tsim cov khoom siv kev lag luam uas ua haujlwm nyob rau hauv cov xwm txheej ib puag ncig hnyav.
Lub sijhawm tshaj tawm: Cuaj hlis-09-2025