Alloy 31, tseem hu ua UNS N08031 lossis 1.4562, yog hlau -nickel-chromium- molybdenum alloy txhim kho nrog nitrogen thiab tooj liab, muab kev ua tau zoo hauv kev teeb tsa corrosive.
Hauv qab no, peb tshuaj xyuas cov yam ntxwv tshwj xeeb thiab kev siv ntawm Alloy 31 flanges.
Alloy 31 Flange Nta
1. Exceptional Resistance rau Corrosion nyob rau hauv Acid Media
Alloy 31 flanges muab kev ua haujlwm zoo tshaj plaws nyob rau hauv sulfuric thiab phosphoric acid ib puag ncig thoob plaws ntau qhov ntau thiab qhov kub thiab txias.
Cov hlau alloy siab chromium (26-28%) thiab npib tsib xee (30-32%) cov ntsiab lus tso cai rau nws los tiv thaiv oxidizing acids, thaum tseem ceeb molybdenum ntxiv txhim khu kev tiv thaiv kom txo cov acids. Qhov kev muaj peev xwm dual no ua rau Alloy 31 flanges zoo tagnrho rau cov kav dej tuav cov sulfuric acid, phosphoric acid, thiab txawm tias nitric-hydrofluoric acid sib tov, feem ntau ua tau zoo tshaj Alloy 20 thiab cov qib qib super-duplex hauv cov xwm txheej tshwj xeeb.
2. Siab Resistance rau Localized Corrosion
Cov ntaub ntawv muab kev tiv thaiv zoo heev tiv thaiv pitting thiab crevice corrosion nyob rau hauv halide- muaj ib puag ncig.
Pitting thiab crevice corrosion yog qhov ua rau flange tsis ua haujlwm hauv dej ntsev thiab chloride- nplua nuj ua. Alloy 31 boasts Pitting Resistance Equivalent Number (PREN) feem ntau tshaj 50. Tus nqi PREN siab no qhia tau hais tias muaj zog tiv thaiv kev tawm tsam hauv zos, ua kom muaj kev ncaj ncees ntawm lub ntsej muag flange thiab gasket chaw zaum txawm nyob hauv qhov kub, chlorinated seawater lossis dej brackish.
3. Superior Mechanical Strength
Alloy 31 nthuav tawm cov txiaj ntsig ntau dua thiab lub zog tensile piv rau cov pa austenitic stainless hlau.
Qhov sib ntxiv ntawm nitrogen rau cov alloy matrix tsis tsuas yog txhim kho corrosion kuj tab sis kuj ua raws li interstitial strengthener. Alloy 31 flanges tuav lawv cov qauv kev ncaj ncees nyob rau hauv siab siab thiab siab kub. Lub zog siab no tso cai rau cov kws tsim khoom tuaj yeem txo cov phab ntsa tuab hauv cov kav dej tsim yam tsis muaj kev cuam tshuam txog kev nyab xeeb, ua rau sib dua thiab muaj nqi ntau dua - cov tshuab siv tau zoo.
4. Zoo Weldability thiab Fabrication
Alloy 31 flanges tuaj yeem welded thiab fabricated yam tsis tas yuav tsum tau tshaj tawm -weld tshav kub kho kom muaj kev tiv thaiv corrosion.
Tsis zoo li qee qhov siab - alloy cov ntaub ntawv uas ua nkig los yog poob corrosion kuj tom qab vuam, Alloy 31 tuav nws cov khoom ductility thiab tsis kam nyob rau hauv cov mob welded. Cov yam ntxwv no tseem ceeb heev rau flanges, uas feem ntau yuav tsum tau vuam rau cov yeeb nkab kawg (xws li lub caj dab weld los yog plam- ntawm flanges), kom ntseeg tau tias qhov kub hnyiab tau rau thaj tsam (HAZ) tsis dhau los ua qhov tsis muaj zog hauv lub cev.
Kev siv ntawm Alloy 31 Flanges
1. Tshuaj thiab Petrochemical ua
Alloy 31 flanges yog cov khoom tseem ceeb hauv kev tsim cov tshuaj zoo, tshwj xeeb tshaj yog nyob rau qhov twg sulfuric thiab phosphoric acids raug tswj.
Hauv cov nroj tsuag tshuaj, flanges feem ntau yog cov ntsiab lus xau qhov twg corrosion pib. Alloy 31 yog siv dav hauv cov khoom siv hluav taws xob, cov kav dej, thiab cov hlab ntsha reactor koom nrog hauv kev tsim cov phosphoric acid ntawm cov txheej txheem ntub dej. Nws tiv taus cov impurities pom nyob rau hauv cov kua qaub, xws li chlorides thiab fluorides, uas feem ntau ua kom corrosion nyob rau hauv lwm yam alloys.
2. Pulp thiab ntawv kev lag luam
31 alloy yog dav siv nyob rau hauv bleaching nroj tsuag, tshwj xeeb tshaj yog nyob rau hauv chlorine dioxide theem uas siab corrosion kuj yuav tsum tau.
Cov txheej txheem niaj hnub no siv cov txheej txheem oxidizing aggressive uas muaj corrosive heev rau tus qauv 316L lossis 317L stainless hlau. Alloy 31 flanges tiv taus qhov hnyav ib puag ncig ntawm chlorine dioxide bleaching towers thiab ntxhua khaub ncaws, ua kom lub neej kev pab cuam ntawm cov cuab yeej siv thiab tiv thaiv cov nqi raug kaw vim qhov xau lossis flange lub ntsej muag yaig.
3. Roj thiab roj Extraction
Alloy 31 yog siv rau hauv kev pabcuam roj qaub thiab kev sib txuas ntawm cov raj xa dej vim nws tsis kam rau hydrogen sulfide thiab chlorides.
Hauv cov roj thiab roj, tshwj xeeb tshaj yog nyob rau sab ntug dej hiav txwv, cov khoom siv raug rau cov roj qaub (H₂S) thiab siab -chloride tsim dej. Alloy 31 flanges tiv thaiv sulfide kev nyuaj siab tawg (SSC) thiab kev ntxhov siab corrosion cracking (SCC), ua rau lawv muaj kev nyab xeeb thiab txhim khu kev qha rau cov khoom siv hluav taws xob siv cov dej hiav txwv ua cov dej txias thiab rau cov kav dej thauj cov kua qaub.
4. Ib puag ncig muaj kuab paug tswj
Cov flanges no ua haujlwm tseem ceeb hauv kev sib txuas hauv Flue Gas Desulfurization (FGD) systems rau cov nroj tsuag tsim hluav taws xob.
FGD tshuab ntxuav cov sulfur dioxide los ntawm cov pa tawm, tsim kom muaj cov slurry uas muaj sulfuric acid thiab chlorides. Alloy 31 flanges yog siv nyob rau hauv lub absorbers, ductwork, thiab tshuaj tsuag headers ntawm cov tshuab. Lawv cov kev tiv thaiv rau kev puas tsuaj- corrosion kuj yog qhov tseem ceeb ntawm no, vim tias cov slurry tuaj yeem ua rau lub cev abrasive nrog rau cov tshuaj lom neeg.
5. Mining thiab Ore ua
31 alloy khoom yog zoo tagnrho rau acid leaching tshuab siv nyob rau hauv lub extraction ntawm tooj liab, npib tsib xee, thiab kub.
Hydrometallurgy suav nrog kev siv cov kua qaub kom yaj cov hlau los ntawm cov ore. Cov kav dej uas thauj cov leachates no yuav tsum muaj kev sib txuas uas tuaj yeem tuav cov kua qaub siab thiab siab kub. Alloy 31 flanges muab qhov tsim nyog resilience tiv thaiv cov erosive -corrosive xwm ntawm ore slurries, kom ntseeg tau tias leak- ua haujlwm dawb nyob rau hauv tej thaj chaw deb mining qhov chaw uas kev kho nyuaj.
Xaus
Alloy 31 flanges tshwj xeeb tsis kam rau sulfuric acid, phosphoric acid, chlorides, thiab kev ntxhov siab corrosion cracking -ua ke nrog cov khoom siv kho tshuab txhim khu kev qha- ua rau lawv qhov kev xaiv zoo tshaj plaws rau kev ua tshuaj, FGD systems, pulp thiab ntawv chaw, offshore installation, thiab roj av refining.
Nrog peb pab neeg muag khoommus yuav Alloy 31 flanges rau koj daim ntawv thov-peb yuav muab cov ntaub ntawv pov thawj, cov ntaub ntawv kuaj corrosion, thiab kev taw qhia kev teeb tsa.
