1. Hastelloy G-30 Alloy yog dab tsi, thiab cov khoom tshwj xeeb twg ua rau nws cov yeeb nkab seamless yog qhov tseem ceeb?
Hastelloy G-30® (UNS N06030) yog npib tsib xee-chromium-hlau alloy tshwj xeeb tsim los nrog cov qib siab chromium thiab sib ntxiv ntawm tungsten thiab tooj liab. Qhov no muaj pes tsawg leeg muab nws tshwj xeeb, ntau yam corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv heev oxidizing thiab complex tshuaj ib puag ncig uas muaj zog acids, xws li sib tov ntawm sulfuric, nitric, thiab hydrofluoric acids. Tsis zoo li alloys optimized rau ntshiab txo tej yam kev mob (xws li Hastelloy B tsev neeg), G-30 yog ib tug sib npaug alloy rau tov kua qaub cov kev pab cuam.
Daim ntawv seamless yeeb nkab ntawm no alloy yog tsim los ntawm cov txheej txheem xws li extrusion los yog rotary piercing, tsim ib tug nruam, homogeneous cross-section yam tsis muaj longitudinal welds. Daim ntawv no muaj txiaj ntsig tshwj xeeb rau ntau qhov laj thawj:
Txhim kho Corrosion Integrity: Qhov tsis muaj qhov vuam seam tshem tawm qhov muaj peev xwm tsis muaj zog qhov twg tshav kub- cuam tshuam thaj chaw (HAZ) microstructural variations los yog weldment imperfections tuaj yeem pib corrosion hauv kev tawm tsam.
Superior Mechanical Consistency: Seamless pipes muab cov qauv zoo li qub thiab cov khoom siv kho tshuab (lub zog, ductility) nyob ib ncig ntawm tag nrho cov ncig, uas yog qhov tseem ceeb rau kev siv siab -.
Txhim kho Nto tiav: Sab hauv thiab sab nraud ntawm cov kav dej seamless feem ntau smoother thiab zoo ib yam, txo qhov chaw rau pitting lossis crevice corrosion pib. Qhov no yog qhov txiaj ntsig tseem ceeb thaum tuav cov kua dej uas ua rau fouling lossis muaj cov khib nyiab tshem tawm.
Hauv cov ntsiab lus, Hastelloy G-30 seamless kav sib txuas ua ke ntau yam corrosion tsis zoo-resistant alloy nrog ib txoj kev tsim khoom uas ua rau nws muaj kev ntseeg siab, ua rau lawv qhov kev xaiv tshwj xeeb rau cov khoom tseem ceeb, siab - siab, thiab high-purity corrosive fluid hloov kab.
2. Hauv cov ntawv thov tshwj xeeb dab tsi yog Hastelloy G-30 cov kav dej seamless suav tias yog qhov tseem ceeb, thiab vim li cas?
Hastelloy G-30 cov kav dej seamless yog qhov tseem ceeb hauv cov txheej txheem tshuaj lom neeg (CPI) thiab cov haujlwm muaj feem xyuam uas cov cuab yeej yuav tsum tiv taus qhov sib xyaw ua kua qaub ntau tshaj plaws. Lawv siv yog tsav los ntawm kev xav tau los tiv thaiv kev puas tsuaj loj, ua kom muaj kev nyab xeeb ntawm cov nroj tsuag, thiab txo cov nqi qis.
Cov ntawv thov tseem ceeb suav nrog:
Phosphoric Acid Production & Handling: Qhov no yog daim ntawv thov kev lag luam. G-30 ua pov thawj zoo heev rau kev sib kis-laden, siab-kub ntub- txheej txheem phosphoric acid, uas muaj corrosive impurities xws li sulfuric acid, hydrofluoric acid, fluorosilicic acid, thiab chlorides. Seamless kav yog siv rau qhov tseem ceeb reactor pub kab, rhaub coils, thiab evaporator circuits.
Sulfuric Acid Pickling thiab Recovery Systems: Hauv steel mills thiab hlau tiav cov nroj tsuag, G-30 tawm tsam ob qho tib si sulfuric acid tov thiab oxidizing cov kab mob xws li ferric thiab cupric ntsev. Seamless kav yog siv nyob rau hauv high-temperature seem ntawm acid rov qab (ROSE) nroj tsuag thiab pickling kab khoom.
Complex Chemical Synthesis: Hauv kev tsim cov tshuaj agrochemicals, tshuaj, thiab cov tshuaj tshwj xeeb uas muaj kev sib xyaw ntawm nitric, sulfuric, thiab hydrofluoric acids (xws li, hauv cov txheej txheem nitration lossis sulfonation), G-30 piping ua kom muaj kev ncaj ncees.
Nuclear Fuel Reprocessing: Nws tsis kam rau nitric acid thiab fluoride- muaj cov kev daws teeb meem ua rau nws tsim nyog rau qee lub tshuab ntxiv hauv qhov xav tau no.
Kev Tiv Thaiv Kev Ua qias tuaj & Scrubbers: Cov tshuab hluav taws xob hluav taws xob desulfurization (FGD) thiab lwm cov tshuab ntxhua khaub ncaws tuav cov kua qaub kua qaub feem ntau qhia G-30 rau qhov tseem ceeb ducting thiab hloov kab, tshwj xeeb tshaj yog nyob rau hauv cov chlorides.
Kev tsim kho seamless raug xaiv rau cov ntawv thov no vim qhov siab corrosivity, siab, thiab qhov tseem ceeb ntawm cov kev pabcuam, qhov twg qhov ntev weld seam sawv cev rau qhov tsis txaus ntseeg.
3. Hastelloy G-30 piv rau lwm yam corrosion-resistant alloys zoo li 316L Stainless hlau los yog Hastelloy C-276 hauv cov ntawv thov yeeb nkab?
Kev xaiv cov khoom siv rau kev pabcuam corrosive yog ib txoj haujlwm ntawm ib puag ncig tshwj xeeb. Hastelloy G-30 nyob hauv ib qho chaw sib txawv, feem ntau cuam tshuam qhov sib txawv ntawm cov hlau tsis muaj hlau thiab cov hlau molybdenum nickel alloys siab.
Vs . 316L/317L Stainless Steels: Austenitic stainless hlau cia siab rau cov txheej txheem chromium oxide passive rau kev tiv thaiv. Cov txheej no ua rau muaj cov chlorides (ua rau pitting / crevice corrosion) thiab tsis yog -oxidizing acids (xws li dilute sulfuric). Hastelloy G-30 ua tau zoo tshaj cov hlau tsis muaj steel hauv cov xwm txheej no. Nws muaj kev tiv thaiv zoo tshaj rau chloride-vim kev ntxhov siab corrosion cracking (SCC), pitting nyob rau hauv acidic chloride media, thiab dav corrosion nyob rau hauv sulfuric thiab phosphoric acids. Kev hloov kho mus rau G-30 yog qhov tseem ceeb thaum cov khoom siv hlau tsis muaj steel pom kev xeb sai lossis tsis ua haujlwm.
Vs. Hastelloy C-276 (UNS N10276): C-276 yog nickel-chromium-molybdenum "C-}tsev neeg" alloy renowned rau zoo heev nyob ib ncig ntawm tsis kam, tshwj xeeb tshaj yog nyob rau hauv txo thiab chloride-nplua nuj ib puag ncig. Qhov sib txawv tseem ceeb yog nyob rau hauv kev sib xyaw oxidizing acid heev.
Hastelloy G-30, nrog nws cov ntsiab lus chromium ntau dua (29% vs. ~ 16% hauv C-276) thiab ntxiv tooj liab, tshwj xeeb tshaj yog nyob rau hauv kub, concentrated sulfuric acid thiab nyob rau hauv complex sib tov uas muaj nitric acid los yog oxidizing ntsev. Nws qhov kev ua tau zoo hauv cov kab mob phosphoric acid kuj zoo dua.
Hastelloy C-276 feem ntau muaj kev ua haujlwm zoo dua rau kev txo qis qis (piv txwv li, kub hydrochloric acid) thiab kev txhim kho hauv cheeb tsam hauv cheeb tsam hnyav chloride vim nws cov ntsiab lus molybdenum siab heev.
Kev Xaiv Txoj Cai: Rau cov kav dej tuav oxidizing lossis cov kua qaub sib xyaw (tshwj xeeb yog cov tshuaj chlorides tam sim no), phosphoric acid nrog fluorides, lossis sulfuric / nitric sib tov, G-30 feem ntau yog qhov kev xaiv zoo. Rau kev txo qis lossis kev pabcuam dej hiav txwv / dej hiav txwv uas muaj kev pheej hmoo ntawm pitting, C-276 yuav nyiam dua. Daim ntawv seamless yog tus qauv rau ob qho tib si hauv kev pabcuam tseem ceeb.
4. Dab tsi yog qhov tseem ceeb rau kev vuam, kev tsim, thiab kev teeb tsa ntawm Hastelloy G-30 seamless piping systems?
Kev tsim khoom tsim nyog yog qhov tseem ceeb los tiv thaiv kev tiv thaiv corrosion ntawm Hastelloy G-30. Lub hom phiaj yog txhawm rau tswj hwm nws cov theem ib zaug, austenitic microstructure thiab zam kev tsim ntawm cov theem tsis zoo.
Vuam:
Txheej Txheem: Gas Tungsten Arc Vuam (GTAW/TIG) yog txoj kev nyiam vim nws cov kev tswj tau zoo thiab cov txiaj ntsig huv. Shielded Hlau Arc Vuam (SMAW) tuaj yeem siv rau cov ntawv thov tshwj xeeb nrog cov electrodes sib xws.
Filler Hlau: Siv cov khoom sib txuam lossis dhau- alloyed muab tub lim, xws li ERNiCrMo-11 (sib npaug rau G-30 weld hlau) lossis ERNiCrMo-10 (Hastelloy C-276 weld hlau) rau kev txhim kho corrosion hauv cov hlau vuam.
Shielding: Stringent inert gas shielding (argon) yog yuav tsum tau rau ntawm ob lub ntsej muag weld thiab hauv paus (rov qab-purging) los tiv thaiv oxidation thiab "qab zib" nyob rau sab nraub qaum ntawm lub vuam, uas yuav txo qis corrosion kuj.
Thaum tshav kub kub input: Siv cov hluav taws xob qis mus rau nruab nrab thiab tswj qhov kub thiab txias (feem ntau hauv qab 250℃F / 120 degree) kom txo qis kev loj hlob thiab nag lossis daus ntawm carbides los yog lwm yam intermetallic theem nyob rau hauv tshav kub- cuam tshuam cheeb tsam (HAZ).
Fabrication & Thaum tshav kub kub kho:
Kev Ua Haujlwm Txias: G-30 muaj ductility zoo thiab tuaj yeem ua kom txias khoov. Txawm li cas los xij, kev ua haujlwm txias txias yuav xav tau qhov kev daws teeb meem kawg rau kev kho cua sov (feem ntau ntawm 2150-2250℃F / 1175-1230℃ua raws li cov dej nrawm nrawm) kom yaj cov dej nag thiab rov ua kom siab tshaj corrosion.
Kev Tiv Thaiv Kev Tiv Thaiv Kab Mob: Muab cov cuab yeej siv (sib tsoo, txhuam hniav) siv rau ntawm cov nickel alloys kom tsis txhob muaj cov kab mob hlau los ntawm cov pa roj carbon lossis stainless hlau, uas tuaj yeem tsim cov chaw rau galvanic corrosion. Kos cov kav dej kom meej kom tsis txhob muaj kev hloov pauv nrog cov khoom qis dua - qib.
Kev txhim kho: Ua kom muaj kev txhawb nqa kom tsis txhob muaj kev ntxhov siab ntau dhau. Siv cov khoom siv sib xyaw ua ke (piv txwv li, PTFE, graphite) thiab xyuas kom cov qauv tsim tso cai rau kev ua kom tiav cov kua dej kom tsis txhob muaj kev xeb.
5. Dab tsi yog kev lag luam thiab kev ua haujlwm ntev - lub sij hawm ua tau zoo rau kev qhia qhov kim dua Hastelloy G-30 seamless kav hla cov kev xaiv qis dua?
Thaum qhov kev siv nyiaj thawj zaug rau Hastelloy G-30 seamless piping system yog siab dua rau cov hlau tsis muaj steel lossis qib qis nickel alloys, nws cov lus qhia tau tsim nyog los ntawm Tus Nqi Qis Tag Nrho Cov Tswv Cuab (TCO) dhau lub cuab tam lub neej, tsav los ntawm kev ntseeg siab thiab kev ua tau zoo.
Ntxiv Kev Pabcuam Lub Neej & Txo Cov Kev Ua Tsis Zoo: Hauv cov cheeb tsam uas ua phem rau cov hlau tsis muaj steel, G-30 cov kav dej tuaj yeem kav ntau xyoo tsis siv lub hlis lossis xyoo. Qhov no tshem tawm cov nqi rov tshwm sim ntawm kev kaw thaum muaj xwm txheej ceev, hloov cov yeeb nkab, thiab kev tsim khoom ploj. Kev tsim kho seamless txuas ntxiv txhim kho qhov kev ntseeg siab no los ntawm kev tshem tawm cov vuam seam vulnerabilities.
Kev nyab xeeb thiab kev pheej hmoo ntawm ib puag ncig: Cov dej ntws tawm ntawm cov kua qaub kub, ua rau muaj kev nyab xeeb loj heev (hluav taws kub hnyiab, fume tso tawm) thiab muaj kev pheej hmoo ntawm ib puag ncig. Cov pov thawj corrosion kuj ntawm G-30 ua rau txo qis qhov tshwm sim ntawm cov xwm txheej zoo li no, zam kev nplua, lav, thiab kev puas tsuaj rau lub koob npe nrov.
Kev Kho Tus Nqi Txuag: Cov txheej txheem tsim nrog G-30 yuav tsum muaj kev soj ntsuam xyuas, kev saib xyuas, thiab kev tiv thaiv kev tiv thaiv tsawg dua piv rau cov kev ua haujlwm ntawm cov khoom siv tsawg dua.
Tsim Efficiency: Nws lub zog siab thiab kev ua pov thawj muaj peev xwm qee zaum tso cai rau kev tsim qauv yooj yim yam tsis tas yuav tsum muaj cov txheej txheem corrosion nyuaj, cov txheej txheem hauv ob sab phlu, lossis cov cuab yeej siv ntau dhau rau kev kuaj pom.
Xaus: Qhov kev txiav txim siab siv Hastelloy G-30 seamless kav dej yog kev nqis peev rau kev cog qoob loo, kev nyab xeeb, thiab lub sijhawm ua haujlwm. Nws yog kev lag luam rationalized rau cov txheej txheem tseem ceeb uas qhov tshwm sim ntawm qhov tsis ua haujlwm siab, corrosivity ntawm cov kwj deg yog qhov hnyav thiab nyuaj (tshwj xeeb tshaj yog nrog cov oxidizing acids), thiab ntev -lub sij hawm, kev ua haujlwm tsis muaj kev saib xyuas yog qhov tseem ceeb. Daim ntawv seamless yog qhov kev xaiv tsim nyog los xyuas kom meej tias cov khoom zoo tshaj plaws ua rau nws lub peev xwm tag nrho yam tsis muaj kev cuam tshuam.
