Hastelloy G30 (UNS N06030)yog nickel -chromium- hlau alloy. Tsim los ntawm Haynes International, cov hlau no muaj kev sib xyaw ua ke ntawm kev ua haujlwm rau ob qho tib si oxidizing thiab txo cov kua qaub.
Kab lus no muab cov ntsiab lus dav dav ntawm Hastelloy G30 phaj cov khoom thiab lawv siv.
Hastelloy G30 PhajCov khoom tseem ceeb
1. Exceptional Resistance rau ntub dej -Process Phosphoric Acid
Hastelloy G30 ua pov thawj muaj pov thawj tiv thaiv rau ntub - txheej txheem phosphoric acid, tau siv ua tiav hauv cov raj evaporator rau ntau tshaj 30 xyoo.
ntub- txheej txheem phosphoric acid (P₂O₅) yog tsim los ntawm reacting phosphate pob zeb nrog sulfuric acid. Cov txheej txheem kev lag luam no tsim ib qho chaw corrosive heev uas muaj impurities xws li unreacted sulfuric acid, metallic ions, fluoride ions, thiab chloride ions. Cov kua qaub yuav tsum tau concentrated los ntawm evaporation, feem ntau ntawm li 30% mus rau 54% P₂O₅ concentration, siv hlau tubing uas yuav tsum tau tiv thaiv corrosion tsis tu ncua.
G30 alloy excels nyob rau hauv qhov chaw no vim nws cov ntsiab lus chromium siab ua ke nrog molybdenum thiab tooj liab ntxiv. Cov kev kuaj sim ua tiav ntawm 121℃hauv qhov ntub dej tiag tiag - txheej txheem phosphoric acid los ntawm Florida cov neeg tsim khoom tau lees paub tias cov hlau ua tau zoo tshaj plaws. Daim duab iso-corrosion diagrams tsim los ntawm Haynes International qhia tias G30 tuav cov nqi corrosion qis dua 0.1 mm / xyoo nyob rau ntau qhov ntau ntawm cov kua qaub thiab qhov kub thiab txias, ua tau zoo tshaj cov qauv stainless hlau zoo li 316L thiab txawm tias muaj ntau cov nickel alloys sib tw.
2. Kev ua haujlwm zoo tshaj rau Oxidizing Acids
Cov ntsiab lus chromium siab ntawm G30 muab kev ua haujlwm zoo rau oxidizing acids xws li nitric acid thiab cov khoom sib xyaw uas muaj nitric acid.
Nrog kwv yees li 30% chromium-ib qib siab tshaj ntawm cov npib tsib xee-raws li alloys-G30 tsim ib txheej ruaj khov, tiv thaiv oxide txheej ntawm nws qhov chaw thaum raug oxidizing ib puag ncig. Cov zaj duab xis passive no zoo tiv thaiv cov hlau hauv qab los ntawm kev tawm tsam los ntawm nitric acid, sulfuric acid, thiab complex mixs xws li nitric-hydrochloric thiab nitric-hydrofluoric acid ua ke.
Cov ntaub ntawv ntsuam xyuas qhia tau hais tias G30 tswj cov nqi corrosion qis dua 0.1 hli / xyoo hauv sulfuric acid concentrations txog 50% ntawm qhov kub txog li 80 degree. Nyob rau hauv ib puag ncig nitric acid, cov hlau ua kom pom kev tiv thaiv ntau dua, ua rau nws tsim nyog rau kev ua haujlwm ntawm cov hlau pickling thiab cov cuab yeej ua tshuaj uas muaj oxidizing tej yam kev mob.
3. Kev tiv thaiv qis kom txo cov kua qaub
Los ntawm nws cov ntsiab lus molybdenum thiab tooj liab, G30 muaj cov ntsiab lus tseem ceeb los txo cov acids xws li hydrochloric thiab sulfuric acids.
Txawm hais tias G30 tsis yog tsim los rau kev txo qis hauv ib puag ncig dawb huv- qhov twg cov alloys zoo li Hastelloy B-series excel- nws muaj kev sib luag uas ua pov thawj muaj txiaj ntsig hauv cov txheej txheem kev lag luam uas cov kua qaub hloov pauv ntawm oxidizing thiab txo cov xeev. Cov hlau muaj kwv yees li 5.5% molybdenum thiab 2% tooj liab, ob qho tib si uas txhim khu kev tiv thaiv rau hydrochloric acid thiab sulfuric acid hauv kev txo qis.
Kev kuaj corrosion qhia tau tias G30 tswj cov nqi corrosion qis dua 0.1 hli / xyoo hauv hydrochloric acid concentrations txog 2.5% ntawm 150℃F thiab mus txog 1% ntawm kub kub. Nyob rau hauv sulfuric acid, cov alloy ua tau zoo ntawm ntau txog 30% ntawm nruab nrab kub, nrog corrosion nqi qis dua 0.1 hli / xyoo hauv 40% sulfuric acid ntawm 125℃F (52 degree).
4. Kev tiv thaiv rau chloride-Induced Stress Corrosion Cracking
Tsis zoo li cov qauv austenitic stainless hlau, Hastelloy G30 muaj kev tiv thaiv tseem ceeb rau chloride-induced stress corrosion cracking.
Chloride stress corrosion cracking (Cl-SCC) yog ib qho kev ua haujlwm tsis zoo nyob rau hauv 304 thiab 316 stainless hlau thaum raug chloride-muaj ib puag ncig nyob rau hauv tensile stress. Qhov tshwm sim no tuaj yeem ua rau tam sim ntawd, kev puas tsuaj loj yam tsis muaj qhov tseem ceeb ua ntej corrosion.
G30's npib tsib xee- nplua nuj matrix (kwv yees li 43% npib tsib xee) muab kev tiv thaiv tsis zoo rau hom kev ua tsis tiav no. Ua ke nrog nws cov ntsiab lus chromium siab thiab molybdenum ntxiv, cov hlau tseem muaj kev ntseeg ruaj khov txawm tias nyob hauv ib puag ncig uas muaj cov tshuaj chlorides-ib qho txiaj ntsig tseem ceeb hauv evaporators, heat exchangers, thiab piping systems where chloride concentration tuaj yeem tshwm sim hauv qab deposits lossis thaum lub sij hawm concentration.
5. Resistance to grain ciam teb nag los nag
G30 ua pov thawj zoo heev rau kev tsim cov qoob loo ciam teb precipitates nyob rau hauv tshav kub- cuam tshuam cheeb tsam, tso cai siv nyob rau hauv raws li -welded mob yam tsis muaj post-weld tshav kub kho.
Ntau cov corrosion-cov alloys tiv taus raug kev txom nyem los ntawm rhiab heev thaum vuam- nag lossis daus ntawm chromium carbides ntawm cov ciam teb uas depletes chromium thiab tsim txoj hauv kev rau intergranular corrosion. G30 kov yeej qhov kev txwv no los ntawm kev tswj xyuas cov ntsiab lus ntawm cov pa roj carbon monoxide thiab ntxiv cov niobium, uas nyiam ua cov carbides ruaj khov.
Cov yam ntxwv no ua rau G30 tshwj xeeb tshaj yog muaj txiaj ntsig rau cov khoom loj loj uas tom qab-weld kev kho cua sov yuav ua tsis tau lossis raug nqi- txwv tsis pub. Welded Cheebtsam tuaj yeem muab tso ncaj qha rau hauv kev pabcuam yam tsis muaj kev pheej hmoo ntawm intergranular nres, txo cov sijhawm tsim khoom thiab cov nqi rau cov khoom siv tshuaj.
6. Zoo heev Fabricability thiab Weldability
Hastelloy G30 tuaj yeem ua tau yooj yim tsim los ntawm cov txheej txheem ib txwm siv thiab welded siv cov txheej txheem txheej txheem nrog cov khoom siv hlau sib txuam.
Cov alloy nthuav tawm cov yam ntxwv txias txias zoo vim nws cov ductility siab. Txawm li cas los xij, nws yog qhov tawv dua li austenitic stainless hlau, xav tau ntau lub zog thaum lub sijhawm ua haujlwm. Kev sib sau kub yog feem ntau ua nyob rau ntawm qhov kub ntawm 950℃thiab 1150 degree, ua raws li cov cua txias kom ceev kom muaj kev tiv thaiv corrosion.
Rau vuam, ERNiCrMo-11 muab tub lim hlau yog pom zoo, thiab cov txheej txheem xws li TIG, MIG, thiab shielded hlau arc vuam yog haum. Lub vuam cheeb tsam yuav tsum tau ceev kom huv si kom tsis txhob muaj kab mob los ntawm leej faj, txhuas, los yog lwm yam impurities uas yuav cuam tshuam corrosion kuj. Cov txheej txheem kev kho cua sov yog cua sov mus rau 1177℃(2150℃F) tom qab cua txias los yog dej quenching.
Hastelloy G30 Plate Cov ntawv thov tseem ceeb
1. Phosphoric Acid Cov Khoom Siv Tsim Khoom
G30 daim hlau yog dav siv nyob rau hauv evaporator raj, piping, thiab cov hlab ntsha rau ntub - txheej txheem phosphoric acid concentration, qhov twg cov alloy qhov corrosion kuj tau teb - pov thawj rau ntau xyoo.
Qhov concentration ntawm ntub - txheej txheem phosphoric acid yog ib qho ntawm cov kev thov tshaj plaws hauv kev lag luam tshuaj. Cov evaporators ua haujlwm ntawm qhov kub siab thiab tswj cov kua qaub uas muaj chlorides, fluorides, thiab cov khoom siv. G30 kev sib xyaw ua ke ntawm kev tiv thaiv corrosion dav dav, kev tawm tsam hauv zos, thiab kev ntxhov siab corrosion ua rau nws nyiam cov khoom siv rau cov kev pabcuam no.
2. Nuclear Fuel Reprocessing thiab Kev Tswj Pov Hwm
Cov hlau tsis kam tiv thaiv nitric acid-raws li cov kev daws teeb meem ua rau nws tsim nyog rau cov chaw tsim hluav taws xob nuclear thiab cov khoom siv hluav taws xob pov tseg.
Hauv kev lag luam nuclear, G30 Cheebtsam yog siv qhov twg cov ntaub ntawv yuav tsum tiv taus oxidizing heev ua ke nrog hluav taws xob raug. Lub alloy qhov ruaj khov nyob rau hauv nitric -hydrofluoric acid sib tov- feem ntau nyob rau hauv cov txheej txheem roj dissolution - ua rau nws yog ib qho kev xaiv txhim khu kev qha rau cov khoom siv tseem ceeb.
3. Cov Khoom Siv Hlau Pickling
G30 daim hlau yog ua hauj lwm hauv nitric acid-raws li kev ua haujlwm pickling rau stainless hlau thiab lwm yam hlau.
Pickling tso tsheb hlau luam thiab cov cuab yeej cuam tshuam yuav tsum tiv thaiv kev sib xyaw ntawm nitric thiab hydrofluoric acids ntawm qhov kub siab. G30 qhov kev tiv thaiv zoo heev rau cov oxidizing acid sib tov ua kom lub neej ua haujlwm ntev hauv cov ntawv thov no.
4. Petrochemical Processing thiab Fertilizer Manufacturing
Cov alloy ua haujlwm hauv cov khoom siv rau kev tsim tshuaj tua kab, chiv, thiab petrochemicals uas sib xyaw ua ke -acid ib puag ncig.
G30's balanced corrosion kuj ua rau nws haum rau tuav sulfuric acid, nitric acid, thiab complex mixs nyob rau hauv tshuaj ua cov nroj tsuag. Daim ntawv thov muaj xws li reactors, kub exchangers, piping, thiab agitation khoom.
5. Kub Ore Extraction
G30 yog siv rau hauv cov chaw ua haujlwm kub uas siv nitric thiab sulfuric acids rau kev kho ore.
Kev lag luam kub mining siv G30 hauv cov khoom siv uas tswj cov kua qaub rau cov txheej txheem rho tawm kub, tau txais txiaj ntsig los ntawm cov hlau sib xyaw ua ke ntawm corrosion kuj thiab cov khoom siv zoo.
6. Flue Gas Desulfurization Systems
Rau cov cuab yeej tswj ib puag ncig, G30 daim hlau muab kev tiv thaiv rau cov kua qaub condensates thiab chloride- muaj ib puag ncig hauv flue gas desulfurization systems.
Hauv cov thee- hluav taws xob hluav taws xob hluav taws xob thiab cov chaw tsim khoom lag luam nrog cov pa roj carbon monoxide scrubbing systems, G30 muaj kev txhim khu kev qha tiv thaiv sulfuric acid condensates thiab chloride-induced corrosion, feem ntau outperforming stainless hlau lwm txoj.
Tiv tauj peb pab neeg muag khoomrau cov ncauj lus kom ntxaws specifications, tus nqi sib tw, lossis cov lus qhia kws tshaj lij rau koj daim ntawv thov.
