Hastelloy C22 kav(Historically categorized nyob rau hauv lub npe universalUNS N06022thiabDIN W.Nr. 2.4602).Qhov no tag nrho austenitic, qib siab nickel-chromium-molybdenum-tungsten superalloy yog tsim tshwj xeeb los tiv thaiv cov cheeb tsam hnyav. HT PIPE is ahastelloy c22 cevtus xa khoom nrog 15+ kev xa tawm.
Tiv tauj pebkom paub ntau ntxiv thiab quotes dawb!
Chemical Composition Framework
| Lub ntsiab | Qhov hnyav (%) | |
| Nickel (Ni) | Qhov nyiaj tshuav (~ 56%) | |
| Chromium (Cr) | 20.0 – 22.5% | |
| Molybdenum (hli) | 12.5 – 14.5% | |
| Tungsten (W) | 2.5 – 3.5% | |
| Hlau (Fe) | 2.0 – 6.0% |
Chromium{0}}Molybdenum Balance
Hastelloy C22 cov ntsiab lus siab chromium muab tshwj xeeb rau oxidizing media, thaum nws cov ntsiab lus molybdenum thiab tungsten tiv thaiv kev txo cov tshuaj lom neeg. Qhov kev muaj peev xwm dual no ua rau C22 qhov kev xaiv zoo tshaj plaws rau ntau- cov khoom siv tshuaj batch reactors, qhov twg cov tshuaj profile hloov ntau zaus.
Seamless vs. Welded Manufacturing Standards
Thaum muab Hastelloy C22 piping rau cov txheej txheem tseem ceeb, kev xaiv ntawm seamless thiab welded configurations nyob ntawm koj lub tsev qhov kev xav tau thiab cov qauv kev cai.
1. Seamless yeeb nkab (ASTM B622 / ASME SB622)
Txoj kev tsim khoom:Extruded los ntawm cov khoom siv pob zeb los ntawm kev tho qhov thiab tom qab txias - kos duab.
Cov txiaj ntsig zoo:Pub dawb los ntawm ib qho kev sib txuas los yog cua sov- thaj chaw cuam tshuam (HAZ). Qhov kev teeb tsa no tshem tawm cov qauv kev hloov pauv thoob plaws hauv cov yeeb nkab phab ntsa, muab cov kev faib siab sib xws.
Kev xa tawm thawj zaug:High -kev ua haujlwm siab, lub tshuab nqus tsev, kev siv roj ua kom tuag, thiab kev siv hluav taws xob tseem ceeb.
2. Welded Pipes (ASTM B619 & B775 / ASME SB619 & SB775)
Txoj kev tsim khoom:Fabricated los ntawm flat-rolled strip los yog phaj Tshuag siv cov txheej txheem vuam zoo li Gas Tungsten Arc Vuam (GTAW / TIG) lossis Plasma Arc Vuam (PAW).
Cov txiaj ntsig zoo:Kev tsim khoom niaj hnub ua tiav qhov kev ntseeg siab ntawm kev siv vuam ntau dhau los ntawm kev siv ntau tshaj -alloyed muab tub lim (xws liFiller Hlau 622 / ERNiCrMo-10). Qhov no tiv thaiv alloy segregation los yog elemental depletion raws seam.
Kev xa tawm thawj zaug:Loj - txoj kab uas hla piping arrays, qis- mus rau - nruab nrab siab hloov kab, thiab qhov cua tshuab scrubbers.
Cov ntawv thov kev lag luam
Lub versatility ntawm UNS N06022 txuas mus thoob plaws ntau qhov kev lag luam xav tau:
Pharmaceutical thiab Biotechnology Processing
Hauv kev tsim tshuaj, kev huv huv nruj thiab kev tiv thaiv corrosion yog qhov tseem ceeb. Cov kab ke tuav cov kev daws teeb meem tsis sib haum xeeb, cov khoom xyaw tshuaj nquag (APIs), thiab huv huv -Hauv - Cov tshuaj (CIP) ua rau muaj kev pheej hmoo ntawm kev qhia cov kab mob hnyav hlau yog tias cov kav dej corrodes.
Hastelloy C22 tiv taus cov organic acids thiab halides, ua rau nws muaj kev xaiv txhim khu kev qha rau kev tswj cov khoom siab purity.
Pollution Control thiab Flue Gas Desulfurization (FGD)
Coal-tua hluav taws xob hluav taws xob thiab pov tseg- rau- cov chaw siv hluav taws xob tsim cov pa hluav taws xob uas muaj cov sulfur dioxide, fluorides, thiab chlorides. Thaum cov roj no txias hauv qab lawv cov dej lwg, lawv tsim cov corrosive condensates. C22 cov kav dej yog siv rau hauv cov twj tso kua mis, cov dampeners, thiab cov tshuab ntxhua khaub ncaws vim tias lawv tuaj yeem tiv taus cov kua qaub sib tov ntawm qhov kub siab yam tsis ua tsis tiav.
Chemical Process Industry (CPI)
Los ntawm kev tsim cov tshuaj agrochemical mus rau petrochemical refining, C22 piping tes hauj lwm tswj kev sib xyaw ntawm hydrochloric, sulfuric, phosphoric, thiab hydrobromic acids. Nws tsis kam mus rau intergranular nag lossis daus thaum lub sij hawm welding kom paub meej tias daim teb -welded pob qij txha nyob twj ywm raws li corrosion-resistant li lub hauv paus yeeb nkab hlau nws tus kheej.
Fabrication, Vuam, thiab Thermal Limits
Thaum Hastelloy C22 yog cov ductile heev thiab tsim nyog rau fabrication, nws cov yam ntxwv txhua yam xav tau kev cob qhia tshwj xeeb:
Ua Haujlwm Hardening:Zoo li feem ntau npib tsib xee-puag superalloys, C22 ua haujlwm- hardens ceev ceev thaum lub sij hawm machining los yog kev ua haujlwm. Heavy- cov khoom siv ua haujlwm, cov cuab yeej txiav ntse, thiab cov khoom noj zoo yog tsim nyog los txiav cov khoom ua ntej nws hardens.
Welding Considerations:C22 qhia tau zoo heev weldability siv cov txheej txheem xws li GTAW, GMAW, thiab SMAW. Txawm li cas los xij, yuav tsum tau saib xyuas kom tsis txhob muaj cua sov, uas tuaj yeem ua rau muaj kev sib cais. Ua ntej- cua sov feem ntau tsis tas yuav tsum tau, thiab qhov ntsuas kub sib txawv yuav tsum tau saib xyuas thiab khaws cia qis.
Thermal Constraints:C22 khaws nws cov qauv kev ncaj ncees ntawm qhov kub thiab txias. Txawm li cas los xij,Nws yuav tsum tsis txhob muab tso rau hauv ib puag ncig tshaj 1250℃F (677 degree)rau ncua sij hawm. Kev raug ncua ntev tshaj li qhov pib no tuaj yeem ua rau nag lossis daus ntawm nkig intermetallic theem (xws li mu lossis sigma theem), uas tuaj yeem txo ob qho tib si cuam tshuam thiab corrosion kuj.
Kev txiav txim siab engineering: C22 vs. C276
Ib lo lus nug ntau rau cov thawj tswj hwm thiab cov kws ua haujlwm corrosion yog seb puas yuav qhia Alloy C22 lossis nws cov thawj, Alloy C276.
ThaumAlloy C276tseem yog qhov kev xaiv txhim khu kev qha rau kev txo qis ib puag ncig,Hastelloy C22 muaj kev ua tau zoo tshaj hauv cov tshuab nrog sib txawv lossis oxidizing chemical profiles.Nws cov ntsiab lus chromium siab dua muab kev tiv thaiv zoo rau pitting, crevice nres, thiab tag nrho cov khaub ncaws nyias nyias nyob rau hauv ib puag ncig uas muaj nitric acid, ntub chlorine gas, los yog ferric ntsev. Kev qhia tshwj xeeb C22 pab rau yav tom ntej -cov ntaub ntawv pov thawj tshuaj ua haujlwm tiv thaiv kev hloov cov txheej txheem chemistry thiab kev mus ncig ua si uas tsis xav txog.
Cov lus nug nquag nug txog Hastelloy C22 Pipes
Q: Dab tsi yog qhov txawv ntawm Hastelloy C22 thiab C276?
Thaum ob leeg yog npib tsib xee -chromium- molybdenum alloys,Hastelloy C22 (UNS N06022)muaj ntau chromium (~ 22% vs. ~ 16% hauv C276). Qhov no muab C22 superior tsis kam rauoxidizingib puag ncig thiab zoo tag nrho kev tiv thaiv tawm tsam hauv zos pitting thiab crevice corrosion, whereas C276 yog feem ntau optimized rau purely txo ib puag ncig.
Q: Hastelloy C22 cov kav dej puas tuaj yeem txuas tau yooj yim?
Yog lawm. Hastelloy C22 qhia zoo heev weldability siv cov txheej txheem xws li Gas Tungsten Arc Vuam (GTAW/TIG) thiab Gas Hlau Arc Vuam (GMAW/MIG). Vim tias nws tiv thaiv kev tsim ntawm cov nplej- ciam teb nag lossis daus hauv cov cua sov- thaj chaw cuam tshuam, feem ntau nws tuaj yeem siv rau hauv qhov ua -welded mob rau feem ntau cov ntaub ntawv siv tshuaj.
Q: Dab tsi yog qhov tseem ceeb ASTM specifications rau C22 piping?
Cov txheej txheem specifications nyob ntawm txoj kev tsim khoom:
ASTM B622 Cov Lus Qhia:Standard specification rauseamlessnpib tsib xee thiab npib tsib xee-cobalt alloy yeeb nkab thiab raj.
ASTM B619 Txuj:Standard specification rauweldednpib tsib xee thiab npib tsib xee-cobalt alloy yeeb nkab.
Q: Dab tsi yog qhov siab tshaj plaws ua haujlwm kub rau Hastelloy C22 kav?
Thaum C22 ua tau zoo heev ntawm qhov kub siab, nws yuav tsumtsis siv ntawm qhov kub siab tshaj 1250℃F (677 degree)rau ncua sij hawm. Saum toj no qhov pib, cov hlau yog nquag tsim nkig intermetallic theem uas cuam tshuam nws cov neeg kho tshuab toughness thiab corrosion kuj.
Q: Vim li cas Hastelloy C22 nyiam tshaj tus qauv 316L stainless hlau?
Standard 316L stainless hlausai succumbs rau hauv zos pitting, crevice corrosion, thiab chloride -induced stress corrosion cracking (SCC) nyob rau hauv hnyav ib puag ncig. Nrog rau Pitting Resistance Equivalent Number (PREN) ntau tshaj 45 (piv rau 316L tus qhab nia ntawm ~ 23-25), Hastelloy C22 tuaj yeem muaj sia nyob hnyav halide thiab acidic ib puag ncig uas yuav ua rau 316L tsis ua haujlwm hauv hnub lossis ntau lub lis piam.
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