1. Cov txheej txheem thoob ntiaj teb siv li cas rau Monel Alloys?
ASTM International Standards (American Society for Testing and Materials)
ASTM B127
Specification raunpib tsib xee- tooj liab alloy (Monel) phaj, ntawv, thiab sawb. Nws txhais cov tshuaj muaj pes tsawg leeg txwv, tensile zog, hardness yuav tsum, thiab qhov ntev kam rau ua rau cov khoom tiaj tus ntawm Monel 400, qib feem ntau.
ASTM B 164 Cov khoom siv
Specification raunpib tsib xee- tooj liab alloy (Monel) seamless yeeb nkab thiab raj. Cov qauv no siv rau seamless Monel 400 cov kav dej thiab cov raj siv hauv kev ua tshuaj lom neeg, marine engineering, thiab roj thiab roj kev lag luam, qhia txog kev kuaj hydrostatic, kuaj corrosion, thiab qhov yuav tsum tau ua kom zoo.
ASTM B165
Specification raunpib tsib xee- tooj liab alloy (Monel) seamless tubing rau condenser thiab kub exchanger daim ntaub ntawv. Ua kom haum rau cov khoom siv hluav taws xob hloov hluav taws xob, nws hais txog qhov siab - qhov kub thiab txias thiab corrosion kuj nyob rau hauv cov dej txias los yog qhov chaw ib puag ncig.
ASTM B564
Specification raunpib tsib xee thiab npib tsib xee alloy forgings. Npog forged Monel alloys (piv txwv li, Monel 400, Monel K500), txhais cov txheej txheem forging, txheej txheem kev kho cua sov, thiab kev txheeb xyuas cov cuab yeej cuab tam rau cov khoom tseem ceeb xws li li qub, flanges, thiab cov twj tso kua mis.
ISO Standards (International Organization for Standardization)
TS EN ISO 6208
Specification raunpib tsib xee- tooj liab alloy (Ni-Cu) seamless raj rau lub hom phiaj dav. Nws ua raws li ASTM B164 hauv kev xav tau thiab tau txais kev pom zoo hauv European thiab Esxias kev lag luam, suav nrog cov tshuaj muaj pes tsawg leeg, lub zog tensile, thiab tsis yog -kev kuaj kev puas tsuaj (NDT) cov cai.
TS EN ISO 9723
Specification raunickel alloys - phaj, ntawv, thiab sawb - cov txheej txheem xa khoom. Xws li Monel alloy qib thiab qhia txog cov kev tshuaj xyuas rau qhov chaw tsis xws luag, thickness uniformity, thiab corrosion resistance testing.
Lwm Lub Tebchaws & Kev Lag Luam - Cov Qauv Tshwj Xeeb
EN Standards (European Norms)
Xws liTS EN 10204(rau cov ntaub ntawv pov thawj) thiabTS EN 10088-3(rau cov hlau nplaum npib tsib xee), uas siv Monel alloy qib thiab ua raws li ISO cov cai rau European kev lag luam.
ASME Boiler thiab Pressure Vessel Code (Tshooj II, Ntu D)
Txais ASTM cov qauv rau Monel alloys siv nyob rau hauv cov hlab ntsha siab, boilers, thiab kub exchangers, kom ntseeg tau raws li kev nyab xeeb thiab kev ua tau zoo yuav tsum tau nyob rau hauv siab -pressure ib puag ncig.
2. Lub neej kev pab cuam ntawm Monel Alloy Cheebtsam yog dab tsi nyob rau hauv ib txwm ua hauj lwm tej yam kev mob?
Cov Ntsiab Tseem Ceeb Txiav Txim Kev Pabcuam Lub Neej
Alloy Qib
Monel 400: Cov qib siv dav tshaj plaws nrog zoo heev dav dav corrosion kuj. Nyob rau hauv me me mus rau nruab nrab corrosive ib puag ncig (xws li, seawater pipelines, tshuaj cia tank), nws cov kev pab cuam lub neej feem ntau ncav cuag20-35 xyoo. Nyob rau hauv ib puag ncig ruaj khov (xws li, nruab nrab dej kho tshuab), nws tuaj yeem tshaj40 xyoo.
Monel K500: Cov nag lossis daus- qib hardened nrog lub zog siab dua thiab hnav tsis kam tshaj Monel 400. Siv nyob rau hauv siab - kev ntxhov siab, corrosion- cov ntawv siv yooj yim (xws li, marine propeller shafts, oilfield downhole cov cuab yeej), nws lub neej kev pab feem ntau yog15-30 xyoo, txwv tsuas yog los ntawm qaug zog tsis kam es tsis yog corrosion.
Kev ua haujlwm ib puag ncig
Ib puag ncig Corrosive me me(piv txwv li, dej qab zib, atmospheric exposure, dilute alkaline daws): Kev pab lub neej muaj peev xwm tshaj35 xyoovim qhov tsawg tshaj plaws corrosion (feem ntau tsawg dua 0.01 mm / xyoo).
Nruab nrab Corrosive Ib puag ncig(piv txwv li, dej hiav txwv immersion, dilute non{2}}oxidizing acids, ntsev tsuag): Corrosion npaum li cas ntawm 0.01–0.1 mm / xyoo, ua rau lub neej kev pab cuam ntawm20-30 xyoo.
Qhov hnyav tab sis haum ib puag ncig(piv txwv li, hydrofluoric acid tuav, chloride- muaj cov xov xwm): Monel alloys pom lawv qhov zoo tshaj plaws corrosion kuj ntawm no, nrog rau kev pab cuam lub neej.25-40 xyoo(ntev ntev tshaj li carbon steel lossis stainless hlau).
Kev tu thiab kev ua haujlwm
Kev saib xyuas tsis tu ncua (piv txwv li, kev tu saum npoo, tshem tawm cov deposits, tiv thaiv - fouling kev kho mob rau marine Cheebtsam) tuaj yeem txuas lub neej kev pab cuam los ntawm5-10 xyoo. Hloov pauv, tsis saib xyuas kev saib xyuas (xws li, tso cai rau cov pob txha pob txha) tuaj yeem ua rau muaj kev cuam tshuam hauv zos (pitting, crevice corrosion) thiab ua rau lub neej ua haujlwm ntev li 30-50%.
Cov ntawv thov raug
Marine Nkoj Hulls & Pipelines: Monel 400 Cheebtsam hauv seawater ib puag ncig feem ntau kawg25-35 xyoonrog niaj hnub tiv thaiv -corrosion txij nkawm.
Chemical Plant Reactors (HF tuav): Monel alloy liners tuaj yeem ua haujlwm ruaj khov rau30-45 xyoonyob rau hauv ib txwm kub thiab siab tej yam kev mob.
Roj & Gas Downhole cuab yeej (Monel K500): Kev pab lub neej nyob ntawm15-25 xyoovim muaj kev sib xyaw ua ke siab thiab corrosive wellbore kua.
