Inconel 625 vs 718: Qhov txawv yog dab tsi?

Thaum nws los txog rau siab -kev ua tau zoo nickel{1}}raws li alloys, Inconel 625 thiab Inconel 718 yog cov kev xaiv nrov tshaj plaws hauv kev lag luam xws li aerospace, marine, chemical processing, and power generation. Ob lub alloys paub txog lawv lub zog tshwj xeeb, tiv thaiv corrosion, thiab muaj peev xwm tiv taus qhov chaw huab cua. Txawm li cas los xij, txawm tias lawv zoo sib xws, lawv muaj cov khoom sib txawv uas ua rau txhua qhov zoo dua rau cov ntawv thov tshwj xeeb. Hauv tsab xov xwm no, peb tshawb txog Inconel 625 vs 718: Dab tsi yog qhov txawv? - pab koj txiav txim siab paub thaum xaiv cov ntaub ntawv rau koj qhov project tom ntej.

Inconel yog lub npe lag luam cim npe ntawm nickel-chromium-raws li superalloys tsim los rau siab - zog, siab - kub, thiab corrosive daim ntaub ntawv. Cov alloys no feem ntau siv nyob rau hauv ib puag ncig uas zoo tib yam hlau thiab lwm yam hlau yuav ua tsis tau vim kub kub, oxidation, los yog tshuaj corrosion.

Inconel 625 thiab 718 yog ob qho tib si nag lossis daus -cov alloys hardening, tab sis lawv muaj pes tsawg leeg, txhua yam khoom, thiab kev siv zoo sib txawv. Cov neeg muab khoom zoo li GNEE muab cov alloys no rau cov qauv nruj, ua kom ntseeg tau kev lag luam hauv kev lag luam xav tau tshaj plaws.

Ib 625

Inconel 625 feem ntau yog tsim los ntawm:

Nickel (Ni): ~ 58% yam tsawg kawg nkaus

Chromium (Cr): ~ 20-23%

Molybdenum (Mo): ~ 8-10%

Niobium (Nb): 3-4%

Me me ntawm hlau, manganese, silicon, aluminium, thiab titanium

Lub siab molybdenum thiab niobium cov ntsiab lus txhim kho Inconel 625 qhov kev tiv thaiv corrosion thiab lub zog tsis tas yuav muaj nag lossis daus hardening.

ib 718

Inconel 718 muaj:

Nickel (Ni): 50-55%

Chromium (Cr): ~ 17-21%

Hlau (Fe): ~ 17%

Niobium (Nb): 4.75-5.5%

Molybdenum (Mo): ~ 2.8-3.3%

Titanium thiab txhuas: ~ 0.7-1.15% ua ke

Dab tsi ua rau Inconel 718 sib nrug yog nws lub peev xwm los nag lossis daus los ntawm kev tsim ntawm gamma prime (') thiab gamma double prime (") theem, nce nws lub zog.

Tensile thiab Yield Strength

Ib 625Lub zog tensile ~ 827 MPa (120 ksi), yield zog ~ 414 MPa (60 ksi)

ib 718Lub zog tensile ~ 1379 MPa (200 ksi), yield zog ~ 1034 MPa (150 ksi)

Inconel 718 muaj qhov tensile ntau dua thiab tawm los lub zog vim nws nag lossis daus -txheej microstructure.

Qhov kub thiab txias

Ib 625ua tau zoo txog li 982℃(1800℃F) thaum khaws cov corrosion zoo heev.

ib 718tuav lub zog siab txog li 704℃(1300℃F). Saum toj no, nws lub zog kom zoo dua zuj zus raws li cov precipitates poob hauj lwm zoo.

Rau siab -cov ntawv siv zog hauv qab 704 degree, Inconel 718 zoo dua; Inconel 625 muaj qhov kub thiab txias corrosion kuj.

Fatigue thiab Creep Resistance

ib 718yog renowned rau nws zoo heev qaug zog zog thiab creep kuj ntawm nruab nrab kub.

Ib 625muab kev qaug zog zoo tab sis zoo dua muaj nuj nqis rau nws cov kev tiv thaiv corrosion thiab weldability.

Ib qho ntawm Inconel 625 lub zog loj tshaj plaws yog nws cov kev tiv thaiv corrosion zoo tshaj:

Kev tiv thaiv zoo heev rau pitting, crevice corrosion, thiab kev ntxhov siab -corrosion cracking nyob rau hauv ib puag ncig chloride.

Exceptional tsis kam rau dej hiav txwv thiab tshuaj lom neeg xws li acids.

Inconel 718 kuj muaj kev tiv thaiv corrosion zoo tab sis tsis yog resistant li 625 nyob rau hauv corrosive heev los yog marine ib puag ncig.

Cov ntsiab lus:Thaum corrosion tsis kam yog qhov tseem ceeb tshaj plaws, Inconel 625 yog cov nyiam alloy.

Ib 625yog paub txog nws zoo heev weldability. Nws tuaj yeem welded yam tsis muaj kev txhawj xeeb rau kev tshaj tawm -vuam tawg, ua rau nws zoo tagnrho rau kev tsim thiab kho dua tshiab.

ib 718yuav tsum tau kev kho cua sov kom zoo thiab ceev faj thaum lub sij hawm vuam kom tsis txhob tawg lossis degradation ntawm cov khoom. Tom qab-weld kev kho cua sov feem ntau yuav tsum tau los kho cov khoom.

Cov ntsiab lus:Inconel 625 feem ntau yog yooj yim dua rau vuam thiab fabricate, muab kev yooj yim dua hauv kev tsim thiab kho.

Inconel 625 Daim ntawv thov

Marine hardware thiab seawater Cheebtsam

Cov khoom siv tshuaj ua haujlwm tuav cov xov xwm txhoj puab heev

Thaum tshav kub kub exchangers thiab condenser tubing

Flue gas scrubbers

Aerospace ducting systems

Flexible hlau hose thiab hauv qab

Inconel 718 Daim ntawv thov

Aircraft engine Cheebtsam (diss, fasteners, casings)

Roj turbines

Rocket motors thiab nuclear fuel element spacers

Siab - lub zog fasteners thiab bolts

Downhole cov cuab yeej hauv kev lag luam roj thiab roj

Cov ntsiab lus:Inconel 718 yog xaiv rau siab - lub zog, siab - kev siv qaug zog ntawm qhov kub nruab nrab, thaum Inconel 625 yog qhov zoo tshaj plaws qhov kev tiv thaiv corrosion thiab yooj yim ntawm fabrication yog qhov tseem ceeb.

Inconel 718 feem ntau raug nqi ntau dua los tsim vim yog:

Ntxiv alloying ntsiab

Cov txheej txheem kev kho cua sov nyuaj

Ntau nyuaj fabrication xav tau

Hauv qhov sib piv, Inconel 625 qhov kev ua haujlwm yooj yim dua feem ntau ua rau nws tus nqi ntau dua -kev xaiv zoo qhov twg ultra- tsis tas yuav muaj lub zog siab.

Cov ntsiab lus:Yog tias lub zog yog qhov tseem ceeb, Inconel 718 pom zoo nws cov nqi siab dua. Rau kev tiv thaiv corrosion thiab tus nqi ua haujlwm, Inconel 625 muab tus nqi zoo dua.

Thaum txiav txim siab ntawm ob lub alloys, xav txog:

Cov xwm txheej ua haujlwm:Dab tsi kub, kev ntxhov siab, thiab corrosive cov khoom yuav ntsib?

Mechanical xav tau:Puas muaj zog lossis qaug zog ua haujlwm tseem ceeb?

Fabrication Requirements:Puas yuav xav tau txoj kev sib sau los yog vuam?

Kev pabcuam ib puag ncig:Cov khoom puas yuav raug rau cov tshuaj lom neeg lossis dej hiav txwv?

Kev txwv nyiaj txiag:Tus nqi siab dua ntawm Inconel 718 puas tuaj yeem tsim nyog los ntawm cov txiaj ntsig kev ua haujlwm?

Inconel 625 vs 718: Dab tsi yog qhov txawv?Cov lus teb yog nyob rau hauv lawv cov khoom siv tseem ceeb thiab cov ntawv thov:

ib 718: Superior zog, qaug zog tsis kam, thiab creep kuj ntawm nruab nrab kub. Zoo tagnrho rau siab -stress aerospace, turbine, thiab cov khoom tsim hluav taws xob.

Ib 625: Zoo corrosion kuj, yooj yim ntawm vuam, thiab kev ua tau zoo heev ntawm qhov kub thiab txias. Zoo meej rau marine, tshuaj, thiab siab -corrosion ib puag ncig.

Ob lub alloys sawv cev rau qhov kawg ntawm npib tsib xee-raws li superalloy thev naus laus zis, tab sis qhov kev xaiv yog nyob ntawm koj qhov kev xav tau tshwj xeeb. Rau cov kws tshaj lij kev taw qhia thiab cov kev daws teeb meem zoo tshaj plaws, cia siab rau GNEE los pab txhawb koj txoj kev vam meej.

Tau txais cov khoom catalog tiav