Jul 23, 2025 Tso lus

Qhov sib txawv ntawm Inconel 718 thiab 925 alloy

1. Tshuaj lom neeg sib xyaw

Thawj qhov sib txawv ntawm lawv cov pleev pleev, uas ncaj ncaj rau lawv cov khoom:
Lub ntsiab Inconel 718 (ib txwm muaj) Inconel 925 (feem ntau) Qhov tseem ceeb sib txawv
Npib tsib caug (ni) 50–55% 38–46% 718 Muaj cov ntsiab lus NI siab dua, txhim kho nws lub hauv paus corrosion tsis kam thiab ruaj khov.
Chromium (cr) 17–21% 19–21% CR theem siab li, muab oxidation tsis kam.
Hlau (FE) Ntsig (≈18-25%) Ntsig (≈28-34%) 925 muaj ntau dua FE, txo nqi tab sis me ntsis cuam tshuam rau kev ua tau kub siab.
Molybdenum (mo) 2.8–3.3% 2.5–3.5% 925 muaj me ntsis siab dua mo ntau, boosting tsis kam rau chloride-induced corrosion.
Niobium (nb) 4.75-5.5% (nrog TA: Tsawg dua lossis sib npaug nrog 1.0%) 0% Qhov tseem ceeb tshaj plaws: 718 suav nrog NB (lub caij nyoog kim) rau ntxiv dag zog ntawm "Theem Tsim; 925 tsis muaj nb.
Titanium (ti) 0.65–1.15% 2.3–2.9% 925 Tau ntau dua ti, pab rau cov kev ua kom hnyav los ntawm 'theem tsim.
Aluminium (AL) 0.2–0.8% 0.1–0.5% 718 tau muaj me ntsis ntxiv al, pab txhawb kom muaj kev kub ntxhov.
Cobalt (CO) Tsawg dua los yog sib npaug rau 1.0% Tsawg dua los yog sib npaug rau 1.0% Tsawg heev thiab zoo sib xws hauv ob qho tib si.

2. Cov Khoom Siv Neeg Kho Tshuab

Lawv cov cwj pwm kev coj txawv txawv ntawm kev sib txawv ntawm cov ntsiab lus sib txawv, tshwj xeeb tshaj plaws hauv lub zog, qhov kub tsis kam, thiab tawv:
Lub zog tensile:

Inconel 718: Cov khoom pov thawj siab tensile lub zog (≈1,300-1,600 mpa kom muaj hnub nyoog) vim NB-trours "theem ntxiv dag zog. Nws khaws lub zog kom zoo txog ~ 650℃(1,200℃f).

Inconel 925: Muaj lub zog xob rau hauv lub zog (≈1,100-1,300 MPa hauv cov mob uas Ti / Al-Induced '. Nws ua txoj kev ntseeg siab mus txog ~ 550℃(1,020℃f).

Creep Kuj:

Inconel 718: Cov ntsiab lus zoo dua ntawm cov chaw kub (nce mus txog 650 degree) vim yog qhov ruaj khov ", ua rau kev siv rau lub sijhawm ntev-ntxhov siab zoo li cov khoom siv tshuab Turbine.

Inconel 925: qis dua cov txheej txheem qis dua piv rau 718, txwv nws siv hauv qhov chaw kub siab heev, kev ntxhov siab ib puag ncig.

Tougness thiab ductility:

Inconel 718: Kev ntsuas kub zoo heev, tswj hwm duction txawm tias ntawm cryogenic kub (uas yog qhov tseem ceeb rau cov ntawv thov zoo li cryogenic cia.

Inconel 925: Chav nyob zoo-kub tod tab sis tsis tshua muaj txiaj ntsig ntawm huab kub tsawg dua piv rau 718.

Weldability:

Inconel 718: Weldable weldable siv cov qauv txheej txheem (piv txwv li tus qauv, mig) tsis muaj teeb meem nb uas suppresses kub tawg.

Inconel 925: weldable tab sis yuav tsum tau ceev faj ntau dua kev kho mob tom qab vuam kom tsis txhob muaj kev tawm tsam, raws li nws muaj zog rau cov cua sov.

3. Corrosion Kuj

Ob qho alloys muaj muaj zog corrosion tsis kam, tab sis lawv cov zog sib txawv los ntawm ib puag ncig:
Inconel 718:

Resistant rau dav dav corrosion, oxidation, thiab pitting nyob rau hauv me me mus rau ib puag ncig me me (xws li huab cua, dej, thiab qee cov kua qaub).

Tsis tshua muaj txiaj ntsig zoo hauv cov tshuaj txhoj puab heev lossis ib puag ncig, raws li nws yog qhov kev ntxhov siab rau chloride kev ntxhov siab corrosion (SCC) piv rau 925.

Inconel 925:

Zoo dua kev tawm tsam rau chloride-inducles SCC, thiab cov acids (piv txwv li cov ntsiab lus muaj zog acid) vim cov ntsiab lus ntau dua thiab ua kom zoo dua cr / mo tshuav.

Kev txawj rau tub rog, oilfield, thiab kev ua yeeb yam ib puag ncig uas raug rau cov electrolytes muaj ntau.

4. Kev thov

Lawv cov khoom tshwj xeeb sau cov xwm txheej sib txawv:
Inconel 718:

Aerospace thiab aviation discs, hniav, shaft, thiab cov teeb meem hauv lub zog ntawm lub zog (vim qhov siab-qhov kub ntawm lub zog).

Cryogenics: tso tsheb hlau luam me me, foob pob hluav taws tshuab, thiab LNG cov khoom siv (ua tsaug rau qis qis-kub nyuaj).

Nuclear Engineering: Cheebtsam hauv cov tshuaj reactors nuclear, uas hluav taws xob tiv thaiv thiab muaj zog ntau dua.

Inconel 925:

Roj thiab roj kev lag luam: cov cuab yeej siv nyiaj, cov khoom siv WELHEAD, thiab Pipelines (tiv taus sulfide kev ntxhov siab tawg thiab brine corrosion).

Marine Engineering: Dej hiav txwv tuav cov tshuab, kiv cua kiv cua, thiab ntug dej hiav txwv (tiv taus dej hiav txwv corrosion thiab biofatering).

Tshuaj lom neeg: reactors, twj, thiab cov li qub cov acids, chlorides, thiab lwm yam tshuaj corrosive.

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5. Nqi

Inconel 718 feem ntau kim dua li inconel 925. Qhov no yog vim nws cov ntsiab lus Nickel ntau dua thiab suav nrog kev sib cais.

Inconel 925 qhov qis dua cov ntsiab lus ntawm Niobium ua nws cov kev xaiv zoo dua rau cov kev siv uas huab cua sov ntau dua tsis yog qhov tseem ceeb.

Inconel 718 tau nyiam rau qhov siab kub, muaj kev nyuaj siab, thiab cryogenic daim ntawv thov, muaj kev dag ntxias thiab tawv. Inconel 925, nrog cov corrosion zoo tshaj hauv kev ua phem (piv txwv li, sulfide, sulfide, thiab roj, thiab kev ua yeeb yam ntawm kev ua tau zoo thiab raug nqi.
 
 
 

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