Nrhiav rau siab - tus muab khoom zoo ntawmInconel 718 thiab Nickel 725 alloysnrog kev txawj ntse hauv kev ua haujlwm siab? Koj twb tuaj rau qhov zoo lawm. Raws li tus thawj coj ISO, API, thiab NORSOK certified chaw tsim tshuaj paus ntawm nickel{1}}raws li superalloys,GNEEmuab cov khoom siv siab tshaj plaws rau kev xav tau tshaj plaws roj thiab roj, aerospace, thiab tshuaj lom neeg kev lag luam. Cov lus qhia dav dav no yuav muab ib qho hauv - sib piv qhov tob ntawmInconel 718 thiab Nickel 725 alloys, qhia txog lawv cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, kev tiv thaiv corrosion nyob rau hauv ib puag ncig hnyav, thiab cov txheej txheem xaiv rau kev siv tshwj xeeb.
Tom ntej: Inconel 718 Alloy VS Nickel 725 Alloy
Inconel 718 tawm tsam qhov sib npaug zoo ntawm lub zog thiab kev tiv thaiv corrosion, ua rau nws tsim nyog rau kev siv siab dav dav - kub, thaum Inconel 725 tshwj xeeb yog tsim los rau qhov hnyav dua, ntau dua corrosive ib puag ncig. Vim nws cov ntsiab lus molybdenum thiab chromium ntau dua, nws pom zoo ua haujlwm zoo rau pitting thiab kev ntxhov siab corrosion tawg. Nws lub zog zoo ib yam li Inconel 625, tab sis nws muaj qhov zoo dua ductility thiab toughness tom qab kev laus kho. Yog li ntawd, Inconel 725 yog qhov zoo tagnrho rau qhov xav tau acidic ib puag ncig ntawm kev lag luam roj thiab roj, thaum Inconel 718 yog qhov tsim nyog rau kev siv dav hlau thiab hluav taws xob.
Puas yog Inconel 718 tau ua haujlwm hnyav?
Inconel 718 yog ib qho khoom siv nyuaj heev rau lub tshuab, vim nws qhov siab tawv, tsis tshua muaj thermal conductivity, thiab susceptibility ua hauj lwm hardening. Tsis tas li ntawd, raws li cov khoom siv ua haujlwm nyuaj, Inconel 718 tau dhau los ua ntau yam yas deformations thaum lub sijhawm ua haujlwm.
Txheej txheem cej luam ntawm Inconel 718 Alloy
Inconel 718 yog lwm cov npib tsib xee -chromium- raws siab - kub alloy paub txog nws lub zog siab thiab zoo weldability. Nws muaj pes tsawg leeg yog raws li nram no:
Nickel (Ni): 50-55%
Chromium (Cr): 17-21%
Molybdenum (Mo): 2.8-3.3%
Niobium (Nb): 4.75-5.50%
Titanium (Ti): 0.65-1.15%
Aluminium (Al): 0.20-0.80%
Cobalt (Co): 1.00% siab tshaj
Carbon (C): 0.08% siab tshaj
Hlau (Fe): Sib npaug
Cov ntsiab lus niobium siab dua hauv Inconel 718 yog qhov tseem ceeb rau nws lub hnub nyoog - txheej txheem hardening, uas ua rau nws lub zog nce ntxiv. Qhov no ua rau nws nyiam cov khoom siv hauv siab - ib puag ncig kev ntxhov siab, tshwj xeeb hauv kev lag luam aerospace.
Txheej txheem cej luam ntawm Inconel 725 Alloy
Inconel 725 yog npib tsib xee -chromium- raws siab - kub alloy paub txog nws qhov tshwj xeeb corrosion tsis kam thiab siab zog. Cov khoom tseem ceeb ntawm Inconel 725 suav nrog:
Nickel (Ni): 55-59%
Chromium (Cr): 19-22.5%
Molybdenum (Mo): 7-9.5%
Niobium (Nb): 2.75-4%
Titanium (Ti): Tswj kev sib ntxiv
Lwm cov ntsiab lus: Tswj kev sib ntxiv ntawm cov nyiaj tsim nyog ntawm titanium thiab lwm yam khoom los txhim kho cov khoom tshwj xeeb.
Cov nickel ntau dua thiab molybdenum cov ntsiab lus hauv Inconel 725 txhim kho nws cov corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig hnyav. Cov hlau no tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv kev tiv thaiv pitting thiab crevice corrosion, ua rau nws zoo tagnrho rau kev siv hauv kev lag luam roj thiab roj.
Chemical Composition Comparison: Inconel 718 vs. Nickel 725 thiab Kev Ntsuam Xyuas Ntawm Lub Luag Haujlwm tseem ceeb thiab qhov sib txawv
| Element | Inconel 718 Hom (%) | Nickel 725 Hom (%) | Lub luag haujlwm tseem ceeb & Kev Ntsuas Qhov Sib Txawv |
|---|---|---|---|
| Nickel (Ni) | 50 – 55 | 55 – 59 | Matrix element. Cov ntsiab lus nickel ntau dua hauv 725 txhim kho matrix stability thiab corrosion kuj. |
| Chromium (Cr) | 17 – 21 | 19 – 22.5 | Muab oxidation thiab corrosion kuj. Ob leeg muaj cov ntsiab lus sib piv, tab sis 725 ua tau zoo dua nyob rau hauv acidic ib puag ncig. |
| Hlau (Fe) | Tshuav | Tsawg dua los yog sib npaug rau 7.0 | Qhov tseem ceeb sib txawv.Hlau yog ib qho tseem ceeb alloying nyob rau hauv 718; 725 nruj me ntsis txwv cov ntsiab lus hlau kom txo cov theem tsim teeb meem. |
| Molybdenum (hli) | 2.8 – 3.3 | 7.0 – 9.5 | Qhov tseem ceeb tshaj qhov sib txawv.Cov ntsiab lus siab molybdenum tshwj xeeb hauv 725 (2-3 npaug ntawm 718) ua rau nws tsis muaj kev sib piv rau pitting thiab crevice corrosion. |
| Niobium + Tantalum (Nb + Ta) | 4.75 – 5.5 | 2.75 – 4.0 | Ob leeg muaj niobium rau nag lossis daus ntxiv . 718 muaj cov ntsiab lus niobium ntau dua rau ″ theem tsim; 725's Nb thiab Ta ua hauj lwm ua ke los txhim kho corrosion kuj. |
| Titanium (Ti) | 0.65 – 1.15 | 1.0 – 1.7 | Cov dej nag-lub zog muaj zog. 725 muaj Ti cov ntsiab lus siab dua, ua rau muaj kev ua kom muaj zog ntxiv. |
| Aluminium (Al) | 0.2 – 0.8 | Tsawg dua los yog sib npaug li 0.35 | Al hauv 718 koom nrog ' theem tsim; 725 txwv Al cov ntsiab lus kom txo cov theem nkig. |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.08 | Tsawg dua los yog sib npaug li 0.03 | Qhov tseem ceeb sib txawv.725 muaj cov ntsiab lus tsis tshua muaj carbon tsawg, txo qhov cuam tshuam rau carbide nag lossis daus thaum vuam thiab kho cua sov. |
Inconel 725 vs 718: Qhov sib txawv tseem ceeb thiab kev siv
Mechanical Properties thiab Heat Treatment Comparison
Ob lub alloys tuaj yeem ua tiav lub zog siab los ntawm kev kho cua sov, tab sis cov txheej txheem thiab cov khoom kawg sib txawv.
Inconel 718 Kev kho cua sov thiab cov cuab yeej
Kev kho cua sov txheem:Kev kho cov tshuaj (980 degree) + Ob -theem laus (720℃/ 8h → 620℃/ 8h, rauv txias)
Chav ntsuas kub txhua yam khoom (hnub nyoog mob):
Tensile zog:Ntau dua lossis sib npaug li 1275 MPa
Yield zog:Ntau tshaj lossis sib npaug rau 1035 MPa
Elongation:Ntau dua lossis sib npaug li 12%
Siab - qhov kub thiab txias:Tuav lub zog zoo nyob rau hauv 650-700℃ntau, tab sis lub sij hawm ntev raug tshaj 650℃ua rau "theem" hloov mus rau theem δ ruaj khov, ua rau lub zog qis dua.
Nickel 725 Kev kho cua sov thiab cov cuab yeej
Kev kho cua sov txheem:Kev kho mob (1038-1121 degree) + Kev laus (718-746℃/ 8-12h)
Chav ntsuas kub txhua yam khoom (hnub nyoog mob):
Tensile zog:Ntau tshaj lossis sib npaug rau 1035 MPa
Yield zog:Ntau dua lossis sib npaug li 760 MPa
Elongation:Ntau dua lossis sib npaug li 20%
Yam ntxwv:Txawm hais tias chav tsev kub lub zog yog me ntsis qis dua 718, nws tuav lub zog ruaj khov nyob rau hauv siab - qhov kub thiab txias ib puag ncig, thiab muaj lub zog zoo dua.
Kev sib piv ntawm Vuam thiab Machining Performance ntawm Alloy 718 thiab Nickel 725 Alloys
Weldability:
Qauv Zauv: Inconel 718Weldability zoo heev ntawm nag lossis daus- cov alloys hardening, nrog rau qhov tsis tshua muaj kev cuam tshuam rau kev tshaj tawm -weld cracking, thiab tuaj yeem welded siv ntau txoj kev.
Nickel 725:Weldability zoo, tab sis vim nws qhov qis - carbon tsim thiab cov muaj pes tsawg leeg, kev tswj nruj dua ntawm vuam cov khoom siv hluav taws xob thiab kev siv cov khoom siv vuam sib xws (xws li 625 vuam consumables) yuav tsum tau tiv thaiv kom tsis txhob degradation ntawm cov khoom nyob rau hauv lub tshav kub - cuam tshuam cheeb tsam.
Machineability:
Ob leeg suav hais tias nyuaj- rau- cov khoom siv tshuab.
Inconel 718 (hnub nyoog mob):High hardness, nyuaj rau tshuab, thiab ceev cov cuab yeej hnav.
Nickel 725:Feem ntau kuj siv nyob rau hauv lub hnub nyoog mob; machining nyuaj yog piv rau lossis qis dua 718, tab sis tseem xav tau cov cuab yeej tshwj xeeb thiab cov txheej txheem.
Qhov Zoo Tshaj Plaws:Rau ob qho tib si alloys, nws raug nquahu kom ua cov machining feem ntau hauv cov tshuaj - kho mob, ua raws li kev laus kho.
Vuam thiab Machining Performance ntawm Alloy 718 thiab Nickel 725 Alloys
Kev sib piv ntawm Cov Ntawv Thov Tseem Ceeb ntawm Inconel 718 thiab Inconel 725
Qhov sib txawv hauv cov ntawv thov ncaj qha qhia txog lawv qhov kev ua tau zoo.
Inconel 718 Daim Ntawv Thov Tseem Ceeb:
Aerospace:Dav hlau cav turbine discs, hniav, compressor discs, casings, fasteners.
Gas Turbines:Turbine discs, hniav, combustion chamber Cheebtsam.
Kev lag luam dav dav:Siab - cov khoom siv kev ntxhov siab xav tau lub zog siab thiab nruab nrab corrosion kuj.
Nickel 725 Daim Ntawv Thov Tseem Ceeb:
Roj thiab Roj (Upstream):
Cov cuab yeej ua tiav rau kev sib sib zog nqus- hiav txwv, siab-sulfur (kev pabcuam qaub) roj thiab roj qhov dej (packers, downhole kev nyab xeeb li qub, connectors, thiab lwm yam).
High -lub zog downhole cov khoom siv.
Corrosion- tiv thaiv fasteners thiab li qub hauv cov roj thiab roj tsheb thauj mus los.
Tshuaj thiab Marine:Cov twj tso kua mis, li qub, thiab cov khoom sib txuas tau raug rau cov xov xwm corrosive heev.
Tus nqi ntsuas thiab kev txiav txim siab tsob ntoo
Tus nqi tsav tsheb:
1. Cov nqi raw khoom:Tus nqi ntawm Nickel 725 yog qhov siab dua li Inconel 718 (feem ntau 50% -100% lossis ntau dua), feem ntau yog vim nws cov ntsiab lus ntau dua nickel thiab molybdenum thiab kev tswj hwm nruj dua.
2. Tus nqi ua haujlwm:Ob qho khoom siv muaj cov nqi ua haujlwm siab, tab sis 725 muaj cov nqi tsim khoom ntau dua vim nws cov khoom siv ntau dua thiab cov kev cai nruj dua (xws li SSC kuaj).
3. Daim ntawv pov thawj thiab cov nqi kuaj:725 alloy siv nyob rau hauv acidic ib puag ncig yuav tsum tau ntxiv NACE ntawv pov thawj thiab nws kim heev SSC xeem, nce nqi.
Inconel 718 thiab Alloy 725 Kev Taw Qhia Kev Txiav Txim Siab
Yuav ua li cas xaiv ntawm Inconel 718 thiab Inconel 725?
Inconel 718 thiab Nickel 725sawv cev siab - kawg daws teeb meem rau npib tsib xee-raws li alloys nyob rau hauv ntau yam kev sib tw engineering.
Inconel 718 yog tus qauv ntsuas rau siab - qhov kub thiab txias thiab kev ua haujlwm tag nrho, tsim kom muaj txoj haujlwm tsis muaj zog hauv thaj chaw aerospace thiab lub zog vim nws qhov kev ntseeg tau pov thawj, weldability zoo heev, thiab zoo corrosion kuj.
Nickel 725, ntawm qhov tod tes, yog tus saib xyuas qhov kawg tiv thaiv qhov chaw corrosive, tshwj xeeb tshaj yog tsim los ua kom tau raws li qhov xav tau tshaj plaws ntawm cov roj av acidic thiab roj av. Nws tsis kam mus rau sulfide kev nyuaj siab corrosion cracking thiab localized corrosion yog yuav luag unparalleled.
Tus yuam sij rau kev xaiv yog nyob rau hauv kev txheeb xyuas qhov tseem ceeb tsis ua hauj lwm hauv ib puag ncig: yog tias qhov kub thiab txias thiab cov khoom siv thauj khoom yog qhov kev txhawj xeeb tseem ceeb, 718 yog tus nqi - kev xaiv zoo; Yog hais tias acidic media (tshwj xeeb tshaj yog H2S) corrosion yog thawj qhov kev hem thawj, ces qhov kev nqis peev ntxiv hauv 725 yog qhov tsim nyog thiab tsim nyog, raws li nws ncaj qha cuam tshuam rau kev ncaj ncees thiab kev nyab xeeb ntawm lub cev.
Raws li tus kws tshaj lij kev lag luam nrog cov txheej txheem ua tiav zoo thiab thib peb - muaj peev xwm kuaj xyuas tog neeg,GNEEtuaj yeem muab tag nrho - kev txhawb nqa txheej txheem rau koj cov ntawv thov tseem ceeb, los ntawm cov ntaub ntawv pov thawj thiab cov txheej txheem cov lus pom zoo mus rau kev tshuaj xyuas zaum kawg. Tiv tauj peb hnub no rau cov kws tshaj lij xaiv cov lus qhia thiab cov ncauj lus qhia ntxaws ntxaws raws li koj qhov kev ua haujlwm tshwj xeeb.
Thov hu rau peb rau daim ntawv teev nqi tshiab rauInconel 718 thiab Nickel 725 alloys, NACE MR0175 daim ntawv pov thawj ua raws, thiab kev tshuaj xyuas dawb engineering los txiav txim seb koj daim ntawv thov yuav tsum muaj kev tiv thaiv corrosion zoo tshaj ntawmNickel 725, los yogib 718txaus rau koj cov kev xav tau.
Gnee Steel yog cov chaw tsim khoom ntawm ntau yam nickel{0}}raws li alloys, suav nrog Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 71807, Inconel 7107, Inconel Incoloy 800H / HT, Incoloy 825, Monel Alloy 400, Monel K500, thiab kub kub alloys. Peb tshwj xeeb hauv kev tsim khoom thiab muag khoom ntawm cov ntaub ntawv alloy. Gnee Steel cov khoom siv dav siv hauv aerospace, tshuaj, hluav taws xob, tsheb, thiab nuclear zog kev lag luam, thiab peb tuaj yeem muab cov khoom siv alloy customized raws li cov neeg siv khoom xav tau. Rau cov khoom siv alloy tus nqi nug lossis thov kom haum rau cov khoom siv alloy, thov koj xav tiv tauj peb ntawmru@gneesteelgroup.com rau ib nqe lus.