Inconel 625 vs Inconel 718: Cov khoom sib piv

Thaum tham txog siab -kev ua tau zoo alloys uas yuav tsum tau siv nyob rau hauv huab cua puag, Inconel 625 thiab Inconel 718 feem ntau tshwm sim raws li ob lub npe tseem ceeb tshaj plaws. Cov npib tsib xee-raws li superalloys tau txais lawv lub koob npe nrov los ntawm kev tuaj yeem tiv taus qhov kub thiab txias heev, muaj lub zog zoo thiab corrosion kuj, thiab tseem ceeb heev hauv thaj chaw xws li aerospace, marine, thiab tshuaj ua haujlwm. Txawm li cas los xij, nws muaj tseeb tias lawv tau dhau qee qhov kev hloov pauv. Txhua tus ntawm lawv sib txawv thiab yog li tsim nyog rau ib daim ntawv thov thiab kev mob. Daim ntawv no yog ib qho kev tshawb nrhiav kom ntxaws txog qhov sib txawv loj ntawm Inconel 625 thiab 718. Nws yog lub hom phiaj ntawm kev ua kom koj paub txog lawv qhov zoo thiab qhov tsis zoo thiab cov xwm txheej uas nws yog qhov zoo tshaj plaws los siv lawv txhua tus. Koj tsis tas yuav yog tus engineer lossis tus tsim qauv lossis tsuas yog xav paub txog cov khoom siv siab heev kom tau txais txiaj ntsig ntawm qhov kev sib piv no. Qhov kev sib piv yuav coj koj los ua qhov tsim nyog-txog kev txiav txim siab.

Inconel alloys yog ib pab pawg ntawm superalloys raws li npib tsib xee uas tau lees paub rau lawv qhov zoo tshaj plaws tiv thaiv oxidization, corrosion thiab tshav kub. Cov ntaub ntawv no yog npaj tshwj xeeb los tiv thaiv ib puag ncig huab cua, piv txwv li, kub kub thiab corrosive ib puag ncig. Vim tias lawv cov khoom muaj txiaj ntsig zoo, Inconel alloys pom kev siv dav hauv kev lag luam xws li aerospace, tshuaj ua haujlwm thiab kev siv dej hiav txwv. Lawv lub zog thiab lub neej ntev ua rau lawv tsim nyog rau qhov chaw xws li turbines, cov khoom siv hluav taws xob thiab cov pa tawm thiab yog li kev ntseeg siab hauv kev ua tau zoo yog ua kom ntseeg tau txawm tias nyob rau hauv cov xwm txheej nyuaj tshaj plaws.

Inconel alloys raug faib ua npib tsib xee-chromium-raws li superalloys uas tau lees paub ntau heev rau lawv cov kev tiv thaiv zoo tiv thaiv qhov kub siab, corrosive thiab oxidizing ib puag ncig thiab muaj tseeb yog qhov zoo tshaj plaws ntawm cov ntaub ntawv siv nyob rau hauv xws li high - kev nyuaj siab kev lag luam kev siv.

Aerospace

Lub aerospace sector siv Inconel alloys ntau yam xws li turbine hniav, cov khoom ntawm lub dav hlau cav, thiab qhov chaw ntawm lub tshuab pa. Qhov kub thiab txias thiab siab - cov kev kub ntxhov yog qhov chaw uas cov alloys 'lub zog thiab kev ntseeg tau tuaj yeem ua si, yog li ua kom muaj kev nyab xeeb thaum ya davhlau uas dhau los ntawm cov xwm txheej hnyav.

Kev ua tshuaj lom neeg

Cov alloys no muaj zog heev rau kev tawm tsam ntawm cov neeg ua haujlwm corrosive thiab yog li ntawd, muaj feem xyuam rau kev lag luam tshuaj lom neeg xws li cov khoom siv hluav taws xob, cov reactors, thiab cov kav dej. Lawv lub neej ntev txawm tias nyob rau hauv lub ntsej muag muaj zog acids thiab alkalis yog qhov laj thawj tseem ceeb rau lawv cov kev siv tshuaj lom neeg.

Kev siv Marine

Inconel alloys muaj lub peev xwm zoo tshaj plaws los tiv thaiv cov dej ntsev corrosion thiab yog li yog cov ntaub ntawv zoo tshaj plaws rau cov khoom siv hauv hiav txwv, cov khoom siv hauv nkoj, thiab cov khoom siv roj drilling. Cov yam ntxwv no ua rau ib puag ncig marine tsis tsuas yog corrosive heev tab sis kuj hnyav heev rau cov khoom siv.

Lub zog tiam

Inconel alloys 'lub ntsiab zoo ntawm kub kub thiab oxidation tsis kam yog vim li cas rau lawv siv nyob rau hauv cov roj turbines, nuclear reactors, thiab boiler raj. Lawv muaj peev xwm tiv taus kub heev caij tsheb kauj vab yam tsis muaj kev poob ntawm txhua yam kev ncaj ncees uas, nyob rau hauv lem, ua rau lawv txhim khu kev qha rau lub zog ntau lawm sector.

Automotive Kev Lag Luam

Inconel alloys feem ntau yog siv rau hauv kev siv tsheb uas qhov kev ua tau zoo ntawm lub tsheb yog siab heev, yog li ntawd, cov pa tawm manifolds, turbochargers, thiab tshav kub shields. Lawv lub zog, lub teeb, thiab muaj peev xwm tiv taus qhov kub thiab txias ua rau lawv zoo tshaj plaws rau lub cav thiab tag nrho lub tsheb.

Inconel 625, npib tsib xee - muaj cov superalloy, tau txais txiaj ntsig zoo rau nws lub zog zoo tshaj plaws, kev tiv thaiv corrosion zoo heev, thiab kev ua tau zoo tshaj plaws hauv qhov chaw hnyav tshaj plaws uas muaj cov mob hnyav heev thiab tshuaj lom neeg. Nws yog cov khoom tshwj xeeb no uas yog lub luag haujlwm rau nws txoj kev siv dav hauv aerospace, marine, thiab tshuaj ua lag luam. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm Inconel 625 tau hloov pauv mus rau qhov loj kom tau txais cov qib sib xws ntawm nws cov khoom zoo tshaj.

Hauv qab no yog qhov hnyav feem pua ​​​​ntawm cov kev lees paub tshuaj muaj pes tsawg leeg ntawm Inconel 625:

Nrog cov ntsiab lus siab ntawm Nickel thiab Chromium, cov hlau alloy yog resistant rau oxidation thiab corrosion txawm nyob rau hauv heev hostile tshuaj ib puag ncig. Molybdenum thiab niobium txhim kho lub zog ntawm cov hlau los ntawm cov khoom siv- kev daws teeb meem thiab los ntawm kev cuam tshuam cov qoob loo ciam teb ntawm qhov kub siab dua. Cov ntsiab lus ntawm qhov seem ntawm cov kab lus yog khaws cia nyob rau theem qis kom tsis txhob muaj teeb meem hauv kev ua haujlwm thiab kev ua haujlwm, tab sis tsis poob nws cov khoom siv tshuab.

Kev sib xyaw ua ke ntawm Inconel 625 muaj pes tsawg leeg yog qhov uas nws dhau los ua cov khoom siv niaj hnub xaiv rau cov ntawv thov heev xws li lub tshuab dav hlau, qhov sib sib zog nqus- cov cuab yeej tshawb nrhiav dej hiav txwv, thiab cov tshuaj reactors, qhov twg ob qho tib si lub zog thiab kev ruaj ntseg yog qhov tseem ceeb.

Inconel 718, npib tsib xee-raws li superalloy, yog tus cwj pwm los ntawm nws lub zog txawv tshaj plaw, tiv thaiv corrosion, thiab muaj peev xwm ua haujlwm nyob rau hauv cov xwm txheej hnyav. Nws cov tshuaj muaj pes tsawg leeg yog tsim los kom paub tseeb tias cov khoom siv kho tshuab thiab thermal stability, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias heev. Cov hauv qab no yog ib qho kev piav qhia tag nrho ntawm cov ntsiab lus tseem ceeb thiab lawv cov kev sib xyaw ib txwm muaj nyob hauv Inconel 718:

Nickel (Ni): 50.0-55.0%

Nickel yog lub hauv paus tseem ceeb ntawm cov hlau, nthuav tawm cov oxidation zoo thiab corrosion kuj thiab tib lub sij hawm imparting cov alloy nrog nws siab - kub lub zog.

Chromium (Cr): 17.0-21.0%

Chromium tsis tsuas yog txwv tsis pub oxidation tab sis kuj tseem txhim kho, los ntawm nws cov cim tshuaj tseem ceeb, cov khoom siv tshuaj muaj zog.

Hlau (Fe): Sib npaug

Hlau yog lub ntsiab feature ntawm lub superalloy uas yog nyob rau hauv ib feem thiab loj lub luag hauj lwm rau lub alloy lub zuag qhia tag nrho lub zog los ntawm kev sib xyaw nrog npib tsib xee thiab lwm yam khoom.

Molybdenum (Mo): 2.8-3.3%

Molybdenum yog ib qho khoom siv alloying uas pab tiv thaiv corrosion ntawm pitting thiab crevice uas yog tshwj xeeb tshaj yog muaj nyob rau hauv chloride - muaj ib puag ncig.

Niobium (Nb) + Tantalum (Ta): 4.75–5.50%

Kev sib koom ua ke ntawm niobium thiab tantalum yog ib qho tseem ceeb hauv cov txheej txheem nag lossis daus uas ua rau cov hlau muaj zog thiab nkag mus.

Titanium (Ti): 0.65-1.15%

Titanium pab tsim cov txheej txheem nyuaj carbide thiab nitride uas yog ib qho ntawm cov khoom siv lub zog thaum nws raug kub hnyiab tau ntev.

Aluminium (Al): 0.20-0.80%

Aluminium txo cov khoom oxidation susceptibility ntawm huab cua kub los ntawm qhov chaw tau overlayed los ntawm ib tug tiv thaiv oxide txheej.

Cobalt (Co): 1.0%

Cobalt muab cov txheej txheem ntxiv rau kev tiv thaiv corrosion, tshwj xeeb tshaj yog nyob rau hauv qhov chaw oxidizing heev.

Cov pa roj carbon (C): Max 0.08%

Cov pa roj carbon aids thaum alloying nrog hlau los ntawm kev txhim kho lub zog los ntawm kev tsim carbide, ua kom qhov sib xyaw ua ke.

Manganese (Mn): Max 0.35%

Manganese txhim kho cov khoom ntawm cov khoom thiab tib lub sijhawm, los ntawm nws qhov kev ua hauv kev ua haujlwm kub, txo qhov kev pheej hmoo ntawm kub - tawg.

Silicon (Si): Max 0.35%

Silicon boosts oxidation kuj ntau dua thiab ua ke nrog rau lwm yam mechanisms silicon yuav ua raws li lub tshuab ua pa pab txhawb kev ua tau zoo ntawm qhov kub thiab txias.

Phosphorus (P): Max 0.015%

Tus nqi ntawm phosphorus raug soj ntsuam zoo raws li nws tuaj yeem ua rau cov hlau tsis muaj zog thiab yog li ductility yog qhov tseem ceeb heev.

Sulfur (S): Max 0.015%

Lub xub ntiag ntawm leej faj kuj raug txwv kom txo qis qhov tshwm sim ntawm kub - tawg thiab tib lub sijhawm los lav qhov kev cia siab ntawm cov khoom.

ib 718

Nickel (Ni): 50-55%

Chromium (Cr): 17-21%

Hlau (Fe):Tseem tshuav (~Balance)

Molybdenum (Molybdenum): 2.8-3.3%

Niobium (Nb): 4.75-5.5%

Hastelloy C-276

Nickel (Ni):Tseem tshuav (~Balance)

Molybdenum (Molybdenum): 15-17%

Chromium (Cr): 14.5-16.5%

Hlau (Fe): 4-7%

Tungsten (W): 3-4.5%

Monel 400

Nickel (Ni):63% yam tsawg kawg nkaus

Copper (Cu): 28-34%

Hlau (Fe):2.5% siab tshaj

Manganese (Mn):2% siab tshaj

Cov pa roj carbon (C):0.3% siab tshaj

Titanium alloy (Ti-6Al-4V)

Titanium (Ti):Tseem tshuav (~Balance)

Aluminium (Al): 5.5-6.75%

Vanadium (V): 3.5-4.5%

Hlau (Fe):0.4% siab tshaj

Cov pa oxygen (O):0.2% siab tshaj

Stainless hlau 316

Hlau (Fe):Tseem tshuav (~Balance)

Chromium (Cr): 16-18%

Nickel (Ni): 10-14%

Molybdenum (Molybdenum): 2-3%

Cov pa roj carbon (C):0.08% siab tshaj

Inconel 625, npib tsib xee-raws li superalloy, yog ib yam khoom uas tau txais kev qhuas heev rau nws cov khoom siv kho tshuab zoo heev thiab ua haujlwm rau qhov chaw huab cua. Yog li ntawd, nws yog dav siv nyob rau hauv aerospace, marine, tshuaj, thiab lub zog sectors. Ntawm no yog ib qho kev nthuav dav ntawm nws cov yam ntxwv tseem ceeb tshaj plaws ntawm kev siv tshuab:

Inconel 718 yog superalloy uas paub zoo rau nws cov khoom zoo heev ntawm lub zog, toughness, thiab corrosion kuj. Yog li ntawd, nws tuaj yeem ua haujlwm hauv cov ntawv thov nyuaj tshaj plaws xws li aerospace, nuclear, thiab marine industries. Ntawm no yog cov cuab yeej kho tshuab ntawm no alloy tau piav qhia meej:

Siab Tensile zog

Inconel 718 muaj lub zog tensile sib txawv ntawm 930 MPa rau 1400 MPa (135 ksi txog 203 ksi), raws li kev kho cua sov thiab kev thov. Nws qhov kev ua tau zoo heev tau lees paub nyob rau hauv cov txheej txheem tseem ceeb tshaj plaws thiab siab - ib puag ncig siab.

Yield zog

Feem ntau, cov txiaj ntsig zoo ntawm cov hlau no yog kwv yees li 550 txog 1200 MPa (80 txog 174 ksi), uas txhais tau hais tias nws tuaj yeem tiv taus hnyav hnyav yam tsis muaj kev hloov pauv.

Creep Resistance

Cov khoom siv tuaj yeem siv rau ntawm qhov ntsuas kub ntawm 700℃(1292℃F) thiab tseem muaj qhov tsis zoo ntawm qhov tsis ua haujlwm vim qhov nkag, uas yog qhov deformation qeeb heev ntawm cov khoom nyob rau hauv qhov kub thiab txias. Tias yog vim li cas cov khoom siv yog suav tias yog tsim nyog rau lub turbine nyob rau hauv lub dav hlau cav uas ua hauj lwm nyob rau hauv high kub, qhov twg nws yog ncaj qha mus rau qhov kub tshaj plaws ntawm lub engine.

Kev qaug zog

Cov khoom tsis tso tseg yooj yim thaum nws tuaj yeem tiv taus qaug zog. Nws withstands tag nrho cov imposed mechanical oscillations thiab yog li ua rau lub voj voog ntawm loading thiab unloading ntawm cov khoom mus.

Hardness

Lub alloy muaj ib tug hardness tus nqi uas yuav yog Rockwell C30 rau C45 nyob ntawm seb qhov kev kho cua sov nws undergoes.

Impact Toughness

Qhov kub thiab txias tsis tau txhais hais tias Inconel 718 tsis muaj zog ntxiv lawm vim tias cov hlau tseem muaj qhov tseem ceeb ntawm cov tawv nqaij; li no nws versatility thiab kev ntseeg tau.

Mechanical zog ntawm cov ntaub ntawv yog tag nrho txiav txim los ntawm lawv cov muaj pes tsawg leeg, ua, thiab daim ntawv thov. Hauv qab no yog tsib qhov sib txawv tseem ceeb hauv cov khoom siv kho tshuab ntawm cov khoom siv ib txwm siv, ntawm ib sab, thiab Inconel 718, ntawm qhov tod tes:

Thaum ntsuas qhov tsis kam ntawm cov ntaub ntawv rau corrosion los ntawm hnyav ib puag ncig, nws yog ib qho yuav tsum tau coj mus rau hauv tus account ntau yam thiab cov ntsiab lus ntawm cov ntaub ntawv. Kev tiv thaiv corrosion yog zoo heev, tshwj xeeb tshaj yog rau stainless hlau, titanium alloys, thiab Inconel 718, nrog rau kev ua tau zoo txiav txim siab los ntawm kev muab cov kev tiv thaiv. Nov yog tsib qhov teeb meem loj:

Tau txais daim ntawv teev cov khoom tiav