Dab tsi yog qhov sib txawv ntawm Inconel 600 thiab 690 alloys?
Dab tsi yog qhov sib txawv ntawm Inconel 600 thiab 690 alloys?
Inconel 600 thiab 690 yog ob qho tib si npib tsib xee-chromium alloys, tab sis Inconel 690 muaj cov ntsiab lus chromium ntau dua (kwv yees li 27-31%) dua Inconel 600 (14-17%), thaum nws cov ntsiab lus nickel (kwv yees li 508%) conapps qis dua 72%). Qhov no ua rau 690 deb tshaj li 600 nyob rau hauv cov nqe lus ntawm kev tiv thaiv oxidation corrosion thiab kev nyuaj siab corrosion cracking (SCC), tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov xws li nuclear chav generators. Txawm li cas los xij, 600, vim nws cov ntsiab lus nickel ntau dua, ua kom pom kev ua haujlwm kub zoo dua. Inconel 690 tuaj yeem suav tias yog qhov hloov kho tshiab ntawm 600, muab kev txhim kho corrosion kuj nyob rau hauv qhov hnyav aqueous ib puag ncig.
Dab tsi yog cov ntawv thov ntawm Inconel 690 alloy?
Vim nws zoo heev - kub lub zog, corrosion kuj, thiab thermal stability, Inconel 690 alloy yog dav siv nyob rau hauv kev tsim cov khoom siv hluav taws xob nuclear, xws li vuam ntawm cov kav dej hauv cov tshuab hluav taws xob thiab cov hlab ntsha siab. Txawm li cas los xij, cov nplej coarsening tau pom nyob rau hauv cov pob qij txha ntawm Inconel 690.
Inconel 600 alloy yog dab tsi?
Inconel 600 yog npib tsib xee -chromium- hlau raws alloy nrog zoo heev - kub tsis kam thiab corrosion kuj. Nws cov khoom tseem ceeb suav nrog kwv yees li 77% npib tsib xee, 16% chromium, thiab 6% hlau. Nws yog dav siv nyob rau hauv aerospace, nuclear zog, petrochemicals, thiab lwm yam kev lag luam, tshwj xeeb tshaj yog nyob rau hauv siab - kub thiab hnyav chemical ib puag ncig. Cov hlau no tuav tau zoo thermal zog thiab ductility hauv qab 700 degree, thiab tuaj yeem tiv taus luv luv -lub sij hawm siv kub txog li 1200℃.
Inconel 690 alloy yog dab tsi?
Inconel 690 (nickel-raws li 690 alloy) yog npib tsib xee-raws siab- kub alloy nrog lub ntsiab ntawm npib tsib xee (Ntau dua lossis sib npaug li 59%), chromium (27{10}}31%), thiab hlau (7{11}}11%). Nws yog dav siv nyob rau hauv kev tsim cov cua kub exchanger raj rau chav generators nyob rau hauv pressurized dej reactor (PWR) nuclear fais fab nroj tsuag. Los ntawm kev ua kom zoo dua cov ntsiab lus chromium thiab cov txheej txheem kev kho cua sov, cov hlau no ua kom nws cov kev tiv thaiv rau intergranular corrosion thiab kev ntxhov siab corrosion cracking, ua tau raws li qhov yuav tsum tau muaj ntawm cov dej kub thiab cov dej kub siab. Tam sim no, cov hlau no tau dav siv los ua cov khoom siv hluav taws xob hloov hluav taws xob hauv PWR nuclear fais fab nroj tsuag hauv kev tsim kho thiab hauv kev npaj.
Qhov sib txawv tseem ceeb ntawm Inconel 600 thiab 690 nyob hauv lawv cov ntsiab lus chromium:
Inconel 600 alloy muaj kwv yees li 14-17% chromium thiab ntau dua nickel cov ntsiab lus (tshaj 72%), ua rau nws tsim nyog rau qhov kub thiab txias; thaum Inconel 690 alloy muaj cov ntsiab lus chromium ntau dua (txog 31%) thiab cov ntsiab lus nickel qis (tshaj 58%), ua rau muaj kev tiv thaiv corrosion zoo dua, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig corrosive xws li nuclear chav generators. Nws tsis kam mus rau kev ntxhov siab corrosion cracking (SCC) yog qhov zoo tshaj ntawm Inconel 600, ua rau nws hloov ntawm Inconel 600 hauv cov ntawv thov tseem ceeb. Cov ntsiab lus chromium ntau dua ntawm Inconel 690 txhim kho nws txoj kev tiv thaiv rau cov kua qaub, alkalis, thiab dej kub, ua rau nws tsim nyog rau kev thov tshuaj lom neeg / nuclear; Thaum cov ntsiab lus nickel ntau dua ntawm Inconel 600, txawm hais tias muab lub zog kub kub zoo, ua rau nws muaj kev cuam tshuam rau kev ntxhov siab corrosion.
Tshuaj muaj pes tsawg leeg: Inconel 600 vs. Inconel 690 Alloys
| Element (% los ntawm qhov hnyav) | Inconel 600 (UNS N06600) Lub cev muaj zog | Inconel 690 (UNS N06690) Cov. |
|---|---|---|
| Nickel (Ni) | 72.0 nqi | 5 8,0mn |
| Chromium (Cr) | 14.0 – 17.0 | 27.0 – 31.0 |
| Hlau (Fe) | 6.0 – 10.0 | 7.0 – 11.0 |
| Cov pa roj carbon (C) | 0.15 max | 0.05 max |
| Manganese (Mn) | 1.0 max | 0.5 max |
| Copper (Cu) | 0.5 max | 0.5 max |
| Silicon (Si) | 0.5 max | 0.5 max |
| Sulfur (S) | 0.015 max | 0.015 max |
| Phosphorus (P) | 0.015 max | – |
| Aluminium (Al) | – | 0.5 max |
| Titanium (Ti) | – | 0.5 max |
| Cobalt (zeeg) | – | 0.1 max |
Inconel 600 (UNS N06600) Lub cev muaj zog
Cov khoom xyaw: Cov ntsiab lus nickel siab (~ 72% lossis ntau dua), nruab nrab chromium cov ntsiab lus (14-17%).
Qhov zoo: Zoo siab -kub oxidation thiab corrosion kuj, tsis yog -magnetic.
Daim ntaub ntawv: Rauv Cheebtsam, chemical processing.
Inconel 690 (UNS N06690) Cov.
Muaj pes tsawg leeg: qis nickel cov ntsiab lus (~ 58%), cov ntsiab lus chromium siab (txog 31%).
Qhov zoo: Kev tiv thaiv zoo heev rau kev ntxhov siab corrosion tawg (ntau tshaj 100 npaug zoo dua 600 alloy), zoo heev corrosion kuj rau ntau yam acids (nitric acid, hydrofluoric acid) thiab alkaline daws, txhim kho corrosion kuj.
Daim ntaub ntawv: Nuclear steam generator raj (hloov 600 alloy), petrochemical heaters, hlau pickling, siab - kub burners.
Mechanical Properties: Inconel 600 vs Inconel 690 Alloys
| Khoom | Inconel 600 (Tswj) | Inconel 690 (Tswj) |
|---|---|---|
| Tensile zog | 550 - 655 MPa | 655 - 760 MPa |
| Yield zog (0.2% Offset) | 240 - 415 MPa | 310 - 415 MPa |
| Elongation (hauv 50 mm) | 40 - 55 % | 40 - 55 % |
| Hardness | 150 - 220 HB | 170 - 230 HB |
| Modulus ntawm Elasticity (Young's Modulus) | 214 GPA | 210 GPa |
| Fatigue Strength (Rotating Beam, 10⁸ cycles) | ~ 240 MPa | ~ 280 MPa |
| Shear Modulus | 79gp ua | 78gp ua |
Daim ntaub ntawv: Inconel 600 vs. Inconel 690 Alloys
| Kev lag luam / Daim Ntawv Thov Cheeb Tsam | Inconel 600 | Ib 690 |
|---|---|---|
| Core Application Principple | Siab -kub oxidation kuj, dav corrosion kuj nyob rau hauv uas tsis yog - chloride, siab - tshav kub ib puag ncig. | Kev tiv thaiv zoo tshaj plaws rau kev ntxhov siab corrosion cracking thiab oxidation nyob rau hauv siab -kub aqueous, caustic, thiab hnyav oxidizing acid ib puag ncig. |
| Thermal Processing & Rauv | Kev Siv Tseem Ceeb: Radiant tubes, muffles, retorts, furnace rollers, baskets, and fixtures. | Siv nyob rau hauv tshwj xeeb siab -kub tshuaj / tshav kub- kho qhov cub nrog hnyav oxidizing / corrosive cua. |
| Nuclear Power Generation | Keeb kwm siv nyob rau hauv chav generators thiab reactor internals; tam sim no feem ntau hloov pauv rau SCC- cov khoom siv yooj yim. | Niaj hnub Standard:Steam generator tubing, reactor hlab ntsha internals, nuclear pov tseg ua khoom siv. Kev hloov pauv rau Alloy 600 hauv PWRs. |
| Tshuaj & Petrochemical | Thaum tshav kub kub exchanger tubing (kev pab huv si), khoom siv rau caustic (NaOH) ntau lawm. | Thaum tshav kub kub exchanger thiab condenser tubing rau aggressive oxidizing acids (xws li, nitric acid) thiab hnyav caustic ib puag ncig. |
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