UNS N06686 Kev Sau Npe|Txheej txheem|Daim ntawv thov|Lub zog
Inconel 686 (UNS N06686/W.Nr. 2.4606)
Inconel 686 / N06686 yog NI-Cr-Mo cov tshuaj tiv thaiv corrosion-resistant nickel-based alloy. Nws muaj qhov zoo tshaj plaws corrosion kuj nyob rau hauv hnyav corrosive ib puag ncig. Nws yog tsuas yog siv nyob rau hauv chemical processing, pollution control, papermaking, industry and municipal waste. Thaum tshav kub kub exchangers, tshuaj tiv thaiv hlab ntsha, hloov kav dej, thiab lwm yam rau kev ua.
Raws li Huntington Cov Khoom Siv Tshwj Xeeb ntawm Tebchaws Meskas, Inconel 686 alloy, uas muaj corrosion kuj zoo heev, tau hloov K-500 alloy siv rau US Navy ships li connectors. Alloy 686 yog ib qho kev daws teeb meem muaj zog alloy uas tau txais lub zog siab los ntawm kev ua haujlwm txias. Tshwj xeeb, qhov txias-ua hauj lwm 686 alloy qhia tau hais tias zoo heev hydrogen embrittlement kuj thiab corrosion kuj, xws li zoo heev zog, ductility thiab toughness. 1.3 × 33cm (0.5 × 13 nti) bolts yog tsim los ntawm txias-ua tiav 686 alloy rods nrog ib txoj kab uas hla ntawm 38Inm (15 ntiv tes) thiab muaj tus qauv R1Tr qhov kawg tensile zog ntawm 993MPa. Cov txheej txheem bolts no tau ua tiav cov khoom sib txuas thiab cov npoo. Qhov nruab nrab ntawm qhov kev ntsuas nro tau pom qhov ua tau zoo.
Inconel686 (UNS N06686/W.Nr. 2.4606)
chemical muaj pes tsawg leeg (%)
Ni Yu
Cr19 0-23 0
F Tsawg dua lossis sib npaug rau 2.0
Mo15.0-170
Ti002-0.25
W3.0-4.4
C Tsawg dua lossis sib npaug rau 0.01
Mn Tsawg dua lossis sib npaug rau 0.75
S Tsawg dua lossis sib npaug rau 0.02
Si Less dua los yog sib npaug rau 0.08
P Tsawg dua lossis sib npaug rau 0.04
Lub cev muaj zog (chav kub):
Qhov ceev (g / cm3) 8.73
Melting point (degree) 1338-1380
Cov cua kub tshwj xeeb (J / kg- degree) 373
Kev tiv thaiv (ohm circ mil/ft) 744.4
Txoj hauv kev los txhim kho purity thiab homogenization ntawm nickel-raws li alloy pas nrig blanks
Nyob rau hauv lub xyoo caum dhau los los yog li ntawd, qhov kev thov rau nickel-raws li alloy cov ntaub ntawv nyob rau hauv high-end khoom tsim sab nraum Tuam Tshoj lub aerospace kev lag luam tau loj hlob sai nrog rau kev txhim kho ntawm industrialization theem. Nyob rau tib lub sijhawm, cov khoom siv high-end tsim tau nce siab dua qhov yuav tsum tau ua rau qhov zoo ntawm cov khoom siv nickel-based alloy. High purity, homogenization thiab lub neej ua haujlwm ntev tau dhau los ua cov ntsiab lus nyob mus ib txhis hauv kev tsim cov khoom siv nickel-based alloy. Tsis tas li ntawd, qhov kev thov rau cov khoom loj loj ua los ntawm cov khoom siv nickel-based alloy hauv thaj chaw ntawm nuclear zog, hluav taws xob, thiab petrochemicals tseem nce ntxiv, uas ua rau nws nyuaj rau kev txhim kho cov purity thiab homogenization ntawm nickel-based alloy cov ntaub ntawv. Txog rau qhov kawg no, kev hloov pauv thev naus laus zis thiab txheej txheem kev txhim kho cov cuab yeej xws li VOD rauv, lub tshuab nqus tsev vacuum induction furnaces (VIM), lub tshuab nqus hluav taws xob arc furnaces (VAR), inert cua electroslag furnaces (ESR), ceev forging tshuab, thiab radial forging tshuab tau nqa. tawm mus yoog raws li kev xav tau ntawm kev ua lag luam. Xav tau cov ntaub ntawv zoo nickel-based alloy. Qhov no tau txhawb nqa cov ntaub ntawv nickel-based alloy rau hauv cov khoom siv xaiv thiab siv cov khoom siv hluav taws xob hauv tsev nuclear, flue gas turbines, industrial gas turbines, roj thiab roj mining, refining thiab tshuaj, tsheb thauj mus los, kev tiv thaiv ib puag ncig, thiab 700 degree ultra- supercritical fais fab tsim chav tsev tej yaam num. Nyob rau hauv qhov kev pom ntawm qhov zoo ntawm forged npib tsib xee-raws li alloy bar blanks txiav txim siab cov qauv thiab kev ua tau zoo ntawm downstream ntau lawm discs, hniav, nplhaib forgings, rotors, li qub, thiab seamless raj khoom, kab lus no kawm txog kev txhim kho cov purity thiab homogenization. ntawm cov khoom siv nickel-based alloy. .
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Nickel-based alloy cov ntaub ntawv rau kev siv tsis yog aerospace
Nickel-based alloys siv npib tsib xee (los yog ntxiv qee cov hlau los yog cobalt) raws li austenite matrix, xaiv ntxiv chromium, tungsten, molybdenum, thiab niobium cov ntsiab lus rau cov khoom muaj zog ntxiv, thiab xaiv ntxiv aluminium, titanium, thiab niobium ntsiab los tsim ib theem thib ob. nag lossis daus muaj zog, ib hom khoom tshwj xeeb hlau uas xaiv ntxiv cov kab ke xws li boron, cerium, lanthanum, magnesium, thiab zirconium los ntxuav cov ciam teb. Nickel-raws li alloys muab faib ua deformed alloys thiab nrum alloys raws li lawv txoj kev tsim; lawv tau muab faib ua cov tshuaj tov-strengthened alloys thiab hnub nyoog-strengthened alloys raws li lawv txoj kev ntxiv dag zog. Hauv cov khoom siv high-end kev lag luam uas tsis yog aerospace (Table 1), kev siv ib puag ncig ntawm nickel-based alloys feem ntau muab faib ua ob pawg. Ib hom yog siv nyob rau hauv high-kub oxidation tej yam kev mob siab tshaj 600 degree, thiab lwm yam yog siv nyob rau hauv corrosive media hauv qab no 600 degree. siv.
Table 1 Nickel-based alloys muab rau cov chaw tsis yog aerospace thiab lawv cov txheej txheem smelting
Cov khoom uas ua haujlwm nyob rau hauv qhov kub thiab txias oxidation muaj xws li muaj roj turbine turbine discs thiab hniav, chav turbine rotors, hniav thiab bolts, flue gas turbine turbine discs thiab hniav, raws li zoo raws li li qub rau sab hauv combustion locomotives thiab diesel xyaw. Ntxiv nrog rau oxidation tsis kam, nickel-based alloy cov ntaub ntawv rau hom kev siv no kuj yuav tsum muaj chav tsev kub lossis kub siab tensile zog thiab plasticity, lub neej ntev los yog me me creep elongation, thiab zoo qaug zog. . Raws li kev txiav txim siab ntawm cov tshuaj muaj pes tsawg leeg, qhov kub-kub txhua yam khoom ntawm npib tsib xee-raws li alloys nyob ntawm qhov purity ntawm cov khoom thiab cov uniformity ntawm microstructure.
Cov khoom siv hauv cov xov xwm corrosive muaj xws li cov tshuab hluav taws xob hluav taws xob hloov hluav taws xob, cov kav dej roj, cov roj zoo drilling thiab kev sim thiab kev tiv thaiv cov kav dej, cov twj tso kua mis submersible, cov khoom siv kho kom zoo thiab cov khoom siv tshuaj, thiab lwm yam. Ntxiv rau qee qhov yuav tsum tau muaj zog, nickel-based alloys rau hom no. ntawm kev siv kuj them nyiaj tshwj xeeb rau corrosion kuj ntawm cov khoom. Raws li kev txiav txim siab ntawm cov tshuaj muaj pes tsawg leeg, kev suav nrog thiab kev sib cais theem (xws li theem σ nyob rau hauv npib tsib xee-raws li alloys) yog lub ntsiab ua rau kev puas tsuaj rau lub neej kev pab cuam ntawm nickel-based alloys hauv corrosive media.
