Dab tsi yog qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm Monel, Inconel, Incoloy thiab Hastelloy qib?
Dab tsi yog qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm Monel, Inconel, Incoloy thiab Hastelloy qib?
Txheej txheem cej luam
Monel 400, Monel K-500, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H, Incoloy 825, Incoloy A-286 thiab Hastelloy C{{10 }} yog cov qib nickel alloy feem ntau. Cov tshuaj muaj pes tsawg leeg yog raws li nram no:
Hauv tsab xov xwm no, peb yuav tshawb xyuas ua ke lub luag haujlwm thiab qhov cuam tshuam ntawm cov tshuaj sib txawv hauv cov qib no.
Lub luag haujlwm ntawm cov khoom sib txawv hauv cov nickel alloys
Nickel alloys yog cov khoom siv dav tshaj plaws thiab muaj zog tshaj plaws high-temperature alloys. Nickel nyob rau hauv npib tsib xee alloy yog ib qho austenite stabilizing lub caij, uas ua rau cov nickel alloy tswj FCC qauv, yog li dissolving ntau lwm yam alloying ntsiab thaum uas tswj cov qauv zoo stability thiab cov khoom yas.
Cr, Mo, thiab Al ua si lub luag haujlwm antioxidant thiab tiv thaiv corrosion, thiab muaj qee yam kev txhawb zog. Cov qauv ntawm kev ua ntawm nickel alloy ntxiv dag zog rau cov ntsiab lus tuaj yeem muab faib ua peb hom hauv qab no:
Ⅰ. Solid tov ntxiv dag zog rau cov ntsiab lus
Vim muaj qhov sib txawv ntawm cov atomic radii ntawm cov hauv paus atoms, cov khoom siv ntxiv dag zog rau cov ntsiab lus (xws li W, Mo, Co, Cr, V, thiab lwm yam) tuaj yeem tsim cov kab lattice hauv zos hauv Ni-Fe qauv kom ua tiav cov txiaj ntsig ntawm kev ntxiv dag zog rau cov khoom.
Ⅱ. Precipitation txhawb cov ntsiab lus
Los nag ntxiv dag zog rau cov ntsiab lus xws li Al, Ti, Nb, Ta, thiab lwm yam tuaj yeem tsim tag nrho cov txheej txheem A3B-hom intermetallic tebchaw, xws li Ni3 (Al, Ti) thiab lwm qhov ntxiv dag zog ('), kom cov alloy tuaj yeem ua kom muaj zog zoo thiab tau txais txiaj ntsig zoo dua li hlau. Kev kub siab kub lub zog ntawm lub hauv paus alloys thiab cobalt raws li alloys.
3. Cov ciam teb ntxiv dag zog rau cov ntsiab lus
Cov ciam teb ntxiv dag zog, xws li B, Zr, Mg, cov ntsiab lus tsis tshua muaj hauv ntiaj teb, thiab lwm yam, tuaj yeem txhim kho qhov kub thiab txias ntawm cov hlau.
Qhov sib txawv ntawm Monel, Inconel, Incoloy thiab Hastelloy Qib
Feem ntau, qib ntawm nickel alloys muaj npe los ntawm cov tuam txhab tsim khoom. Piv txwv li:
Ni-Cu alloy tseem hu ua Monel alloy, xws li Monel 400 thiab Monel K-500.
Ni-Cr alloys feem ntau hu ua Inconel alloys, xws li Inconel 600 thiab Inconel 625, uas yog cov khoom siv kub-resistant nickel alloys. Lawv tsuas yog siv nyob rau hauv oxidizing media tej yam kev mob.
Yog tias muaj ntau cov hlau ntxiv rau Inconel alloy es tsis txhob npib tsib xee, nws yuav dhau los ua Incoloy alloy, xws li Incoloy 800, Incoloy 825, thiab lwm yam. Lawv tsis tuaj yeem tiv taus qhov kub thiab txias li nag lossis daus hardened nickel alloys, tab sis lawv pheej yig dua. Lawv tuaj yeem siv rau hauv cov khoom siv cryogenic ntawm cov tshuab dav hlau thiab cov reactors hauv cov nroj tsuag petrochemical.
Yog tias nag lossis daus ntxiv cov ntsiab lus (Ti, Al, Nb, thiab lwm yam) ntxiv rau Inconel thiab Incoloy, nws yuav dhau los ua nag lossis daus hardening npib tsib xee alloys xws li Inconel 718 thiab Incoloy A-286, uas tseem tuaj yeem tuav tau zoo txhua yam muaj zog thiab corrosion. tsis kam ntawm qhov kub thiab txias. Lawv tsuas yog siv rau hauv cov khoom siv dav hlau dav hlau.
Ni-Cr-Mo(-W)(-Cu) alloy yog hu ua Hastelloy, uas Ni-Cr-Mo feem ntau yog siv los txo cov xov xwm corrosion. Cov qib sawv cev ntawm Hastelloy suav nrog Hastelloy C-276, C-2000, thiab lwm yam.
