Lub luag haujlwm ntawm hluav taws xob cua sov chromium hloov pauv sai

Lub luag haujlwm ntawm hluav taws xob cua sov chromium:

Chromium yog lub hauv paus tseem ceeb los txhim kho qhov kub siab oxidation tsis kam ntawm nickel-chromium thiab nickel-chromium-hlau hluav taws xob cua sov alloys. Kev tiv thaiv oxide zaj duab xis tsim los ntawm cov hlau alloy ntawm qhov kub thiab txias yog tsim los ntawm Cr2O3. Cov oxide zaj duab xis feem ntau yog ua los ntawm Cr2O3 yog denser thiab muaj zog yoog raws, uas tuaj yeem ua kom siv tau ntev ntawm cov hlau ntawm qhov kub thiab txias. Cov oxidation tus nqi ntawm cov hlau yuav txo qis thaum cov ntsiab lus chromium nce. Kev sib raug zoo ntawm cov ntsiab lus chromium, kub thiab oxidation tus nqi hauv Fe-Cr system yog qhia hauv daim duab 3-2.

Yuav kom tswj tau qhov zoo oxidation tsis kam ntawm hluav taws xob cua sov alloy ntawm qhov kub thiab txias, nws yuav tsum tau oxidation hnyav nce ntawm lub alloy ntawm qhov kub ntawm no tsis ntau tshaj 2.0*10-2g. cm -2.h-1. Raws li tus nqi no, npib tsib xee-chromium thiab npib tsib xee-chromium-hlau hluav taws xob cua sov alloys muaj 15% ~ 18 feem pua, 19 feem pua ​​~ 23 feem pua ​​​​thiab 28 feem pua ​​​​~31 feem pua ​​​​ntawm Cr, qhov siab tshaj plaws oxidation kuj kub yog sib xws: 900 ~ 950 degree , 1000 ~ 1100 degree Thiab 1000 ~ 1200 degree .

Kev txuag hluav taws xob thiab kev ua tau zoo sib piv ntawm cov khoom siv hluav taws xob ntau zaus thiab cov tshuab hluav taws xob zoo tib yam

High-frequency zog-txuag electromagnetic induction rhaub: siv high-frequency magnetism los tsim eddy tam sim no nyob rau hauv cov hlau thiab sai hloov

Lub hauv paus ntsiab lus ntawm thermal zog, kev siv induction coils los hloov cov pa cua sov, daws qhov kub ntawm oxidation ntawm cov pa cua sov thiab cov cua kub ntau. Lub zog txuag cov nyhuv yog pom tseeb. Lub zog ib cheeb tsam tuaj yeem loj txaus, txuag hluav taws xob thiab nyab xeeb, thiab lub zog hluav taws xob siab yuav tsum tau ua kom muaj peev xwm ntau lawm. , Kev tswj thiab txuag hluav taws xob siv yog qhov kev teeb tsa uas nyiam, uas tuaj yeem daws qhov teeb meem ntawm cov cua sov qeeb thiab txuag hluav taws xob los ntawm 75 feem pua.

Lub tshuab hluav taws xob zoo tib yam: Tsis muaj lub zog txuag hluav taws xob txuag hluav taws xob, uas tsuas yog kwv yees li 30 feem pua ​​​​lub zog txuag dua li cov cua sov.

Kev cuam tshuam ntawm hluav taws xob cua sov alloy ntsiab ntawm oxidation kuj

Nyob rau hauv nickel-chromium thiab nickel-chromium-hlau hluav taws xob cua sov alloys, cov ntsiab lus uas txhim kho oxidation kuj yog chromium thiab silicon. Cov npib tsib xee, hlau, manganese, carbon, thiab lwm yam nyob rau hauv lub alloy muaj ib tug unfavorable nyhuv ntawm high-kub oxidation kuj. Cov kab kawm lanthanum, cerium, Tsis tshua muaj ntiaj teb cov ntsiab lus xws li yttrium tuaj yeem txhim kho oxidation tsis kam ntawm cov hlau.

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