Preparation method of anti-oxidation electrothermal alloy
An electrothermal alloy, anti-oxidation technology, applied in heat treatment equipment, heat treatment furnaces, manufacturing tools, etc., can solve problems such as weak oxidation resistance, and achieve the effects of low development cost, increased life, and grain refinement
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[0028] The invention provides a preparation method of an anti-oxidation electric heating alloy, which is used to improve the oxidation resistance of the iron-chromium-aluminum electric heating alloy during use.
[0029] Hereinafter, embodiments of the present invention will be described in detail.
Embodiment 1
[0031] A preparation method of oxidation-resistant electric heating alloy includes the following steps:
[0032] (1) Put industrial pure iron, metallic chromium and metallic aluminum as the charge, put them into an intermediate frequency vacuum induction furnace to control the melting temperature at 1750~1850℃, and completely melt after 30~45min;
[0033] (2) Further smelting, under the protection of high-purity argon gas, add 0.04% yttrium and cerium mass fraction into the induction furnace, and let it stand for 4-10 min after melting, the mass ratio of yttrium to cerium is 1:3;
[0034] (3) Remelting is used for further refining, refining at least 2 times, the melting materials are mutually soluble, after smelting, the tapping temperature is controlled to 1650℃, the chemical composition of the alloy is 22.80% Cr, 5.6% Al, and 0.01% Ce 0.03% , C≤0.03%, P≤0.03%, S≤0.03%, Si≤0.03%, the balance is Fe. ;
[0035] (4) Cast the molten steel in step (3) into alloy ingots, heat the alloy in...
Embodiment 2
[0039] A preparation method of oxidation-resistant electric heating alloy includes the following steps:
[0040] (1) Put industrial pure iron, metallic chromium and metallic aluminum as the charge, put them into an intermediate frequency vacuum induction furnace to control the melting temperature at 1750~1850℃, and completely melt after 30~45min;
[0041] (2) Further smelting, under the protection of high-purity argon gas, add 0.06% yttrium and cerium mass fraction into the induction furnace, and let it stand for 4-10 min after melting, the mass ratio of yttrium to cerium is 1:5;
[0042] (3) Remelting is used for further refining, refining at least 2 times, and the melting materials are mutually soluble. After smelting, the tapping temperature is controlled to 1650℃, and the chemical composition of the alloy is 22.68% Cr, 5.32% Al, and 0.01% Ce 0.05%. , C≤0.03%, P≤0.03%, S≤0.03%, Si≤0.03%, the balance is Fe. ;
[0043] (4) Cast the molten steel in step (3) into alloy ingots, heat th...
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