A kind of high-temperature oxidation-resistant alloy steel and its preparation method
A technology for high-temperature oxidation resistance and alloy steel, applied in the field of alloy steel, can solve the problems of insufficient high-temperature oxidation resistance of materials, high material cost, and high amount of precious alloy elements, so as to achieve good high-temperature oxidation resistance and improve carburization resistance. performance, the effect of excellent high temperature mechanical properties
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Embodiment 1
[0037] Adopt 1000 kilograms of electric induction furnaces to smelt the material of the present invention, concrete process step is:
[0038] (1) Q235 steel scrap with a mass fraction of 40.0% (mass percent: 0.14~0.22C, 0.30~0.65Mn, Si≤0.30, S≤0.050, P≤0.045, Fe balance), 26.5% stainless steel scrap (% is: ≤0.07C, ≤1.0Si, ≤2.0Mn, 17.0~19.0Cr, 8.0~11.0Ni, ≤0.035P, ≤0.03S, Fe balance), 15.0% nickel-based alloy waste (mass percentage % is: ≤0.10C, ≤0.50Mn, ≤0.50Si, ≤0.015P, ≤0.015S, 20.0~23.0Cr, 58.0~60.0Ni, 8.0~10.0Mo, ≤0.40Ti≤0.40Al, ≤5.0Fe, 3.15 ~4.15Nb), 8.3% high-carbon ferrochrome (mass percent: 62.0~68.0Cr, 7.0~8.5C, 2.0~3.5Si, the balance is Fe) and 1.1% tungsten iron (mass percent: 75.0~85.0W, ≤0.4C, ≤0.05P, ≤0.07S, the balance Fe) mixed and heated to melt, the molten steel is melted and then the temperature is measured. When the molten steel temperature reaches 1562°C, add 1.1% ferrosilicon (mass The percentage % is: 74.0-80.0Si, ≤0.5Al, ≤1.0Ca, ≤0.035P, ≤0.02S, ≤0.1C...
Embodiment 2
[0042] Adopt 1000 kilograms of electric induction furnaces to smelt the material of the present invention, concrete process step is:
[0043] (1) Q235 steel scrap with a mass fraction of 40.5% (mass percent: 0.14~0.22C, 0.30~0.65Mn, Si≤0.30, S≤0.050, P≤0.045, Fe balance), 25.0% stainless steel scrap (% is: ≤0.07C, ≤1.0Si, ≤2.0Mn, 17.0~19.0Cr, 8.0~11.0Ni, ≤0.035P, ≤0.03S, Fe balance), 16.0% nickel-based alloy waste (mass percentage % is: ≤0.10C, ≤0.50Mn, ≤0.50Si, ≤0.015P, ≤0.015S, 20.0~23.0Cr, 58.0~60.0Ni, 8.0~10.0Mo, ≤0.40Ti≤0.40Al, ≤5.0Fe, 3.15 ~4.15Nb), 8.0% high-carbon ferrochrome (mass percent: 62.0~68.0Cr, 7.0~8.5C, 2.0~3.5Si, the balance is Fe) and 1.2% tungsten iron (mass percent: 75.0~85.0W, ≤0.4C, ≤0.05P, ≤0.07S, balance Fe) are mixed and heated to melt, and the temperature is measured after the molten steel is melted. The percentage % is: 74.0-80.0Si, ≤0.5Al, ≤1.0Ca, ≤0.035P, ≤0.02S, ≤0.1C, the balance Fe) and the mass fraction of 2.2% ferromanganese (mass percenta...
Embodiment 3
[0047] Adopt 1000 kilograms of electric induction furnaces to smelt the material of the present invention, concrete process step is:
[0048](1) Q235 steel scrap with a mass fraction of 39.55% (mass percent: 0.14~0.22C, 0.30~0.65Mn, Si≤0.30, S≤0.050, P≤0.045, Fe balance), 28.0% stainless steel scrap (% is: ≤0.07C, ≤1.0Si, ≤2.0Mn, 17.0~19.0Cr, 8.0~11.0Ni, ≤0.035P, ≤0.03S, Fe balance), 14.0% nickel-based alloy waste (mass percentage % is: ≤0.10C, ≤0.50Mn, ≤0.50Si, ≤0.015P, ≤0.015S, 20.0~23.0Cr, 58.0~60.0Ni, 8.0~10.0Mo, ≤0.40Ti≤0.40Al, ≤5.0Fe, 3.15 ~4.15Nb), 8.5% high-carbon ferrochrome (mass percent: 62.0~68.0Cr, 7.0~8.5C, 2.0~3.5Si, the balance is Fe) and 1.0% tungsten iron (mass percent: 75.0~85.0W, ≤0.4C, ≤0.05P, ≤0.07S, balance Fe) mixed and heated to melt, the molten steel is melted and the temperature is measured, when the temperature of the molten steel reaches 1569°C, add 1.2% ferrosilicon (mass The percentage % is: 74.0-80.0Si, ≤0.5Al, ≤1.0Ca, ≤0.035P, ≤0.02S, ≤0.1C, ...
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