Method for producing iron-chromium electrothermal alloy with scrap iron
A technology of electric heating alloy and scrap iron, which is applied in the field of alloy materials, can solve the problems of limiting the scope of use and shortening the service life, etc., and achieve the effects of improving oxidation resistance, improving fast life, and improving bonding strength
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Embodiment 1
[0016] A method for producing iron-chromium electric heating alloys from scrap iron, comprising the following steps:
[0017] (1) take by weight the scrap iron of 62% and the ferrochrome of 38%;
[0018] (2) Carry out smelting, the smelting temperature is more than 1700 ℃, so that iron scrap and ferrochrome are melted into molten steel, and then nitrogen is blown to the bottom of the molten steel;
[0019] (3) Adjust the temperature of the molten steel to 1450°C, then add the dephosphorizing agent to the molten steel, and add the desulfurizing agent after 15 minutes. The amount of dephosphorizing agent added is controlled at 5kg / t molten steel, and the amount of desulfurizing agent added is controlled at 6kg / t Molten steel is subjected to dephosphorization and desulfurization treatment;
[0020] (4) Carry out refining, adjust the oxygen supply intensity and carry out decarburization treatment, when the carbon content is lower than 0.02%, stop the oxygen supply, add trace elem...
Embodiment 2
[0022] A method for producing iron-chromium electric heating alloys from scrap iron, comprising the following steps:
[0023] (1) take by weight the scrap iron of 64% and the ferrochrome of 36%;
[0024] (2) Carry out smelting, the smelting temperature is more than 1700 ℃, so that iron scrap and ferrochrome are melted into molten steel, and then nitrogen is blown to the bottom of the molten steel;
[0025] (3) Adjust the temperature of the molten steel to 1450°C, then add the dephosphorizing agent to the molten steel, and add the desulfurizing agent after 15 minutes. The amount of dephosphorizing agent added is controlled at 6kg / t molten steel, and the amount of desulfurizing agent added is controlled at 7kg / t Molten steel is subjected to dephosphorization and desulfurization treatment;
[0026] (4) Carry out refining, adjust the oxygen supply intensity and carry out decarburization treatment, when the carbon content is lower than 0.02%, stop the oxygen supply, add trace elem...
Embodiment 3
[0028] A method for producing iron-chromium electric heating alloys from scrap iron, comprising the following steps:
[0029] (1) take by weight the scrap iron of 65% and the ferrochrome of 35%;
[0030] (2) Carry out smelting, the smelting temperature is more than 1700 ℃, so that iron scrap and ferrochrome are melted into molten steel, and then nitrogen is blown to the bottom of the molten steel;
[0031] (3) Adjust the temperature of molten steel to 1450°C, then add dephosphorization agent to molten steel, add desulfurization agent after 15 minutes, control the amount of dephosphorization agent added at 7kg / t molten steel, and control the amount of desulfurizer added at 8kg / t Molten steel is subjected to dephosphorization and desulfurization treatment;
[0032] (4) Carry out refining, adjust the oxygen supply intensity and carry out decarburization treatment, when the carbon content is lower than 0.02%, stop the oxygen supply, add trace elements in the refining process, the...
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