A kind of high manganese steel molten steel purification method, product and application
A technology of high manganese steel and liquid steel, applied in the field of high manganese steel, can solve the problems of deterioration of high manganese steel mechanical properties, waste of rare earth, incomplete melting, etc.
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Embodiment 1
[0028] The high manganese steel is smelted in an electric arc furnace, and the high manganese steel molten steel is poured into two 10-ton ladles of the same capacity when the steel is tapped at 1500°C, which are respectively recorded as No. 1 ladle and No. 2 ladle. Ladle No. 1 is used to produce high manganese steel frogs according to the conventional deoxidation and casting process (using aluminum wire for deoxidation operation, and the casting process is common casting). After the No. 2 ladle is poured into the molten steel, high-purity nitrogen gas is introduced into the bottom of the ladle immediately, and the nitrogen pressure is kept at 0.4MPa. First, feed silicon-aluminum-barium-calcium alloy wire with a diameter of 13mm into the molten steel, the amount added is 10m per ton of steel, and the wire feeding speed is 10m / s to complete the deoxidation treatment of the high manganese steel molten steel. Then feed the special heavy rare earth alloy wire with a diameter of 13...
Embodiment 2
[0035] The high-manganese steel is smelted in an electric arc furnace, and the molten steel is poured into two ladles of the same capacity when the steel is tapped at 1495°C, which are respectively recorded as No. 1 ladle and No. 2 ladle. Ladle No. 1 is used to produce high manganese steel frogs according to the conventional deoxidation and casting process (using aluminum wire for deoxidation operation, and the casting process is common casting). After the No. 2 ladle is poured into molten steel, high-purity nitrogen gas is introduced into the bottom of the ladle immediately, and the nitrogen pressure is kept at 0.5MPa. Firstly, feed silicon-aluminum-barium-calcium alloy wire with a diameter of 13mm into the molten steel, the amount added is 11m per ton of steel, and the wire feeding speed is 9m / s to complete the deoxidation treatment of the high manganese steel molten steel. Then feed the special heavy rare earth alloy wire with a diameter of 13mm into the molten steel. The c...
Embodiment 3
[0042] The high manganese steel is smelted in an electric arc furnace, and the high manganese steel molten steel is tapped at 1500°C. The deoxidation operation is to insert pure aluminum to remove oxygen. The insertion amount is 1.2kg / ton of steel. During the deoxidation process, nitrogen is not blown into the ladle. Then feed the special heavy rare earth alloy wire with a diameter of 13mm into the molten steel. The chemical composition (wt.%) of the heavy rare earth alloy is RE: 42% (wherein Y accounts for 60% of the total rare earth, La accounts for 15%, Ce 25%), Si: 6%, Al: 13%, Ba: 10%, Ca: 11%, and the balance is Fe. The addition amount of heavy rare earth alloy wire is 11m per ton of steel, and the addition speed is 6m / s. When the molten steel cools down to 1450°C, start casting high manganese steel frogs. Manufacture high manganese steel frog casting cavity by fat hardening molding process. After testing, the chemical composition (wt.%) of the cast high manganese stee...
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