Steel producing method capable of improving liquid steel casting property
A manufacturing method and technology of molten steel, applied in the field of steel manufacturing, can solve problems such as the difficulty in determining the amount of calcium wire to be fed, not involving the casting performance of molten steel, and the difficulty in grasping the content of inclusions, etc., so as to prevent nodules and improve casting performance , improve the effect of the manufacturing method
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example 1
[0046] Utilize 70 tons of high-impedance ultra-high-power electric arc furnaces to produce 16Mn steel according to the manufacturing method of steel that improves molten steel casting performance according to the present invention, and its processing steps are as follows:
[0047] Initially smelt 69 tons of molten steel in the electric furnace. Add aluminum balls and silicon-aluminum-barium-calcium as a pre-deoxidizer to the ladle during the tapping process for pre-deoxidation, and use bottom blowing argon to stir, wherein, the amount of aluminum balls added is 1.1Kg per ton of steel, silicon-aluminum-barium The amount of calcium added is 3.5Kg per ton of steel. Then lift the ladle containing molten steel to the refining station of the LF furnace, feed 30Kg of aluminum wire, and then add synthetic slag at a rate of 13Kg per ton of steel. In 100 parts by weight of synthetic slag, it contains 65.4 parts by weight of CaO, 17.3 parts by weight of Al2O3, 3.0 parts by weight of SiO...
example 2
[0049] Utilize 70 tons of high-impedance ultra-high-power electric arc furnaces to produce Q345B steel according to the manufacturing method of steel that improves molten steel casting performance according to the present invention, and its process steps are as follows:
[0050] 72 tons of molten steel were initially smelted in the electric furnace. During the tapping process, aluminum balls and silicon aluminum barium calcium are added to the ladle as a pre-deoxidizer for pre-deoxidation, and bottom-blown argon is used to stir. Among them, the amount of aluminum balls added is 1.3Kg per ton of steel, silicon aluminum barium The amount of calcium added is 3.1Kg per ton of steel. Then lift the ladle containing molten steel to the refining station of the LF furnace, feed 40Kg aluminum wire, and then add synthetic slag at 12Kg per ton of steel. In 100 parts by weight of synthetic slag, it contains 65.4 parts by weight of CaO, 17.3 parts by weight of Al2O3, 3.0 parts by weight of...
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