Production method of low-aluminum carbon structural molten steel
A production method and molten steel technology, applied in the field of steel smelting and continuous casting, can solve the problems of poor cleanliness and high deoxidation cost of carbon structural steel, and achieve the goals of improving the cleanliness of molten steel, promoting floating removal, and inhibiting silica reaction Effect
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[0026] Below in conjunction with specific embodiment 1-6, further illustrate the present invention.
[0027] In the embodiment of the present invention, 250 tons of low-aluminum carbon structural steel in the top-bottom combined blowing converter are used, wherein the smelted steel grades in Examples 1, 2 and 3 are all Q235, and the smelted steel grades in Embodiments 4, 5 and 6 are all Q345; The production method includes: converter smelting, molten steel treatment at an argon blowing station. The control parameters of molten steel production in the embodiment of the present invention are shown in Table 1 to Table 6.
[0028] Table 1 Parameters of converter smelting metal material in the embodiment of the present invention
[0029]
[0030] Table 2 Composition and temperature of molten steel at the end point of converter smelting
[0031]
[0032] Table 3 Auxiliary materials and alloy additions in the converter tapping process, unit: kg / ton steel.
[0033] Sto...
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