Method for producing high-aluminum steel plate blanks
A steel slab and high-aluminum technology, which is applied in the production field of high-aluminum steel slabs, can solve the problems of complex process, low production efficiency, and difficulty in reaching 1.5wt%, etc., and achieves the effect of simple process, easy control and good ventilation effect.
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Example Embodiment
[0038] Example 1
[0039] This embodiment is used to illustrate the preparation of TRIP600 high-aluminum steel slab according to the method of the present invention.
[0040] (1) Primary refining of converter
[0041] Add 120 tons of molten iron and 10 tons of scrap steel into the 120-ton converter (here, the 120-ton converter refers to the converter’s output of 120 tons), and add high-quality low-sulfur active lime and high-quality slagging materials. The addition is completed 3 minutes before the end point, and the single slag process is used for smelting, and the final slag alkalinity is controlled at about 3.5; once the carbon is pulled, the end pressure gun time is not less than 60s. Blowing ends after 22 minutes, the end point [C] is 0.10wt%, and the end temperature is 1680℃; the converter tapping adopts a sliding plate to stop the slag tapping, and the slag stop makes the amount of slag entering the ladle 5kg / t Tons of steel , When the molten steel reaches 1 / 4, start to add...
Example Embodiment
[0049] Example 2
[0050] This example is used to illustrate the preparation of TRIP600 high-aluminum steel slab according to the method of the present invention.
[0051] In this embodiment, except that 800 kg of synthetic slag is added during the tapping process after the initial refining of the converter, the TRIP600 high-aluminum steel slab is prepared in the same manner as in the first embodiment.
[0052] The method of this embodiment is used to produce TRIP600 high-aluminum steel with an Al content of more than 1.5wt%. The steel grade composition standard and production test data are shown in Table 1.
Example Embodiment
[0053] Example 3
[0054] This example is used to illustrate the preparation of TRIP600 high-aluminum steel slab according to the method of the present invention.
[0055] Except in the continuous casting production process of this embodiment, the addition amount of the tundish covering agent is 0.6kg / t steel Otherwise, a TRIP600 high-aluminum steel slab was prepared in the same manner as in Example 1.
[0056] The method of this embodiment is used to produce TRIP600 high-aluminum steel with an Al content of more than 1.5wt%. The steel grade composition standard and production test data are shown in Table 1.
[0057] Table 1 Steel grade composition (unit: wt%) and properties of Examples 1 to 3
[0058] Test items
[0059] It can be seen from Table 1 above that the TRIP600 high-aluminum steels of Examples 1 to 3 produced according to the method provided by the present invention meet the standard, and the Al content in the high-aluminum steels of each embodiment exceeds 1.5wt%, and T...
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