B-containing hot-rolled steel plate/strip with sulfuric acid dew point corrosion resistance and manufacturing method thereof
A technology for dew point corrosion and hot-rolled steel sheets, which is applied in the field of hot-rolled steel sheets/strips for dew point corrosion resistance of sulfuric acid containing B and its manufacturing field, which can solve the problems of affecting surface quality, uneven cooling, and deterioration of plate shape.
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[0082] The present invention will be further illustrated below with examples, but these examples are by no means any limitation to the present invention. Any changes made by those skilled in the art in the implementation of the present invention under the inspiration of this specification will fall within the protection scope of the claims of the present invention.
[0083] see figure 1, the molten steel conforming to the design of the chemical composition of the present invention is poured directly through the ladle 1, through the ladle long nozzle 2, the tundish 3, the submerged nozzle 4 and the flow distributor 5 in a crystallization chamber that is made of two relatively rotating and capable of rapid cooling. In the molten pool 7 surrounded by the rollers 8a, 8b and the side sealing plate devices 6a, 6b, the molten steel solidifies on the circumferential surface where the crystallization rollers 8a, 8b rotate, and then forms a solidified shell and gradually grows at the pl...
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