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AssigneeNippon Steel Corporation
InventorsShinya HAYASHI, Hiroshi YAMASHITA, Kazunori SEKI, Masanori KAWAI
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To suppress the occurrence of a defective shape such as a flange wave or the like by reverse rolling so as to improve the product dimension accuracy and stability of rolling. A production method for forming a steel sheet pile with flanges from a material to be rolled by caliber roll rolling, includes a step of performing reverse rolling on the material to be rolled by a same caliber, wherein: the step of performing reverse rolling includes a step of forming first flange parts across a neutral line and second and third flange parts arranged on both sides of the first flange parts; the caliber includes first flange facing portions for forming the first flange parts, second flange facing portions for forming the second flange parts, and third flange facing portions for forming the third flange parts; and an inclination angle of the first flange facing portion with respect to a horizontal plane is larger than inclination angles of the second and third flange facing portions.
A production method for forming a steel sheet pile with flanges from a material to be rolled by caliber roll rolling, the production method comprising a step of performing reverse rolling on the material to be rolled by a same caliber, wherein:
A production facility for forming a steel sheet pile with flanges from a material to be rolled by caliber roll rolling, the production facility comprising a rolling mill which performs reverse rolling on the material to be rolled by a same caliber, wherein:
Dependencies are inferred from the claim text.