Method for producing H-shaped steel
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United States of America
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Apr 5, 2022
Grant Date -
Sep 10, 2020
app pub date -
Jan 11, 2019
filing date -
Jan 11, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A large-size H-shaped steel product is produced by performing a rough rolling step including an edging rolling step of rolling and shaping a material to be rolled into a predetermined almost dog-bone shape, and a flat rolling step of performing rolling of a web part by rotating the material to be rolled after completion of the edging rolling step by 90° or 270°, upper and lower caliber rolls of at least one caliber of calibers configured to perform the flat rolling step include recessed parts configured to form a raised part at a middle of a web part of the material to be rolled, the recessed parts being provided at roll barrel length middle parts of the upper and lower caliber rolls.
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