US 12,337,364 B2
Bending device, production facility for steel sheet pile, bending method, and production method for steel sheet pile
Hiroshi Yamashita, Tokyo (JP); Shinya Hayashi, Tokyo (JP); and Kazunori Seki, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/800,179
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Mar. 10, 2021, PCT No. PCT/JP2021/009618
§ 371(c)(1), (2) Date Aug. 16, 2022,
PCT Pub. No. WO2021/182529, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-041323 (JP), filed on Mar. 10, 2020; and application No. 2020-041344 (JP), filed on Mar. 10, 2020.
Prior Publication US 2023/0107517 A1, Apr. 6, 2023
Int. Cl. B21B 1/082 (2006.01)
CPC B21B 1/082 (2013.01) 18 Claims
OG exemplary drawing
 
1. A bending device which produces a hat-shaped steel sheet pile by performing bending on a material to be rolled after being subjected to rough rolling, intermediate rolling, and finish rolling in a hot state, in a direction of increasing a cross sectional height of the material to be rolled, the bending device comprising:
a forming stand comprising a forming caliber configured by an upper caliber roll and a lower caliber roll; and
a drive unit driving either the upper caliber roll or the lower caliber roll;
wherein roll diameters of the upper caliber roll and the lower caliber roll are equal; and
wherein the forming caliber is configured to change an angle made by a portion corresponding to a flange of the hat-shaped sheet pile and a portion corresponding to a web of the hat-shaped sheet pile.