Title:
CORRECTIVE APPARATUS FOR HAT-SHAPED STEEL SHEET PILE, CORRECTION METHOD, AND HAT-SHAPED STEEL SHEET PILE MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2022030377
Kind Code:
A
Abstract:
To provide a correction technique for a hat-shaped steel sheet pile that can suppress deformation in a feeding direction and a width direction of the hat-shaped steel sheet pile.SOLUTION: An apparatus 1 for a hat-shaped steel sheet pile 100 serves to correct the hat-shaped steel sheet pile 100 including a web portion 101, a flange portion 102, an arm portion 103, and a joint portion 104 with rolls of a plurality of upper rolls 2 and a plurality of lower rolls 3 that are arranged in a zigzag shape. A roll radius RA of an arm portion rolling portion 10 that rolls the arm portion 103 under at least one upper roll 2 of the plurality of upper rolls 2 or at least one lower roll 3 of the plurality of lower rolls 3 is greater than a reference value N2 calculated based on an axial center position of the arm portion rolling portion 10 and a target shape of the hat-shaped steel sheet pile 100.SELECTED DRAWING: Figure 1
Inventors:
SAITO TAKATO
GOTO HIROTO
GOTO HIROTO
Application Number:
JP2020134365A
Publication Date:
February 18, 2022
Filing Date:
August 07, 2020
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
B21D3/05
Domestic Patent References:
| JP2008229639A | 2008-10-02 |
Attorney, Agent or Firm:
Ginza Marronnier Patent Office