Reform manner of the U die steel sheet-pile, the reform device null web section of the U

摘要

PROBLEM TO BE SOLVED: To easily straighten bend of front and rear ends of a hat-shaped steel sheet pile.;SOLUTION: A bend straightening device comprises upper and lower rollers 21, 22, 21', 22' to roll down a joint supporting part 103 of a hat-shaped steel sheet pile 100, and a joint supporting part roll-down control unit 34 to control the draft of joint supporting parts 103, 103' by the upper and lower rollers 21, 22, 21', 22' by draft adjustment units 23, 23' based on the bending direction of the hat-shaped steel sheet pile 100, and further comprises upper and lower rollers which are arranged on the upstream side and the downstream side of the upper and lower rollers 21, 22, 21', 22' in the sheet passing direction of the hat-shaped steel sheet pile 100 to roll down a web part 101 and a web part draft control unit to control the rolling draft of the web part 101 by the upper and lower rollers.;COPYRIGHT: (C)2006,JPO&NCIPI