METHOD FOR STRAIGHTENING HAT TYPE STEEL SHEET PILE ,AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a method for straightening a hat type steel sheet pile by which the change in the width of a material to be straightened in accordance with the alternation of rolling reduction can be suppressed without depending on shape adjustment of straightening rollers.;SOLUTION: By using small rollers 3, 3A, 3B, 3C, 4, 4A, 4B which ascend and descend in accordance with the rolling reduction of the straightening rollers while restraining a flange part 12 by standing against the straightening rollers 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C which become the force points of three-point supporting repeat bending, the sheet pile is straightened while suppressing the change of the width of the material to be straightened in straightening.;COPYRIGHT: (C)2009,JPO&INPIT