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1. (WO2016056234) METHOD FOR PRODUCING METAL PLATE WITH PROTRUDING RIDGE, METAL PLATE WITH PROTRUDING RIDGE, AND STRUCTURAL COMPONENT

Pub. No.:    WO/2016/056234    International Application No.:    PCT/JP2015/005092
Publication Date: Fri Apr 15 01:59:59 CEST 2016 International Filing Date: Thu Oct 08 01:59:59 CEST 2015
IPC: B21B 1/08
B21B 27/02
B21D 53/88
B21H 8/00
Applicants: NIPPON STEEL & SUMITOMO METAL CORPORATION
新日鐵住金株式会社
Inventors: NIKAIDO, Hitoshi
二階堂 仁之
YONEBAYASHI, Toru
米林 亮
SATO, Koichi
佐藤 浩一
ITO, Teruo
伊東 照雄
KAMADA, Daiki
鎌田 大毅
Title: METHOD FOR PRODUCING METAL PLATE WITH PROTRUDING RIDGE, METAL PLATE WITH PROTRUDING RIDGE, AND STRUCTURAL COMPONENT
Abstract:
In this method for producing a metal plate with a protruding ridge, a metal plate having a plurality of protruding ridges formed along a rolling direction on a top surface is produced using a rolling mill that is provided with a plurality of roll stands. Said production method includes a preparation step, a selection step, an incorporation step, and a molding step. In the preparation step, a roll with grooves, said roll being provided with a plurality of grooves on the outer peripheral surface, is prepared. In the selection step, a stand from at least one stage before the last stand is selected. In the incorporation step, the roll with grooves is incorporated as an upper roll of a specified stand which has been selected. In the molding step, a material to be rolled is rolled using the rolling mill, and a metal plate in which protruding ridges are formed so as to correspond to the grooves of the roll with grooves is molded. Therein, in the molding step, until the tip of the material to be rolled reaches the stand subsequent to the specified stand, the maximum rolling reduction rate of the roll of the specified stand is set to a provisional value that is lower than a required value. After the tip of the material to be rolled reaches the stand subsequent to the specified stand, the maximum rolling reduction rate of the roll of the specified stand is changed to the required value.