Search International and National Patent Collections
|1. (WO2016056234) METHOD FOR PRODUCING METAL PLATE WITH PROTRUDING RIDGE, METAL PLATE WITH PROTRUDING RIDGE, AND STRUCTURAL COMPONENT|
|Applicants:||NIPPON STEEL & SUMITOMO METAL CORPORATION
|Title:||METHOD FOR PRODUCING METAL PLATE WITH PROTRUDING RIDGE, METAL PLATE WITH PROTRUDING RIDGE, AND STRUCTURAL COMPONENT|
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.