Method for producing metal sheet with raised lines, metal sheet with raised lines, and structural component

A method for producing a metal sheet by use of a rolling mill including at least two roll stands, the metal sheet including, on an upper surface or a lower surface, one or more raised lines extending in a rolling direction, the method comprising:

• a preparing step of preparing a grooved roll, the grooved roll including, in an outer peripheral surface, one or more grooves extending in a circumferential direction;
• a choosing step of choosing a roll stand at least one stage before a last roll stand, from the roll stands;
• an incorporating step of incorporating the grooved roll in the rolling mill as an upper roll or a lower roll of the chosen, specified roll stand;
• and
• a forming step of rolling a workpiece by the rolling mill incorporating the grooved roll, thereby forming the workpiece into a metal sheet with raised lines formed corresponding to the respective grooves of the grooved roll, wherein
• in the forming step, until a leading edge of the workpiece reaches a roll stand next to the specified roll stand, a maximum rolling reduction achieved by rolls of the specified roll stand is set to a provisional value that is less than a required value, and after the leading edge of the workpiece reaches the roll stand next to the specified roll stand, the maximum rolling reduction achieved by the rolls of the specified roll stand is changed to the required value;
• the roll stand next to the specified roll stand being a non-rolling performing roll stand for conveyance.