MANUFACTURE OF METALLIC STRIP

摘要

PURPOSE:To prevent lowering of strength and occurrence of loss of material due to cutting by forming a V-shaped plateau part on the rolling surface of a rolling roll and extending repeatedly the upward slope of a basin part to the direction of width by the downward slope of the plateau part. CONSTITUTION:When the rolling roll 6 and a flat roll 11 start rolling, the rear end 16b side rolls slowly on a metallic plate 1 from the front end 16a side. The metallic plate 1 is extended slowly along a roll axis by the slope 7a of the V- shaped plateau part 7, and forms wide thin parts 3 on both sides of a remaining thick part. The rolling roll 6 and flat roll 11 are reversed and returned to original condition. Then, the state of inserting and holding between the roll 6 and 11 is released. A clamping machine operates and chucks the metallic plate 1 and pushes out by fixed amount and rolling is performed again by the rolling roll. The unextended part of the metallic plate 1 is extended in the direction of the width by rolling with the slope 7a. Thus, the surface rolled by the rolling roll is shifted by a fixed amount at each cycle and the metallic plate having the desired width is manufactured.