公开(公告)号：US4245490A

公开(公告)日：1981-01-20

申请号：US018764

申请日：1979-03-08

申请人： Ichiro Kokubo ,  Seiji Ban ,  Kensaburo Takisawa ,  Yuuji Koyama ,  Junkiti Kobayashi ,  Chosei Ueda

发明人： Ichiro Kokubo ,  Seiji Ban ,  Kensaburo Takisawa ,  Yuuji Koyama ,  Junkiti Kobayashi ,  Chosei Ueda

IPC分类号： B21B1/26 ,  B21B1/28 ,  B21B27/02 ,  B21B1/00 ,  B21B1/22

CPC分类号： B21B1/28 ,  B21B1/26 ,  B21B2263/02 ,  B21B27/02 ,  Y10T428/12389

摘要： A thin rolled steel plate, and method and apparatus for producing it is disclosed. The thin rolled steel plate is formed with a drum shape in cross-section with a thickness ratio of a central portion to the edge portions of at least 1.1. The rolled steel plate is rolled having a concave drum shape during the rough rolling step and/or the first half of the hot finishing rolling step so as to achieve the desired drum shape. The plate is subsequently rolled in the second half of the hot finishing rolling step and the cold finishing rolling step by concave drum shaped rollers which reduce its thickness while not altering its drum shape.

摘要翻译： 公开了一种薄轧钢板及其制造方法和装置。 薄轧钢板的中心部分与边缘部分的厚度比至少为1.1的横截面形成鼓形。 轧制钢板在粗轧工序和/或热精轧工序的前半部分中具有凹鼓形状，以达到期望的鼓形状。 随后在热精轧步骤的后半段和冷轧精轧步骤中将板轧制，其中凹滚筒形辊在减小其厚度的同时不改变其滚筒形状。