Metal deforming – By use of roller or roller-like tool-element – Plural roller-couples
Patent
1979-03-08
1981-01-20
Mehr, Milton S.
Metal deforming
By use of roller or roller-like tool-element
Plural roller-couples
72366, 428600, B21B 100, B21B 122
Patent
active
042454905
ABSTRACT:
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.
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patent: 1895607 (1933-01-01), Coe
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patent: 3882709 (1975-05-01), Kawamoto et al.
patent: 4033165 (1977-07-01), Arimura et al.
Ban Seiji
Kobayashi Junkiti
Kokubo Ichiro
Koyama Yuuji
Takisawa Kensaburo
Kobe Steel Limited
Mehr Milton S.
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