Thin rolled steel plate having unequal thickness

Details Thin rolled steel plate having unequal thickness Thin rolled steel plate having unequal thickness

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.

REFERENCES:
patent: 1688252 (1928-10-01), Tytus
patent: 1829339 (1931-10-01), Corrigan et al.
patent: 1895607 (1933-01-01), Coe
patent: 2732591 (1956-01-01), Whittum
patent: 3021737 (1962-02-01), Titze
patent: 3049950 (1962-08-01), Pearson
patent: 3172315 (1965-03-01), Fox
patent: 3882709 (1975-05-01), Kawamoto et al.
patent: 4033165 (1977-07-01), Arimura et al.

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