B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
153/11
B21D 1/00 (2006.01) B21D 3/00 (2006.01) B21D 13/04 (2006.01)
Patent
CA 1144053
ABSTRACT OF THE DISCLOSURE Starting sheets are straightened and stiffened in electro- lytic refining plants by shaping the same predetermined areas of the starting sheet surfaces once or several times during successive shaping stages in such a manner that the elasticity range of the starting sheet material is at least in part exceeded. During each shaping stage depressions or grooves deviating from the plane of the starting sheet surface are produced in the starting sheets by shaping the said same areas of the starting sheet surface alternately from the opposite sides of the starting sheet during the different shaping stages, whereby the alternate shaping of the areas of the starting sheet surfaces from the opposite sides of the starting sheet straightens the starting sheet and causes work-hardening in the material of the starting sheet, and the depressions or grooves deviating from the plane of the starting sheet surface cause a stiffening of the starting sheet. The apparatus being used for straightening and stiffening starting sheets in electrolytic refining plants, comprises a frame; at least two roller pairs consisting of two superimposed rollers, the roller pairs being situated at a distance from each other and being attached by means of bearings to the frame of the apparatus, the surface of the said rollers being provided with the desired profile or patterns which is shaped in the starting sheets; and drive means for producing the rotational motion of the rollers.
375442
Heinonen Seppo
Sulasaari Jukka
Fetherstonhaugh & Co.
Outokumpu Oy
LandOfFree
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