B - Operations – Transporting – 21 – C
Patent
B - Operations, Transporting
21
C
B21C 37/20 (2006.01)
Patent
CA 2186388
In the present method of producing a metal hollow body (1) having a cylindrical casing which is provided on the exterior with at least one predetermined breaking line (32, 51), the casing is formed by a drawing process and the predetermined breaking line (32, 51) is produced continuously by working without cutting, in particular by rolling in, on the outer surface of the casing, after or during the drawing process.
L'invention concerne un procédé de production d'un corps creux métallique (1) pourvu d'une enveloppe cylindrique dont la face extérieure comporte au moins une ligne de rupture théorique (32, 51). L'enveloppe cylindrique est obtenue par étirage et la ligne de rupture théorique (32, 51) est produite en continu par façonnage sans enlèvement de copeaux, notamment par mandrinage, sur la face extérieure de l'enveloppe, avant ou pendant ce processus d'étirage.
Butty Jean-Francois
Shapiro Cohen
LandOfFree
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