B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 53/02 (2006.01) B29C 53/08 (2006.01) B29C 53/84 (2006.01) B29C 57/00 (2006.01) B29C 57/02 (2006.01) B29C 57/04 (2006.01) B29C 57/06 (2006.01) F16L 47/06 (2006.01)
Patent
CA 2600204
A method of modifying compressive strains in formation of a pipe ring groove (16), in which a differential temperature profile is established across the pipe wall in a narrow bending locus (I 3) corresponding to the ring groove position, and the material is bent to form the ring groove. The temperature differential creates a differential in elastic modulus between the inner and outer surfaces of the pipe material, modifying the strain induced in inner concave and outer convex surfaces of the ring groove during the bending step.
L~invention concerne une méthode permettant de modifier sous sollicitation de compression la forme d~un tuyau à gorge de segment (16). Un profil de température différentielle est établi en travers d~une paroi de tuyau en un lieu courbe étroit (I 3) correspondant à la gorge de segment dont le matériau est formé courbe. Le différentiel de température crée un module d~élasticité différentiel entre la surface intérieure et la surface extérieure d~un tuyautage, modifiant la sollicitation induite aux surfaces intérieures concaves et extérieures convexes de ladite gorge de segment pendant l~étape de roulage des bords.
Chapman Peter Glanville
Gotham Joshua Stanley
Macovaz George
Cassan Maclean
Vinidex Pty Limited
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