B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
B23P 15/26 (2006.01) B21D 53/06 (2006.01) B23P 9/00 (2006.01) B23P 17/00 (2006.01)
Patent
CA 2566792
An improved tool (10) and method for enhancing the surface of a heat transfer tube (62) are provided. The tool (10), which can be easily added to existing manufacturing equipment, includes cutting bits (28) that may be retracted with a housing (12). The cutting bits (28) include a cutting edge (32) to cut through the surface of a tube (62) and a lifting edge (34) to lift the surface of the tube (62) to form protrusions. A method for enhancing the inner surface of the tube includes mounting a tool (10) on a shaft (14), positioning the tool (10) in the tube (62) and causing relative rotation and axial movement between the tube (62) and the tool (10) to cut at least partially through at least one ridge formed along the surface of the tube to form ridge layers and lift the ridge layers to form protrusions.
L'invention porte sur un outil amélioré, et sur un procédé d'accroissement de la surface d'un tube de transfert de chaleur. L'outil, qui peut facilement s'ajouter à un équipement d'usinage existant comporte des plaquettes de coupe rétractables dans un logement et présentant une arrête de coupe rainurant la surface du tube, et une arrête de levage soulevant la surface du tube pour former des protubérances. Le procédé d'accroissement de la surface intérieure d'un tube comporte les étapes suivantes: montage d'un outil sur un arbre; positionnement de l'outil dans le tube; déplacement relatif en rotation et axial du tube et de l'outil pour rainurer au moins partiellement l'une des crêtes formées le long de la surface du tube pour former des couches de crêtes, et soulever les couches de Crète pour former des protubérances.
Kouse Bruce
Minshall Gerry
Thors Petur
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Kouse Bruce
Minshall Gerry
Thors Petur
Wolverine Tube Inc.
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