Linear friction welding process for making wheel rims

Details Linear friction welding process for making wheel rims Linear friction welding process for making wheel rims

B - Operations, Transporting

21

D

B21D 53/30 (2006.01) B23K 20/12 (2006.01) B21H 1/10 (2006.01)

Patent

CA 2262784

A method of forming vehicle wheel rims includes utilizing linear friction welding. A generally planar piece of metal material (20) is placed into a coil position with two ends (22, 24) in abutment. The abutting ends are oscillated or moved, in a generally linear pattern (32), relative to each other to increase the temperature of the metal at each end. After the temperature has been increased sufficiently, without reaching the melting temperature of the metal, the linear motion is stopped. The ends are then aligned precisely and forced together with an increased axial load (34). After cooling, the two ends are permanently joined together with an essentially defect-free welded joint.

Un procédé de formage de jantes de roues pour véhicules consiste à utiliser le soudage par friction linéaire. On donne à une pièce sensiblement plane en matériau métallique (20) une forme enroulée avec deux extrémités (22, 24) en aboutement. Les extrémités en aboutement sont oscillées ou déplacées l'une par rapport à l'autre, de manière sensiblement linéaire (32), afin d'augmenter la température du métal à chaque extrémité. Une fois que l'on a augmenté suffisamment la température, sans atteindre la température de fusion du métal, on stoppe le mouvement linéaire. On aligne les extrémités avec précision et on les force à s'unir sous l'effet d'une charge axiale accrue (34). Après refroidisssement, on unit les deux extrémités de façon permanente avec un joint soudé sensiblement sans défaut.

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