Dual alloy railroad wheel

B - Operations – Transporting – 60 – B

Patent

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Details

B60B 17/00 (2006.01)

Patent

CA 2306248

A railroad wheel formed from at least two metallic alloys. In one embodiment, a railroad wheel has a body formed from a first alloy and a rim formed from a second alloy initially in powder form. In an exemplary embodiment, to form the dual alloy wheel the body of the wheel is cast with a circumferential channel formed therein. The perimeter of the body is enveloped with a material, such as sheet metal, to form a cavity defined by the channel and the sheet metal. The second alloy in the form of a powder is placed in the cavity and subjected to heat and pressure to metallurgically weld the first and second alloys and form a composite railroad wheel.

La présente invention concerne une roue de véhicule ferroviaire constituée d'au moins deux alliages métalliques. Selon un mode de réalisation, une roue de véhicule ferroviaire comprend un corps constitué d'un premier alliage et un bord constitué d'un second alliage initialement sous forme de poudre. Selon un mode de réalisation type, pour former la roue à double alliage, le corps de la roue est coulé par l'intermédiaire d'un canal circulaire formé dans ledit corps. La périphérie du corps est enveloppée d'une matière, telle qu'une tôle, de façon à former une cavité définie par le canal et ladite tôle. Le second alliage sous forme de poudre est placé dans la cavité et soumis à la chaleur et à la pression de manière à souder métallurgiquement le premier et le second alliages et former une roue de matériel ferroviaire composite.

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