Hardening of flexible trailing arms

Details Hardening of flexible trailing arms Hardening of flexible trailing arms

C - Chemistry, Metallurgy

21

D

C21D 1/20 (2006.01) B60G 7/00 (2006.01) B60G 9/00 (2006.01) C21D 1/46 (2006.01) C21D 9/00 (2006.01)

Patent

CA 2744412

The invention relates to a method for manufacturing of a flexible trailing arm for a wheel axle suspension of a vehicle such as a lorry or a trailer. In the method a steel blank is heated. Next, the blank is formed into the desired shape of the trailing arm by means of a suitable forming process. Following that the trailing arm is austempered by cooling it in a warm fluid medium.

L'invention concerne un procédé de fabrication d'un bras flexible d'essieu arrière pour suspension d'essieu de roue d'un véhicule tel qu'un camion ou une remorque. Dans le procédé, on chauffe une ébauche en acier. Ensuite, l'ébauche est façonnée en la forme souhaitée du bras d'essieu arrière au moyen d'une opération appropriée de façonnage. Ensuite, le bras d'essieu arrière subit une trempe bainitique étagée en étant refroidi dans un milieu fluide chaud.

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