Edge hardening of chain saw guide bars

Details Edge hardening of chain saw guide bars Edge hardening of chain saw guide bars

C - Chemistry, Metallurgy

21

D

C21D 9/24 (2006.01) B27B 17/02 (2006.01) C21D 1/10 (2006.01) C21D 9/00 (2006.01)

Patent

CA 2239214

Chain saw guide bar with hardened edge surfaces, and method for edge hardening of guide bars, where induction hardening followed by quenching with a cooling medium produces a hardened layer on edge surfaces (12) and chain groove sides (13), but where side surfaces (11) remain unhardened by being protected from the cooling medium.

La présente invention concerne une barre de guidage de scie à chaîne dont les surfaces marginales sont durcies, et un procédé de durcissage de barres de guidage. Le procédé consiste en un durcissage par induction suivi d'une trempe dans un milieu de refroidissement. Ce procédé permet de produire une couche durcie sur les surfaces marginales (12) et sur les côtés de la glissière de chaîne (13), les surfaces latérales (11) ne subissant aucun durcissage car elles sont protégées du milieu de refroidissement.

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