Frog, in particular frog point, for rail crossing or rail switches as well as process for producing same
AssigneeVoest-Alpine Aktiengesellschaft
InventorsHubert Augustin, Robert Pirker
Life of this patent
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Abstract
In a steel frog for rail crossings and rail switches, the frog point or, respectively, the surface of the frog being travelled upon by the wheels consists of an age-hardening steel having the composition ______________________________________ C 0.01 to 0.05% Ti 0.1 to 1% Si 0.01 to 0.2% Cr 0 to 13% Mn 0.01 to 0.2% Al 0 to 0.2% Co 0 to 15% B 0 to 0.1% Mo 1.5 to 6% Zr 0 to 0.1% Ni 7 to 20% ______________________________________ The frog is manufactured such that the surface being travelled upon by the wheels is applied by build-up welding onto a base body consisting of nominal rail steel.
Claims3
A frog for rail crossings or rail switches wherein said frog having a surface, for wheels to travel upon, characterized in that the frog or the surface of the frog is made of an age-hardened steel consisting essentially of
- ______________________________________ C 0.01 to 0.05% Ti 0.1 to 1% Si 0.01 to 0.2% Cr 0 to 13% Mn 0.01 to 0.2% Al 0 to 0.2% Co 0 to 15% B 0 to 0.1% Mo 1.5 to 6% Zr 0 to 0.1% Ni 7 to 20% ______________________________________
- and the balance of iron.
Dependencies are inferred from the claim text.