Process for producing frogs of railway switches

Details Process for producing frogs of railway switches Process for producing frogs of railway switches

C - Chemistry, Metallurgy

21

D

148/49.5

C21D 9/04 (2006.01) B23K 15/00 (2006.01) B23K 20/08 (2006.01)

Patent

CA 1313610

A b s t r a c t In a process for producing frogs of railway switches or rail pieces located in the area of switches which is hit by the wheels comprising a highly wear-resistent surface layer, which is travelled upon by the wheels, of an age-hardening steel of the composition C 0.01 to 0.05 % Al 0 to 0.2 % Si 0.01 to 0.2 % B 0 to 0.1 % Mn 0.01 to 0.2 % Zr 0 to 0.1 %, Co 0 to 15 % Mo 1.5 to 6 % Ni 7 to 20 % Ti 0.1 to 1 % Cr 0 to 13 % the surface layer to be travelled upon by the wheels is applied by explosion plating or electron beam welding or roll plating onto a base body of a well weldable steel, in particular a steel comprising not more than 0.24 % C, not more than 0.04 % P and S, respectively, not more than 0.65 % Si and not more than 1.7 % Mn.

548950

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