METHOD OF MANUFACTURING BIMETALLICAL STEEL AND ALUMINIUM CONTACT RAILS Russian patent published in 2017 - IPC B23K20/08 B23K101/26 

FIELD: construction.

SUBSTANCE: plurality of rail bearing profiles of aluminium or an alloy thereof is manufactured with corresponding face surfaces of their heads. The profiles are laid parallel to each other on a horizontal platform with their faces oriented upwards, so that there is a gap between the heads of any two adjacent rail bearing profiles of said plurality. After that, a single steel sheet is installed over the faces of the plurality of the rail bearing profiles laid in this way, with an offset from these surfaces. An explosive is applied to this sheet on top over its entire area, and the explosive initiation is carried out, which determines the process of welding by blasting of steel contact pads against the faces of the heads of the rail bearing profiles.

EFFECT: simplifiying the manufacture technology of contact rails due to the simultaneous formation of a plurality of bimetallic rails by means of welding a single steel sheet to the plurality of the bearing profiles and cutting this steel sheet into parts along the perimeters of the heads of these profiles.

3 dwg