Mould For Aluminothermic Welding Of Rails

Abstract: The invention relates to a mould (1) for aluminothermic welding of two rails (30), said mould (1) comprising at least two side parts (2A, 2B) made of refractory material, configured to be mounted temporarily opposite one another on either side of the ends of the rails (30) to be welded so as to define a moulding cavity between said rail ends (30), each side part (2A, 2B) comprising at least one filling pipe (10A, 10B) configured to guide molten metal from the upper portion of the mould to a zone of the moulding cavity located at the base (33) of a rail, characterised in that each filling pipe (10A, 10B) has a section (110, 120) which is perpendicular to a flow axis of the molten metal in the pipe (10A, 10B) and narrows so as to progressively reduce the width of said section (110, 120) in a direction opposite a mean longitudinal plane (P) common to the two rails to be welded.

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