A method of weld repairing or cladding a steel bloom , rail or other part of a railway

摘要

A method of weld repairing or cladding a steel bloom, rail or other railway part, wherein the bloom, tall or railway part is pre-heated before repair welding or cladding, the temperature of the pre-heat being such that the heat affected zone (HAZ) of the bloom, rail or railway part after laying of the first weld bead comprises at least 10% austenite immediately prior to the laying of the second weld bead.