POST-HEAT-TREATMENT DEVICE

PROBLEM TO BE SOLVED: To provide a post-heat-treatment device that can effectively reduce the residual stress in a welded part of a rail and that can suppress the increase of the residual stress in a lengthwise direction.SOLUTION: Provided is a post-heat-treatment device 10 for a welded rail X, whic...

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Bibliographische Detailangaben
Hauptverfasser:	KARIMINE KENICHI, UEDA MASAHARU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING FIXED CONSTRUCTIONS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MACHINES FOR MAKING RAILWAYS OF ALL KINDS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PERMANENT WAY PERMANENT-WAY TOOLS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a post-heat-treatment device that can effectively reduce the residual stress in a welded part of a rail and that can suppress the increase of the residual stress in a lengthwise direction.SOLUTION: Provided is a post-heat-treatment device 10 for a welded rail X, which is placed 20 mm or more and 300 mm or less away in a lengthwise direction from a weld center X2 of the rail X, and is provided with an induction heating coils 11a to 11d to heat the whole periphery of the rail X. Preferably the number of turns of the induction heating coils 11a to 11d is 2 turns or more, or the number of placement locations of the induction heating coils 11a to 11d on one side of the weld center X2 is 2 locations or more. Preferably the induction heating coils 11a to 11d have a shape covering the whole periphery of the rail X.