RAIL WHOSE INTERNAL HAS HIGH HARDNESS

PROBLEM TO BE SOLVED: To provide a rail which has a hardness of ≥370 HB at a point to the inside of 20 mm from the surface of the head, and in which the formation of the metallic structure of micro martensite at the inside of the boundary region between the head and a columnar part is suppressed, an...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YAMAMOTO TAKESHI, TOTTORI HIDEO, UEDA MASAHARU, SONOYAMA KYOHEI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES FERROUS OR NON-FERROUS ALLOYS FIXED CONSTRUCTIONS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINES FOR MAKING RAILWAYS OF ALL KINDS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERMANENT WAY PERMANENT-WAY TOOLS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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