RAIL BULL JOINT WELDING METHOD

FIELD: mechanical engineering; welding of rails. ^ SUBSTANCE: cross cut along vertical plane from head of rail to beginning of rail foot is made on edges of rails 1 and 2 or on edge of one of rails. Horizontal cut is made along end face surface of rails or rail square to previously made cut, and cha...

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Bibliographische Detailangaben
Hauptverfasser:	KUMINOV EVGENIJ SEMENOVICH, PUREKHOV ANDREJ NIKOLAEVICH, VOROB'EV GENNADIJ GRIGOR'EVICH, BERZIN MIKHAIL MIKHAJLOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING FIXED CONSTRUCTIONS MACHINE TOOLS MACHINES FOR MAKING RAILWAYS OF ALL KINDS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PERMANENT WAY PERMANENT-WAY TOOLS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	FIELD: mechanical engineering; welding of rails. ^ SUBSTANCE: cross cut along vertical plane from head of rail to beginning of rail foot is made on edges of rails 1 and 2 or on edge of one of rails. Horizontal cut is made along end face surface of rails or rail square to previously made cut, and chamber at angle of 45° is made on end face surface of foot to form root face 3 at base of foot. Rails are installed at require technological clearance 4. Welding wire is fitted into clearance together with insulated end tip of electrode holder of semiautomatic welder. Electric arc welding is carried out continuously over entire height of rail with use of side forming crystallizers-straps in zone of welding out welding current providing formation of liquid bath over entire space of technological clearance. Liquid bath in root of weld is obtained owing to melting of edges of rail main metal. ^ EFFECT: improved mechanical properties of weld and increased welding rate, facilitated welding. ^ 2 dwg