METHOD OF HARDENING OF FROG CORE WORKING SURFACES AND DEVICE FOR ITS EMBODIMENT

plastic metal working by blasting of explosives; applicable in hardening of working roll surfaces of frog cores. SUBSTANCE: method includes successive laying onto frog core roll surface to be hardened of profiles spacers of inert material and sheet U-shaped explosive charges with height of side memb...

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Bibliographische Detailangaben
Hauptverfasser:	DORONIN G.S, KANAEV V.D, BORISOV V.E, LARKIN A.V, JASHIN V.B, AVENJAN V.A
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES 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
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Beschreibung
Zusammenfassung:	plastic metal working by blasting of explosives; applicable in hardening of working roll surfaces of frog cores. SUBSTANCE: method includes successive laying onto frog core roll surface to be hardened of profiles spacers of inert material and sheet U-shaped explosive charges with height of side members of 18-22 mm with initiating units located on bent ends of charges. Core is installed on metal support with length equal to one third of charges length. In this case, core center of gravity is made coincident with support center. Hardening is effected by detonation wave whose front surface is positioned to hardened core working surface at angle of 50-70 deg. EFFECT: reduced input in hardening of core working surfaces and higher quality of hardening. 2 cl, 5 dwg, 1 ex