PROCESS AND INSTALLATION FOR MAKING RAILWAY FROGS AND FROG POINTS, AS WELL AS PROCESSES FOR MAKING PERMANENT JOINTS BETWEEN A FROG OR ITS POINT AND A RAILWAY

The invention relates to a process and an installation for making a railway frog and frog point, as well as to a process for joining a frog or point with a railway. According to the invention, the process consists in moulding frogs or frog points in some horizontally arranged moulding boxes, using a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SOARE NICOLAE, LANDE VICTOR SPIRIDON, BR ILOIU MIRCEA
Format:	Patent
Sprache:	eng ; rum
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES FIXED CONSTRUCTIONS FOUNDRY MOULDING MACHINES FOR MAKING RAILWAYS OF ALL KINDS PERFORMING OPERATIONS PERMANENT WAY PERMANENT-WAY TOOLS POWDER METALLURGY TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a process and an installation for making a railway frog and frog point, as well as to a process for joining a frog or point with a railway. According to the invention, the process consists in moulding frogs or frog points in some horizontally arranged moulding boxes, using a moulding sand in a furane resin : sand ratio of 2.1...3.4% and a curing agent : resin ratio of 30...32%, the operation of mixing the sand with the curing agent lasting for 50...70 s and the mixing thereof with furane resin for 115...125 s., the mixture having a permeability of at least 500 units and a compression resistance of 10x 13 kg/m, with a steel composition of 0.95...1.3% C, 11.5...14% Mn, Si