Process for producing a component part of a railway switch or a railway crossing and component part of railway switches or railway crossings produced by such process

US4144442A · kind A · utility

Assignee

• Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesellschaft · AT

Inventors

• Hubert Augustin · Geldern, DE
• Eduard Friesenbichler · Zeltweg, AT
• Alfred Moser · Leoben, AT

Key dates

• Filing date: May 23, 1977
• Grant date: Mar 13, 1979
• Expiry date: May 23, 1997

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E01B7/02
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

Process for producing a component part of a railway switch or of a railway crossing in which frogs consisting of austenitic manganese steel casting are, with interposition of an intermediate piece, connected by a welding operation with rails consisting of carbon steel, characterized in that an intermediate piece is welded to the portions of the frog or of the component part of the railway crossing which are to be connected with the rails, and in that this intermediate piece consists of austenitic steel, whereupon the frog or the component part of the railway crossing is, together with the intermediate piece, heated to a temperature, preferably to about 1050.degree. C., at which any embrittlement of the workpiece is removed, and whereupon the frog or the component part of the crossing having the intermediate piece welded thereto is rapidly cooled, for instance by quenching with water, and whereupon the rail is welded to the intermediate piece and subsequently the welding area is allowed to slowly cool, the intermediate piece having a smaller height than has the rail and the frog or the component part of the railway crossing, and further characterized in that prior to heating the fro…