Intermediate piece for connecting molded articles of...

C - Chemistry – Metallurgy – 21 – D

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C21D 9/04 (2006.01) C21D 9/50 (2006.01) C22C 38/44 (2006.01)

Patent

CA 2700100

In an intermediate piece for connecting molded articles of manganese steel with carbon steel, in particular austenitic manganese steel casting frogs with standard rails, the intermediate piece is comprised of steel from the group of austenitic-ferritic duplex steels having a ferrite portion of < 60 wt%. The method for connecting austenitic manganese steel castings with standard rails is characterized in that an austenitic-ferritic intermediate piece made of duplex steel comprising < 60% ferrite is welded with the manganese steel casting and the standard rail.

Cette pièce intermédiaire pour assembler des corps façonnés en acier au manganèse avec de l'acier au carbone, notamment des coers de croisement moulés en acier austénitique au manganèse avec des rails standard, est réalisée en acier du groupe des aciers duplex austéno-ferritiques avec une part de ferrite inférieure à 60% en poids. Le procédé pour assembler des pièces moulées en acier austénitique au manganèse avec des rails standard est caractérisé par le fait qu'une pièce intermédiaire austéno-ferritique, constituée d'un acier duplex avec une part de ferrite inférieure à 60% en poids, est soudée à la pièce moulée en acier au manganèse et au rail standard.

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