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Verfahren zur Aenderung der Gefuegestruktur von Metallschienen

Process for the modification of the grain structure of metal rails
 
: Kuepper, F.; Wissenbach, K.; Schmedders, H.

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Frontpage ()

DE 1992-4231957 A: 19920924
DE 1992-4231957 A: 19920924
DE 4231957 C1: 19930805
C21D0009
German
Patent, Electronic Publication
Fraunhofer ILT ()

Abstract
The invention relates to a process for the modification of the local grain structure on the surface of a metal rail head in the solid phase. The modification in the grain structure takes place by applying energy only in a restricted local edge layer directly under the loaded contact and wear surfaces through radiation with high energy. As a result of this high energy radiation, the energy volume absorbed by the rail at the processing location is controlled in such a way that a precisely controlled cooling of the local grain structure is achieved in the edge layer at the point of processing.

: http://publica.fraunhofer.de/documents/PX-38995.html