Process for the heat treatment of steel
AssigneeFried. Krupp Huttenwerke AG
InventorWilhelm Heller
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Abstract
A process for the heat treatment of a steel rail which is at a temperature which is in the austenite range which comprises quenching at least the head portion of said rail in water maintained at a temperature of at least 80.degree. C until the temperature of said rail is such that said rail has completed the pearlite transformation and recovering a rail whose steel composition is characterized by such a fine pearlitic structure that it cannot be resolved by a light microscope but is not bainitic in structure.
Claims15
A process for the heat treatment of a steel rail which is at a temperature which is in the austenite range, which process consists essentially of quenching at least the head portion of said rail in boiling water, maintaining the rail in said water until it reaches a temperature of 100.degree. C and recovering a rail whose steel composition is characterized by such a very fine pearlitic structure that it cannot be resolved by a light microscope but is not bainitic in structure.
Dependencies are inferred from the claim text.