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AssigneesCompagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.
InventorsArnaud VERLEENE, Laurent BUCHER, Olivier GIROUX
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The steel wire having a completely ferritic, pearlitic or ferritic-pearlitic microstructure has a weight content of carbon C such that 0.05% C<0.4% and a weight content of chromium Cr such that Cr<12%. The process for drawing the wire comprises: at least one first uninterrupted series of steps (4001-400m) of drawing the wire from a diameter D to a diameter d′, at least one second uninterrupted series of steps (7001-700m) of drawing the wire of diameter d′ to a diameter d, one or more intermediate steps between the first and second uninterrupted series of steps (4001-400m, 7001-700m) of drawing the wire, the wire having a temperature less than or equal to 300° C. during the or each intermediate step.
A process for drawing a steel wire having a completely ferritic, pearlitic or ferritic-pearlitic microstructure, wherein the wire has a weight content of carbon C such that 0.05%≦C<0.4% and a weight content of chromium Cr such that Cr<12%, the process comprising:
A steel wire of diameter d expressed in mm and having a completely ferritic, pearlitic or ferritic-pearlitic microstructure, wherein the wire has a weight content of carbon C such that 0.05%≦C<0.4%, a weight content of chromium Cr such that Cr<12% and a maximum tensile strength R, expressed in MPa, such that R≧A+910.C−600.In(d) with A=875.
Dependencies are inferred from the claim text.