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US 9,884,356 B2Granted
Wire drawing method
AssigneeCompagnie Generale Des Establissements Michelin
InventorsArnaud Verleene, Sébastien Noel
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Abstract
A process for drawing a steel wire, in which the wire has a carbon content by weight C of 0.4%≦C≦0.74%, includes an uninterrupted series of drawing steps. The drawing steps draw the wire from a diameter d′ to a diameter d, with d′ and d being expressed in mm, and with a true strain ε′ of the steel wire being given by ε′=2×ln(d′/d), with ε′>4.
Claims22
A process for drawing a steel wire, the process comprising steps of:
- providing a steel wire having a carbon content by weight C of 0.4%≦C<0.5%;
- preliminarily drawing the steel wire in an uninterrupted series of preliminary drawing procedures to draw the steel wire from a diameter D to a diameter d′;
- and
- drawing the steel wire in an uninterrupted series of drawing procedures, such that the steel wire is drawn from the diameter d′ to a diameter d,
- wherein D is the diameter of the steel wire immediately before a first preliminary drawing procedure of the uninterrupted series of preliminary drawing procedures,
- wherein d′ is the diameter of the steel wire immediately after a last preliminary drawing procedure of the uninterrupted series of preliminary drawing procedures and immediately before a first drawing procedure of the uninterrupted series of drawing procedures,
- wherein d is the diameter of the steel wire immediately after a last drawing procedure of the uninterrupted series of drawing procedures,
- wherein D, d′, and d are expressed in mm,
- wherein a true strain ε′ of the steel wire is given by ε′=2×ln(d′/d), with ε′>4, and
- wherein a total true strain εT of the steel wire is given by εT=2×ln(D/d), with εT≧6.75.
7 more elements
Dependencies are inferred from the claim text.