HIGH-STRENGTH STEEL WIRE

The present invention provides a high strength drawn steel wire having a predetermined chemical composition, in which, in a cross section which includes the central axis of the drawn steel wire and which is in parallel with the central axis, the area ratio of a pearlite structure in the interior of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MATSUI, Naoki, OKONOGI, Makoto
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The present invention provides a high strength drawn steel wire having a predetermined chemical composition, in which, in a cross section which includes the central axis of the drawn steel wire and which is in parallel with the central axis, the area ratio of a pearlite structure in the interior of the drawn steel wire is 90% or more, and the area ratio of the pearlite structure in a surface layer portion of the drawn steel wire is 80% or more; in which, in the entire structure of the drawn steel wire, the area ratio of a lamellar pearlite structure in which cementite has an average length of 1.0 µm or more is from 30% to 65%, and the area ratio of a fragmented pearlite structure in which cementite has an average length of 0.30 µm or less is from 20% to 50%; and in which the drawn steel wire has a tensile strength of 1,960 MPa or more.