Influence des conditions de tréfilage sur la texture cristallographique et sur les propriétés mécaniques des fils fins : application au steelcord

Abstract : The steelcord is a steel wire drawn until 0,2 mm which is used in the tire manufacturing. In this study the cristallographic texture evolution is determined across the wire diameter by X ray diffraction. This determination needs intensity corrections due to X ray absorption and irradiated volume variations occuring during the movement of the sample. Thr corrections are computed for a set of adjoining wires and are usable for any sample having this geometry. The texture determination of steelcord with the use of these corrections show two kinds of fiber texture in the wire : one is "classical", the other is "circular" or "cyclic". A texture index Ti is defined to describe the texture evolution across the diameter. This index gives the texture sharpness of the wire with respect to an isotropic one. The study of the texture index evolution according to the drawing process conditions is done. This can had to undertake new improvements of the process and to envisage the possibility of an increasing of the wire drawability
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Tony Montesin. Influence des conditions de tréfilage sur la texture cristallographique et sur les propriétés mécaniques des fils fins : application au steelcord. Autre. Université Paul Verlaine - Metz, 1991. Français. ⟨NNT : 1991METZ022S⟩. ⟨tel-01775946⟩

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