摘要 |
PURPOSE: To provide a high carbon steel wire rod to be descaled, excellent in wire drawability. CONSTITUTION: In the steel wire rod prepared by hot rolling and having >=0.6wt.% C content, the true stress-true strain curve in the tensile test is characterized by having 800-1200MPa maximum deformation stress, >=20% total elongation, and >=0.5 yield ratioσ0.2 /σu.t.s. (whereσ0.2 is 0.2% proof stress andσu.t.s. is maximum deformation stress). Further, the proportion of Fe3 O4 composition comprising in the scale of the wire rod is regulated to <30%. By this method, descaling property can be improved to a greater extent than that by the conventional method, and the wire rod to be descaled, as a wire rod of 3-16mmϕafter hot rolling, excellent in wire drawability can be obtained. Moreover, the necessity of an intermediate heat treatment stage can be obviated, and the reduction of manufacturing costs can be facilitated.
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