发明名称 |
High-carbon steel wire rod of high ductility |
摘要 |
A high-carbon steel wire rod of high ductility for steel cord and the like is provided that experiences little breakage during drawing. The high-carbon steel wire rod of high ductility is a high-carbon steel wire rod fabricated by hot rolling that that has a carbon content of 0.7 mass % or greater, wherein 95% or greater of the wire rod metallographic structure is pearlite structure and the maximum pearlite block size of pearlite at the core of the hot-rolled wire rod is 65 μm or less. The high-carbon steel wire rod of high ductility has a tensile strength in a range of {248+980×(C mass %)}±40 MPa} and a reduction of area of {72.8−40×(C mass %) %} or greater. The high-carbon steel wire rod of high ductility is characterized in that the average pearlite block size at the core of the hot-rolled wire rod constituted by ferrite grain boundaries of an orientation difference of 9 degrees or greater as measured with an EBSP analyzer is 10 μm or greater and 30 μm or less. |
申请公布号 |
US2011284139(A1) |
申请公布日期 |
2011.11.24 |
申请号 |
US201113134210 |
申请日期 |
2011.05.31 |
申请人 |
NISHIDA SEIKI;YAMASAKI SHINGO;DEMACHI HITOSHI;MUROGA NARIYASU;OHASHI SHOUICHI;NAKAMURA KENICHI;KOSAKA MAKOTO;KOMIYA NOBUYUKI;SAHARA SUSUMU;NIPPON STEEL CORPORATION |
发明人 |
NISHIDA SEIKI;YAMASAKI SHINGO;DEMACHI HITOSHI;MUROGA NARIYASU;OHASHI SHOUICHI;NAKAMURA KENICHI;KOSAKA MAKOTO;KOMIYA NOBUYUKI;SAHARA SUSUMU |
分类号 |
C21D9/52;C21D6/00 |
主分类号 |
C21D9/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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