Si-killed steel wire rod and spring

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United States of America Patent

PATENT NO 9725779
SERIAL NO

14967520

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Abstract

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A Si-killed steel wire rod for obtaining a spring excellent in fatigue properties and a spring excellent in fatigue properties obtained from such steel wire rod are provided. In the Si-killed steel wire rod of the present invention, oxide-based inclusions present in the wire rod contain SiO2: 30-90%, Al2O3: 2-35%, MgO: 35% or below (not inclusive of 0%), CaO: 50% or below (not inclusive of 0%), MnO: 20% or below (not inclusive of 0%) and BaO: 0.2-20% respectively, and total content of (CaO+MgO) is 3% or above.

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Patent Owner(s)

  • KOBE STEEL, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sakamoto, Koichi Kobe, JP 150 1640
Sugimura, Tomoko Kobe, JP 24 49

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