Corrosion resistant steel filament

Details Corrosion resistant steel filament Corrosion resistant steel filament

1997-10-06

1998-10-20

Stryjewski, William

Textiles: spinning, twisting, and twining

Reinforcing or tire cords

57 9, 57206, 57236, 57311, D01H 1326

Patent

active

058229736

ABSTRACT:
A steel cord intended for use to reinforce rubber products is produced by drawing, into a steel filament of 0.10 to 0.40 mm in diameter and more than 3,000 N/mm.sup.2 in strength, a wire rod having a carbon content of more than 0.70% by weight, and twisting a plurality of such steel filaments together. Also a pneumatic tire is provided which employs in at least a portion of a reinforcing member thereof the steel cord improved in corrosion resistance and having an R.sub.1 /R.sub.0 ratio.times.100 which is less than 100, where R.sub.0 is the radius of spiral curvature of the spiraled steel filament resulting from untwisting said steel cord and R.sub.1 is the radius of spiral curvature of said steel filament of which the surface layer inside the spiral is removed by dissolving.

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patent: 5502960 (1996-04-01), Kobayshi et al.

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