Tire having corrosion resistant steel cord

Details Tire having corrosion resistant steel cord Tire having corrosion resistant steel cord

1996-12-19

1999-02-23

Johnstone, Adrienne

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152451, B60C 900, B60C 904

Patent

active

058739629

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.

REFERENCES:
patent: 4481996 (1984-11-01), De Bondt et al.
patent: 4938015 (1990-07-01), Kinoshita
patent: 5236029 (1993-08-01), Nakashio et al.

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