Section steel wire of oil ring

Details Section steel wire of oil ring Section steel wire of oil ring

1993-10-19

1995-05-02

Yee, Deborah

Metal treatment

Stock

Ferrous

277DIG6, 277236, C22C 3700, F16J 900

Patent

active

054116090

ABSTRACT:
A section steel wire for an oil ring for use in an internal combustion engine, consisting essentially of, by weight, 0.6 to 1.5% carbon, not more than 1.5% Si, not more than 1.5% Mn, more than 20% and not more than 25% Cr, and optionally containing at least one group selected from three groups consisting of a group of at least one element of Mo and W in total amount of not more than 3% of "Mo+W/2", another group of at least one element of V and Nb in total amount of not more than 3% of "V+Nb/2" and still another group of at least one element selected from not more than 12% Co, not more than 5% Ni and not more than 5% Cu, and balance of Fe and unavoidable impurities. The section steel wire has a Vickers hardness of HV 300 to HV 450 and has a substantially H-or X-shaped cross-section. A thickness ratio of the thickness of the web portion bridging the flange portions to the total thickness (T) of the flange portions is not greater than 0.3.

REFERENCES:
patent: 4214762 (1980-07-01), McCormick et al.
Patent Abstracts of Japan vol. 7, No. 392 (M-1450) 22 Jul. 1993 & JP-A-05 071 642 (Hitachi Metals Ltd.) 23 Mar. 1993 *abstract*.
Patent Abstracts of Japan vol. 6, No. 236 (M-173) 25 Nov. 1982 & JP-A-57 137 028 (Kawasaki) 24 Aug. 1982 *abstract*.

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