Process for finishing steelwire

Electrolysis: processes – compositions used therein – and methods – Electrolytic erosion of a workpiece for shape or surface...

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216100, C25F3/24

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active

059048301

ABSTRACT:
A spring steel wire that has a tensile strength of at least 2,000 N/mm.sup.2 and a surface roughness of not more than 5 .mu.m in terms of Rz, and a spring steel wire that consists essentially of from 0.5 to 0.8% by weight of C, from 1.2 to 2.5% by weight of Si, from 0.4 to 0.8% by weight of Mn, from 0.7 to 1.0% by weight of Cr, from 0.005 to 0.030% by weight of N and at least two elements selected from the group consisting of from 0.1 to 0.6% by weight of V, from 0.05 to 0.50% by weight of Mo and from 0.05 to 0.50% by weight of W, with the balance being Fe and incidental impurities containing not more than 0.005% by weight of Al and not more than 0.005% by weight of Ti, said wire having a surface roughness of not more than 5 .mu.m in terms of Rz, as well as production processes therefor.

REFERENCES:
patent: 2725352 (1955-11-01), Strobel
patent: 2850448 (1958-09-01), Stricker
patent: 3457107 (1969-07-01), Mickelson et al.
patent: 3816273 (1974-06-01), Snyder
patent: 4233089 (1980-11-01), Lanner
patent: 4909866 (1990-03-01), Abe et al.
patent: 5066370 (1991-11-01), Andreshak et al.
Patent Abstracts of Japan, vol. 13, No. 61 (C-567)(3409) Feb. 10, 1989.
Patent Abstracts of Japan, vol. 12, No. 165 (C-496)(3012) May 18, 1988.

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