C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/34
C21D 8/06 (2006.01)
Patent
CA 1242960
ABSTRACT OF THE DISCLOSURE A steel wire, and a method for producing the same, for use in the manufacture of a chassis or suspension automotive spring having a high sag resistance. In accordance with the invention, after a heat treatment is effected, strain is imposed to the steel wire so as to thereby improve the sag resistance. The strain may be imposed either. during tempering or at room temperature following tempering.
475039
Matsushima Norihisa
Murai Teruyuki
Ogita Hideo
Takamuku Seizo
Riches Mckenzie & Herbert Llp
Sumitomo Electric Industries Ltd.
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