C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
117/118, 148/34.
C21D 8/06 (2006.01) B05D 7/20 (2006.01) B21F 19/00 (2006.01) C21D 9/52 (2006.01) C21D 9/64 (2006.01)
Patent
CA 1269594
ABSTRACT A process for manufacturing pearlitic steel wire, particu- larly with fine diameters and for use in reinforcing rubber vehicle tyres. The wire is subjected to a patenting treatment before being drawn down to its final diameter, but is held at the transformation temperature for no more than 5 seconds after transformation has taken place. Such a step renders the wire capable of being subjected to true strains of more than 3.0 and achieving tensile strengths of 3000 Nmm-2 or more. The wire may be cooled from the transformation tempe- rature via a first stage in which the temperature is reduced to 400 to 450°C over a period of time not less than 3 seconds.
525457
Dambre Paul
Kirby Eades Gale Baker
N.v. Bekaert S.a.
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