Process for manufacturing pearlitic steel wire and product made

Details Process for manufacturing pearlitic steel wire and product made Process for manufacturing pearlitic steel wire and product made

1986-12-31

1988-07-26

Brody, Christopher W.

Metal treatment

Compositions

Heat treating

148320, 148156, 428676, C21D 126

Patent

active

047598069

ABSTRACT:
A process for manufacturing pearlitic steel wire, particularly with fine diameters and for use in reinforcing rubber vehicle tires. 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 tha 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.sup.-2 or more. The wire may be cooled from the transformation temperature via a first stage in which the temperature is reduced to 400.degree. to 450.degree. C. over a period of time not less than 3 seconds.

REFERENCES:
patent: 3574000 (1971-04-01), Geipel et al.
patent: 3584494 (1971-06-01), Geipel et al.
patent: 3645805 (1972-02-01), Hoffmann et al.
patent: 4265678 (1981-05-01), Hachisuka et al.

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