Title: Manufacture of elongated bodies of high strength carbon steel

Abstract: The invention relates to a process for the production of elongated bodies, made of hard or semi-hard steel, by operations which reduce their cross-section. The process is characterized in that it comprises subjecting a body of high strength carbon steel to a first operation for reducing its cross-section essentially up to the limit of drawability, then heat treating the body at a temperature lower than the globulisation temperature of cementite so as to give the body further drawability, cooling the heat treated body to ambient temperature, and then subjecting the said body at ambient temperature to a second operation for reducing its cross-section. This process may be used in particular in the drawing of wires for reinforcement of tires.

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Inventors: Maiffredy, Lionel (Vaulz-en-Velin, FR)
Peeters, Luc (Tronville-en-Barrois, FR)
Theolier, Maurice (Vaulx-en-Velin, FR)

Application Number: 886434
Filing Date: 1978-03-14
Publication_date: 1979-03-06
Assignee: Sodetal, Societe Pour le Developpement du Filmentallique (Paris, FR)
Primary Class(es): 148/596 148/599
Other Classes:
US Patent Ref:

3580746	May, 1971	Behar	148/12.
3674570	Jul, 1972	Hallstrom et al.	148/12.
3810793	May, 1974	Heller	148/12.
3939015	Feb, 1976	Grange	148/12.
3959999	Jun, 1976	Filatov et al.	148/12.
4016009	Apr, 1977	Economopoulos et al.	148/12.

Other Refs:
Primary Examiner: Stallard, W.
Assistant Examiner:
Attorney: Sherman & Shalloway