Method for producing steel wires intended for the manufacture of flexible conduits, steel wires obtained by this method, and flexible conduits reinforced by such wires
US5407744A · kind A · utility
20Cited by
7References
16Claims
0Family size
Inventors
Key dates
| Filing date | Jan 14, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Jan 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2902
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing steel wires intended for the manufacture of flexible conduits, steel wires obtained by this method, and flexible conduits reinforced by such wires is characterized by the fact that, for a given strain-hardening rate of the initial wire, a heat treatment is carried out under conditions of time and temperature such that the steel wire obtained after treatment has a mechanical rupture strength (Rm) greater than 850 MPa and a structure containing little free ferrite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.