Patents Assigned to Sprint Metal-Societe de Production Internationale de Trefiles
  • Patent number: 6447716
    Abstract: Nickel-based alloy useful for welding, welding method, and welding electrode.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: September 10, 2002
    Assignees: Ugine-Savoie Imphy, Sprint Metal-Societe de Production Internationale de Trefiles
    Inventors: Ricardo Cozar, Albert Bruyere, Bernard Bonnefois
  • Patent number: 6164105
    Abstract: Measurement of a mechanical characteristic of a long metallic product. The long product is passed through at least one turn of an electromagnetic coil energized with a variable current, the impedance of the electromagnetic coil is measured continuously and the mechanical characteristic of the long product or variations therein are determined by comparing the measured impedance with at least one predetermined impedance value. The method can be used in particular to regulate the production of hyperquenched austenitic steel spring wire containing martensite (.alpha.') by drawing the wire through successive dies. The impedance of the coil through which the wire passes when it leaves the die is measured in order to regulate at least one of the following parameters: the temperature of the die and the wire and the wire speed.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: December 26, 2000
    Assignee: Sprint Metal-Societe de Production Internationale de Trefiles
    Inventors: Michel Laverroux, Pierre Megel
  • Patent number: 6106639
    Abstract: Stainless steel wire of diameter smaller than 2 mm and with a tensile strength greater than 2100 MPa, consisting of a steel whose chemical composition includes, by weight: 0%.ltoreq.C.ltoreq.0.03%, 0%.ltoreq.Mn.ltoreq.2%, 0%.ltoreq.Si.ltoreq.0.5%, 8%.ltoreq.Ni.ltoreq.9%, 17%.ltoreq.Cr.ltoreq.18%, 0%.ltoreq.Mo.ltoreq.0.4%, 3%.ltoreq.Cu.ltoreq.3.5%, 0%.ltoreq.N.ltoreq.0.03%, S.ltoreq.0.01%, P.ltoreq.0.04%, the remainder being iron and impurities resulting from the production. Process of manufacture of the wire and uses.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: August 22, 2000
    Assignees: Sprint Metal Societe de Production Internationale de Trefiles, Imphy S.A., Ugine Savoie
    Inventors: Joel Marandel, Jean-Michel Hauser
  • Patent number: 6048416
    Abstract: Steel, steel wire, and a process for forming a drawn wire, especially tire-reinforcing wire of diameter smaller than 0.4 mm, by drawing a steel of the following composition by weight: 0.005%.ltoreq.carbon.ltoreq.0.050%; 0.005%.ltoreq.nitrogen.ltoreq.0.050%; 0.1%.ltoreq.silicon.ltoreq.2.0%; 0.1%.ltoreq.manganese.ltoreq.5%; 5%.ltoreq.nickel.ltoreq.12%; 10%.ltoreq.chromium.ltoreq.20%; 0.01%.ltoreq.copper.ltoreq.4%; 0.01%.ltoreq.molybdenum.ltoreq.3%,the base wire being subjected to:drawing to a cumulative deformation ratio .epsilon. of larger than 2 and smaller than 4,an intermediate annealing treatment at above drawing to a cumulative deformation ratio .epsilon. of smaller than 4.5 and larger than 3.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: April 11, 2000
    Assignees: Ugine-Savoie Imphy, Sprint Metal - Societe de Production Internationale de Trefiles
    Inventors: Jean-Michel Hauser, Joel Marandel