Patents by Inventor Michel Lluansi

Michel Lluansi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4594115
    Abstract: A process for the manufacture of martensitic stainless steel rods or machine wire, and the products thus obtained, by hot rolling, which steel comprises by % weight:C=0.015 to 0.090N=0.015 to 0.080 with C+N=0.05 to 0.120Cr=9.0 to 14.0Nb=.ltoreq.0.1V=.ltoreq.0.1S=.ltoreq.0.35Si=.ltoreq.1.0Mn=.ltoreq.1.0Ni=.ltoreq.2.0Mo=.ltoreq.1.0P=.ltoreq.0.040Cu=.ltoreq.1.0Fe and impurities=balanceand having the following mechanical properties: R=900 to 1100 MPa; E 0.2=650 to 850 MPa; A.gtoreq.10%; and resilience KCU.gtoreq.40 J/cm.sup.2, and wherein the preheating or the end of the hot rough preliminary processing preceding the final hot rolling brings the products to a temperature between 1000.degree. C. and 1160.degree., and wherein the final hot rolling which is effected at a temperature below or equal to 1150.degree. C. produces a section reduction "S/s" which is at least equal to 3, and which reduction is followed by homogenous cooling and when S.ltoreq.0.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: June 10, 1986
    Assignee: Ugine Aciers
    Inventors: Michel Lacoude, Michel Lluansi, Philippe Munier