Patents Assigned to Dr. Michael J. Ruthner
  • Method for Producing Iron Powder Respectively Microalloyed Steel Powder Mainly for Metallurgical Applications and Method for Producing Thereof
    Publication number: 20080175740
    Abstract: A method for manufacturing of iron- respectively micro-alloyed steel powders, starting from fluffy spray roasted iron oxides exhibiting a specific surface area in excess of 2.0 m2/g and residual chloride contents over 440 ppm Cl?, decrease the chloride content in two steps to less than 100 ppm, the specific surface area (BET) of to a pre-selected value of less than 10.0 m2/g, preferably between 0.1 and 2.0 m2/g and reduce the pre-sintered granules exhibiting a bulk density in excess of 1.200 g/dm3.
    Type: Application
    Filed: December 3, 2007
    Publication date: July 24, 2008
    Applicant: Dr. Michael J. Ruthner
    Inventor: Michael J. RUTHNER