Patents Assigned to Central Iron & Steel Research Institute Ministry Metallurgical Industry
  • Patent number: 5927117
    Abstract: A method to measure strip shape in rolling and a method of using the measuring method to control the same are provided in present invention, which can dramatically simplify the computation during the measurement of strip shape. On the basis of a prior mathematical model, the invention is realized by applying a strip rigidity coefficient q reflecting the features of a piece to be rolled, and a shape rigidity coefficient m reflecting those of a mill, to express heredity coefficient .eta..
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: July 27, 1999
    Assignee: Central Iron & Steel Research Institute Ministry Metallurgical Industry
    Inventor: Jinzhi Zhang
  • Patent number: 5389333
    Abstract: The present invention discloses a hydrogen storage alloy having a formula ofMm.sub.1-a M.sub.a Ni.sub.b Mn.sub.c Co.sub.d Al.sub.e X.sub.fwherein, Mm is misch metal mainly containing La, Ce, Pr, Nd and the balance amount of unavoidable impurities; M is titanium, zirconium or the mixture thereof; X is nitrogen, boron or the mixture thereof; and a is in the range of 0.01-0.2; b is in the range of 3.50-4.60; c is in the range of 0.20-0.60; d is in the range of 0.10-0.7; e is in the range of 0.1-0.5; f is in the range of 0.005-0.2; and b+c+d+e+f is in the range of 4.8-5.4.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: February 14, 1995
    Assignee: Central Iron & Steel Research Institute of Ministry of Metallurgical Industry
    Inventors: Yufeng Li, Deming Xu, Mingming Geng, Jun Li, Siqing Xu