Patents Assigned to Nippon Steel & Sumitomo Metal Coporation
  • Patent number: 8965554
    Abstract: Exemplary embodiments of a press-forming device, press-forming method, computer program/software arrangement and storage medium can be provided. The exemplary press-forming device can include a material characteristic input configured to input material characteristics. A state variable detector can be configured to measure a state variable comprising a metal mold distortion amount. A processing condition computer arrangement can be configured to determine from a first moment to a second moment at least one particular processing condition. Further, a processing condition controller can be configured to control the at least one processing condition from processing conditions.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: February 24, 2015
    Assignees: Nippon Steel & Sumitomo Metal Coporation, Arcelormittal France
    Inventors: Noriyuki Suzuki, Akihiro Uenishi, Yukihisa Kuriyama, Toshiyuki Niwa, Takuya Kuwayama, Mitsuharu Yamagata
  • Patent number: 8955284
    Abstract: A structure including a structural member configured like a frame with four sides is disclosed. A closed cross-section structural member serving as a reinforcing material is provided in a crossing corner of the structural member. The closed cross-section structural member includes two horizontal portions separated from each other in a thickness direction of the structural member and extending in an in-plane direction of the structural member and two vertical portions one of which connects first ends of the two horizontal portions together and the other of which connects second ends of the two horizontal portions together. The closed cross-section structural member includes a first opening formed therein facing an inner-peripheral flat surface of the structural member and a second opening formed therein facing inside of the structural member.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: February 17, 2015
    Assignee: Nippon Steel & Sumitomo Metal Coporation
    Inventors: Atsushi Seto, Takashi Matsuno, Eisaku Sakurada
  • Publication number: 20130291793
    Abstract: A flow regulating member of a hot dip coating tank which is able to suppress stir-up of bottom dross, characterized by being provided with flow regulating member horizontal plates which are respectively arranged horizontally from below two side end parts of a sink roll, which is arranged inside of a coating tank in a rotatable manner, toward outside directions of the sink roll and side members which are arranged at positions separated from the two ends of the sink roll, which extend upward from the end parts of the respective horizontal plates, and in which large numbers of dispersion holes are formed, the side members having an aperture ratio of 20 to 80%, and the dispersion holes having a hole diameter of 5 to 50 mm.
    Type: Application
    Filed: January 16, 2012
    Publication date: November 7, 2013
    Applicant: NIPPON STEEL & SUMITOMO METAL COPORATION
    Inventors: Mikio Kawamura, Yu Yamauchi, Tsukasa Oyama, Masaaki Omodaka, Noboru Furuta, Koichi Nishizawa
  • Publication number: 20130192724
    Abstract: A high-strength steel sheet has a chemical composition comprising C: 0.05-0.20%, Si: 0.02-3.0%, Mn: 0.5-3.0%, P: at most 0.5%, S: at most 0.05%, Cr: 0.05-1.0%, sol. Al: 0.01-1.0%, one or more elements selected from the group consisting of Ti, Nb, Mo, V, and W: a total of 0.002-0.03%, and a remainder of Fe and impurities. The sheet has an average grain diameter of ferrite of at most 3.0 ?m at least in a region of 100-200 ?m in the sheet thickness direction from the surface of the steel sheet. The average spacing in the sheet thickness direction of the remaining structure in this region is at most 3.0 ?m. Mechanical properties include at least 750 MPa tensile strength and at least 13,000 MPa·% (tensile strength×elongation).
    Type: Application
    Filed: May 27, 2010
    Publication date: August 1, 2013
    Applicant: Nippon Steel & Sumitomo Metal Coporation
    Inventors: Yasuaki Tanaka, Toshiro Tomida, Kaori Kawano