Patents by Inventor Chengbin LI

Chengbin LI 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: 12018341
    Abstract: A method is disclosed for smelting low nitrogen steel using a dual-shell electric furnace having two furnace shells and an arc power system for alternatively electrically heating the furnace shells in which one of the two furnace shells is respectively sequentially subjected to electric heating, feeding, sealing of a molten pool and blowing of a combustion medium and oxygen to initiate smelting; when the temperature of molten steel in the furnace shell subjected to electric heating reaches a target temperature, initiating electric heating of the other furnace shell. The method can shorten the smelting period and improve the throughput of a production line of an electric furnace to efficiently meet the market requirements for low nitrogen steel while reducing the emission of environmental pollutants associated with known processes.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: June 25, 2024
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Yingtie Xu, Zhaoping Chen, Chengbin Li, Baoquan Yang
  • Patent number: 11298744
    Abstract: Disclosed are a continuous-curvature convex roll for continuously casting a bloom, and a manufacturing method therefore. An outer contour curve of a working portion of a body of the continuous-curvature convex roll contains a first straight-line segment (AB), a first transition curve segment (BC), an intermediate straight-line segment (CD), a second transition curve segment (DE) and a second straight-line segment (EF). The BC, the AB, and the CD have continuous first-order derivatives, continuous second-order derivatives, and continuous curvatures, thus forming a first transition curve with a continuous curvature. The BC and the DE are mirror-symmetrical. The continuous-curvature convex roll can uniformly deform a blank cast in a deformation area, thereby reducing cracks. The transition curve of the convex roll can be reduced, thereby being capable of further reducing a rolling pressure and the withdrawal resistance.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: April 12, 2022
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Rongjun Xu, Junjiang Liu, Genjie Wan, Chengbin Li, Xiangchun Liu, Qingyu Meng
  • Patent number: 11207729
    Abstract: Disclosed is a light reduction method for continuous casting of a bloom plain-barrelled roll-roll combination. The method comprises: firstly obtaining three-dimensional temperature field profile, a two-phase region, solid-phase region thickness, and solid-phase fraction of a billet, determining positions of start and end rolls of the reduction, and setting a reduction amount of each tensioner roll according to the volume shrinkage of the billet; in an interval fs=0.9-1.0 of the solid-phase fraction of the billet, performing a heavy reduction working mode; and in an interval fs=0.25-0.80 of the solid-phase fraction of the billet, performing a light reduction working mode.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: December 28, 2021
    Assignee: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Rongjun Xu, Junjiang Liu, Genjie Wan, Chengbin Li, Xiangchun Liu, Qingyu Meng
  • Publication number: 20210355555
    Abstract: Disclosed is a method for smelting low nitrogen steel by using an electric furnace. The smelting is performed using a dual-shell electric furnace, The dual-shell electric furnace has two furnace shells. An arc power system of the dual-shell electric furnace is used for alternatively electric heating on the two furnace shells, wherein when one of the two furnace shells is subjected to electric heating, feeding, sealing of a molten pool and blowing of a combustion medium and oxygen are sequentially carried out in the other furnace shell to start smelting. When the temperature of molten steel in the furnace shell subjected to electric heating reaches a target temperature, electric heating starts to be carried out on the other furnace shell.
    Type: Application
    Filed: September 25, 2019
    Publication date: November 18, 2021
    Inventors: Yingtie XU, Zhaoping CHEN, Chengbin LI, Baoquan YANG
  • Publication number: 20210323052
    Abstract: Disclosed is a light reduction method for continuous casting of a bloom plain-barrelled roll-roll combination. The method comprises: firstly obtaining three-dimensional temperature field profile, a two-phase region, solid-phase region thickness, and solid-phase fraction of a billet, determining positions of start and end rolls of the reduction, and setting a reduction amount of each tensioner roll according to the volume shrinkage of the billet; in an interval fs=0.9-1.0 of the solid-phase fraction of the billet, performing a heavy reduction working mode; and in an interval fs=0.25-0.80 of the solid-phase fraction of the billet, performing a light reduction working mode.
    Type: Application
    Filed: August 16, 2019
    Publication date: October 21, 2021
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Rongjun XU, Junjiang LIU, Genjie WAN, Chengbin LI, Xiangchun LIU, Qingyu MENG
  • Publication number: 20210316358
    Abstract: Disclosed are a continuous-curvature convex roll for continuously casting a bloom, and a manufacturing method therefore, belonging to the field of metal casting. An outer contour curve of a working portion of a body of the continuous-curvature convex roll consists of a first straight-line segment (AB), a first transition curve segment (BC), a intermediate straight-line segment (CD), a second transition curve segment (DE) and a second straight-line segment (EF). The first transition curve segment (BC), the first straight-line segment (AB), and the intermediate straight-line segment (CD) have continuous first-order derivatives, continuous second-order derivatives, and continuous curvatures, thus forming a first transition curve with a continuous curvature. The first transition curve segment (BC) and the second transition curve segment (DE) are mirror-symmetrical.
    Type: Application
    Filed: August 16, 2019
    Publication date: October 14, 2021
    Applicant: BAOSHAN IRON & STEEL CO., LTD.
    Inventors: Rongjun XU, Junjiang LIU, Genjie WAN, Chengbin LI, Xiangchun LIU, Qingyu MENG