Patents by Inventor Rongjun Xu

Rongjun Xu 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).

  • Publication number: 20240330607
    Abstract: A cloud translation calling method, comprising: receiving or obtaining content to be translated; calling the cloud translation service according to the cloud translation calling information; obtaining and/or displaying the results of cloud translation services; wherein, the cloud translation calling information is a cloud translation calling information provided by a third party; or the cloud translation calling information comprises basic information and additional information; or the cloud translation calling information includes information that can be used to call one or more cloud translation services. A cloud translation calling device, configured to call cloud translation service according to cloud translation calling information; or include a cloud translation module, which is configured to call the cloud translation service according to the cloud translation calling information.
    Type: Application
    Filed: December 20, 2021
    Publication date: October 3, 2024
    Inventors: Rongjun Xu, Qiang Shang, Longbu Zhang
  • 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: 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
  • Patent number: 7891405
    Abstract: A water-cooled mold for continuous casting includes two water-cooled wide copper plates arranged opposite to each other in a front and back direction and two water-cooled narrow copper plates arranged opposite to each other in a left and right direction. The upper portion of the cavity of the mold is a sprue area and the lower portion of the cavity is a mold cavity area. The sprue area is gradually narrowed in the casting direction and smoothly transited into the mold cavity, corresponding to the shape of a slab to be cast. The inside surfaces of the water-cooled narrow copper plates are smooth planar surfaces. A portion of the inside surface of the water-cooled wide copper plates in the sprue area is a curved surface and another portion in the mold cavity area is a planar surface. The curved surface and the planar surface portions form a continuous smooth surface.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: February 22, 2011
    Assignee: Baoshan Iron and Steel Co., Ltd.
    Inventors: Rongjun Xu, Xiao Liu, Yongquan Li, Jian Cui
  • Publication number: 20080283213
    Abstract: The invention provides a water-cooled mold for continuous casting. The mold comprises two water-cooled wide copper plates which are arranged opposite to each other in front and back direction and two water-cooled narrow copper plates which are arranged opposite to each other in left and right direction. The upper portion of the cavity of the mold is a sprue area and the lower portion of the cavity is a mold cavity area. The sprue area is gradually narrowed in the casting direction and smoothly transited into the mold cavity, corresponding to the shape of a slab to be cast. The inside surfaces of the water-cooled narrow copper plates are smooth planar surface. A portion of the inside surface of the water-cooled wide copper plates in the sprue area is a curved surface and a portion of the same in the mold cavity area is a planar surface. The curved surface portion and the planar surface portion form a continuous smooth surface.
    Type: Application
    Filed: September 20, 2004
    Publication date: November 20, 2008
    Inventors: Rongjun Xu, Xiao Liu, Yongquan Li, Jian Cui