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    INDEPENDENTLY TEMPERATURE-CONTROLLED HIGH-TEMPERATURE SELECTIVE LASER SINTERING FRAME STRUCTURE
    6.
    发明申请
    INDEPENDENTLY TEMPERATURE-CONTROLLED HIGH-TEMPERATURE SELECTIVE LASER SINTERING FRAME STRUCTURE 审中-公开

    公开(公告)号：US20200114583A1

    公开(公告)日：2020-04-16

    申请号：US16357791

    申请日：2019-03-19

    Applicant: Huazhong University of Science and Technology

    Inventor： Shifeng WEN ,  Peng CHEN ,  Chunze YAN ,  Lei YANG ,  Zhaoqing LI ,  Hongzhi WU ,  Yusheng SHI

    IPC: B29C64/393 ,  B29C64/153 ,  B29C64/245 ,  B33Y30/00 ,  B33Y50/02

    Abstract: The present disclosure belongs to the technical field of advanced manufacturing auxiliary equipment, and discloses an independently temperature-controlled high-temperature selective laser sintering frame structure, comprising a galvanometric laser scanning system, a powder feeding chamber, a forming chamber and a heat-insulating composite plate, and targeted optimization design is performed on the respective functional components. According to the invention, the independently temperature-controlled frame structure can simultaneously ensure the uniformity of the powder preheating temperature field of the powder feeding chamber platform and the uniformity of the processing temperature field of the forming chamber platform, so that powder on the powder feeding chamber platform can reach the sinterable temperature before being conveyed, and conveyance of cold powder to the sintered melt is avoided, thereby reducing the possibility of warpage of the parts while reducing actual sintering delay time and improving actual sintering efficiency. The independently temperature-controlled frame structure of the present disclosure is particularly suitable for high-temperature laser sintering of high-performance polymers such as polyaryletherketones and aromatic polyamides at 400° C.

    METHOD FOR PREPARING THREE-DIMENSIONAL POROUS GRAPHENE MATERIAL
    7.
    发明申请
    METHOD FOR PREPARING THREE-DIMENSIONAL POROUS GRAPHENE MATERIAL 审中-公开

    公开(公告)号：US20170267533A1

    公开(公告)日：2017-09-21

    申请号：US15614574

    申请日：2017-06-05

    Applicant: Huazhong University of Science and Technology

    Inventor： Chunze YAN ,  Yusheng SHI ,  Wei ZHU

    IPC: C01B31/04 ,  C23F4/04 ,  B33Y10/00

    CPC classification number: C23F4/04 ,  B33Y10/00 ,  C01B32/184 ,  C01B32/186 ,  C01B32/194 ,  C01B2204/32 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16

    Abstract: A method for preparing a three-dimensional porous graphene material, including: a) constructing a CAD model corresponding to a required three-dimensional porous structure, and designing an external shape and internal structure parameters of the model; b) based on the CAD model, preparing a three-dimensional porous metal structure using a metal powder as material; c) heating the three-dimensional porous metal structure and preparing a metal template of the required three-dimensional porous structure; d) placing the metal template in a tube furnace and heating the metal template to a temperature of between 800 and 1000° C.; standing for 0.5-1 hr, introducing a carbon source to the tube furnace for continued reaction, cooling resulting products to room temperature to yield a three-dimensional graphene grown on the metal template; and e) preparing a corrosive solution, and immersing the three-dimensional graphene in the corrosive solution.

    SUPERCONDUCTING POWER GENERATION DEVICE AND POWER GENERATION METHOD
    8.
    发明公开
    SUPERCONDUCTING POWER GENERATION DEVICE AND POWER GENERATION METHOD 审中-公开

    公开(公告)号：US20230163674A1

    公开(公告)日：2023-05-25

    申请号：US17646376

    申请日：2021-12-29

    Applicant: Huazhong University of Science and Technology

    Inventor： Bin SU ,  Zheng MA ,  Chunze YAN ,  Yusheng SHI

    IPC: H02K55/00 ,  H02K9/19 ,  H02K5/20

    CPC classification number: H02K55/00 ,  H02K9/19 ,  H02K5/20

    Abstract: The present disclosure provides a superconducting power generation device and a power generation method. The power generation device includes a superconductor, a conductive coil, a permanent magnet and a cooling medium. The superconductor is made of a second-type superconducting material, and when an ambient temperature is lower than a superconducting critical temperature of the second-type superconducting material, the second-type superconducting material is capable of generating a magnetic levitation force for an outer magnet so as to levitate the permanent magnet. After an acting force is applied to the permanent magnet, the position of the permanent magnet is changed relative to that of the conductive coil, and then, magnetic field distribution around the conductive coil is changed, so that the magnetic flux passing through the coil is changed, an induced electromotive force is generated in the coil, and then, conversion from mechanical energy to electric energy is achieved. By using the device provided by the present disclosure, the conversion from the mechanical energy to the electric energy in an ultra-low temperature environment can be achieved, and thus, problems about energy sources on low-temperature celestial bodies in extrasolar systems are solved.

    POLYMER MULTI-MATERIAL HIGH-FLEXIBILITY LASER ADDITIVE MANUFACTURING SYSTEM AND METHOD THEREOF
    9.
    发明申请
    POLYMER MULTI-MATERIAL HIGH-FLEXIBILITY LASER ADDITIVE MANUFACTURING SYSTEM AND METHOD THEREOF 审中-公开

    公开(公告)号：US20200031057A1

    公开(公告)日：2020-01-30

    申请号：US16248296

    申请日：2019-01-15

    Applicant: Huazhong University of Science and Technology

    Inventor： Chunze YAN ,  Hongzhi WU ,  Yusheng SHI ,  Shifeng WEN ,  Lichao ZHANG

    IPC: B29C64/393 ,  B29C64/118 ,  B29C64/268 ,  B29C64/209 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

    Abstract: The invention belongs to the field of filament additive manufacturing, and discloses a polymer multi-material high-flexibility laser additive manufacturing system and a method thereof. The system comprises a first robot arm, a second robot arm, a positioner, a rotational extrusion nozzle in which a plurality of extrusion modules are disposed and a laser, each extrusion module is used for extruding one kind of filament, and the rotational extrusion nozzle is connected with the first robot which drives the rotational extrusion nozzle to move according to a preset trajectory; the laser is connected with the second robot, and is used for emitting a laser to fuse the filament extruded from the rotational extrusion nozzle, and through the cooperative motion of the first robot and the second robot, the extrusion and fusion of the filament are performed synchronously; the positioner serves as a forming mesa, and the rotation of the positioner cooperates with the motions of the two robots. With the present invention, problems such as easy blocking and short service life of the extrusion nozzle in the FDM forming are solved, thereby ensuring high flexibility of the manufacturing system and achieving the extrusion forming of the multi-material filaments.

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