公开(公告)号：US20190330119A1

公开(公告)日：2019-10-31

申请号：US16503613

申请日：2019-07-04

Applicant: Huazhong University of Science and Technology

Inventor： Chunze YAN ,  Wei ZHU ,  Hua FU ,  Zhongfeng XU ,  Yusheng SHI ,  Chenhui LI ,  Jiamin WU ,  Shifeng WEN ,  Zhaoqing LI

IPC: C04B35/565 ,  C04B35/80 ,  C04B35/622

Abstract: A method of preparing a C/C-SiC composite part, including: preparing, using a solvent evaporation process, carbon fiber composite powders coated with a phenol resin; according to a three-dimensional model of a to-be-prepared part, forming a green part corresponding to the to-be-prepared part using the carbon fiber composite powders and a 3D printing technology; densifying the green part to yield a C/C porous body having a density of 0.7 to 1.1 g/cm3 and an open porosity of 30 to 50%; and siliconizing the C/C porous body under vacuum, removing excess silicon to yield a primary carbon fiber reinforced carbon-silicon carbide (C/C-SiC) body, densifying the primary C/C-SiC body, to obtain a final C/C-SiC composite part.

公开(公告)号：US20200376708A1

公开(公告)日：2020-12-03

申请号：US16655215

申请日：2019-10-16

Applicant: Huazhong University of Science and Technology

Inventor： Yusheng SHI ,  Chunze YAN ,  Zhaoqing LI ,  Peng CHEN ,  Zhufeng LIU ,  Jiamin WU ,  Shifeng WEN ,  Chenhui LI ,  Lichao ZHANG

IPC: B28B1/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B29C64/153 ,  B29C64/35 ,  B29C64/232 ,  B29C64/236 ,  B29C64/245 ,  B29C64/25 ,  C23C16/24

Abstract: A selective laser sintering (SLS) device. The SLS device includes a laser forming unit, a support platform and a driving mechanism. The support platform is configured to support a plurality of raw materials for additive manufacturing of an object including a plurality of sections. The laser forming unit is disposed on the support platform and is configured to lay powders on a surface of each section of the object and sinter the powders. The driving mechanism is disposed under the laser forming unit and includes a vertical driving mechanism and a horizontal driving mechanism. The vertical driving mechanism is connected to the laser forming unit and configured to lift the laser forming unit layer by layer. The horizontal driving mechanism is configured to drive the laser forming unit to move in a horizontal direction with respect to the support platform.

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.