Patents by Inventor Qichen QUAN

Qichen QUAN 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: 20240181707
    Abstract: A method for optimizing design and manufacture of a self-supporting structure based on multi-axis 3D printing are provided, which comprises the following steps: using a structural topology optimization method based on an SIMP model to achieve the optimal configuration design of a complex structure, converting an image into a binary image, and post-processing the result of topology optimization; determining an overhanging angle of a structure boundary, and determining the printing direction of different printing partitions according to the classification; performing integrated optimization of angle constraints; extracting structural information, establishing a 3D solid model, and then partitioning and slicing the model, and generating a printing path for self-supporting multi-axis 3D printing manufacturing. The present disclosure has the beneficial effects that the self-supporting structure is generated in the optimization process, no additional support is needed in the printing process.
    Type: Application
    Filed: September 5, 2023
    Publication date: June 6, 2024
    Applicants: HANGZHOU CITY UNIVERSITY, ZHEJIANG UNIVERSITY
    Inventors: Zhen WANG, Jun YE, Yang ZHAO, Hongjia LU, Qichen GUO, Huiping TANG, Guan QUAN, Zhi DING
  • Publication number: 20220336127
    Abstract: Disclosed are a neodymium-iron-boron magnet material, a raw material composition, a preparation method therefor and a use thereof. The raw material composition of the neodymium-iron-boron magnet material comprises the following components by mass percentage: 29.5-32.8% of R?, wherein R? includes Pr and Nd, and Pr?17.15%; Al?0.5%; 0.90-1.2% of B; and 60-68% of Fe. The percentages are the mass percentages relative to the total mass of the raw material composition of the neodymium-iron-boron magnet material. Without adding a heavy rare earth element to the neodymium-iron-boron magnet material, the performance of the neodymium-iron-boron magnet material can still be significantly improved.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 20, 2022
    Inventors: Gang FU, Jiaying HUANG, Jixiang HUANG, Qichen QUAN
  • Publication number: 20220328218
    Abstract: Disclosed are a neodymium-iron-boron magnet material, a raw material composition, a preparation method therefor and a use thereof. The raw material composition of the neodymium-iron-boron magnet material comprises the following components by mass percentage: 29.5-32% of R?, wherein R? is a rare earth element and includes Pr and Nd; and Pr?17.15%; 0.25-1.05% of Ga; 0.9-1.2% of B; and 64-69% of Fe. Without adding a heavy rare earth element to the neodymium-iron-boron magnet material, the remanence and coercive force of the resulting neodymium-iron-boron magnet material are both relatively high.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 13, 2022
    Inventors: Gang FU, Jiaying HUANG, Jixiang HUANG, Qichen QUAN
  • Publication number: 20220293311
    Abstract: An R-T-B permanent magnet material and a preparation method therefor and a use thereof. The R-T-B permanent magnet material comprises the following components: R?, which is between 29.5 wt. % and 33.0 wt. %, the R comprising R, Pr, and Nd, R being a rare earth element other than Pr and Nd, the Pr content being greater than or equal to 8.85 wt. %, the mass ratio of Nd to R being less than 0.5; N, which is greater than 0.05 wt. %, and less than or equal to 4.1 wt. %, the N being Ti, Zr, or Nb; B, which is between 0.90 wt. % and 1.2 wt. %; and Fe, which is between 62.0 wt. % and 68.0 wt. %. A sintered permanent magnet product having a high coercive force and a stable temperature coefficient is prepared by using a formulation having a high Pr content. The described formulation can maximally exert the advantage of Pr, and effectively reduce production costs.
    Type: Application
    Filed: July 7, 2020
    Publication date: September 15, 2022
    Inventors: Gang FU, Jiaying HUANG, Jixiang HUANG, Qichen QUAN
  • Publication number: 20220285059
    Abstract: Disclosed are a neodymium-iron-boron magnet material, a raw material composition and a preparation method therefor and a use thereof. The raw material composition of the neodymium-iron-boron magnet material comprises the following components by mass percentage: 29.5-32% of R?, wherein R? is a rare earth element and includes Pr and Nd; and Pr?17.15%; Cu?0.35%; 0.9-1.2% of B; 64-69.2% of Fe. The percentages refer to the mass percentages relative to the total mass of the raw material composition of the neodymium-iron-boron magnet material. Without the addition of a heavy rare earth element, the neodymium-iron-boron magnet material can still have a high remanence and coercive force.
    Type: Application
    Filed: July 7, 2020
    Publication date: September 8, 2022
    Inventors: Gang FU, Jiaying HUANG, Jixiang HUANG, Qichen QUAN