Patents by Inventor Pengjia GUO

Pengjia GUO 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).

  • Directionally solidified high-boron and high-vanadium high-speed steel and method for preparing same
    Patent number: 11878344
    Abstract: Disclosed are a high-boron high-vanadium high-speed steel and a method for preparing the same. Pig iron, scrap steel, ferrochromium, ferromanganese, ferroboron, ferrovanadium, industrial pure iron, ferromolybdenum, ferrotungsten, ferrosilicon and ferrotitanium are subjected to smelting at 1580-1600° C. and refining to obtain a liquid steel. The liquid steel is subjected to superheating, and directional solidification at a casting temperature of 1420-1430° C., and cooled to room temperature to obtain the directionally solidified high-speed steel.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: January 23, 2024
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Shengqiang Ma, Ping Lv, Pengjia Guo, Jiandong Xing, Xu Tan, Shasha Fu
  • DIRECTIONALLY SOLIDIFIED HIGH-BORON AND HIGH-VANADIUM HIGH-SPEED STEEL AND METHOD FOR PREPARING SAME
    Publication number: 20220297180
    Abstract: Disclosed are a high-boron high-vanadium high-speed steel and a method for preparing the same. Pig iron, scrap steel, ferrochromium, ferromanganese, ferroboron, ferrovanadium, industrial pure iron, ferromolybdenum, ferrotungsten, ferrosilicon and ferrotitanium are subjected to smelting at 1580-1600° C. and refining to obtain a liquid steel. The liquid steel is subjected to superheating, and directional solidification at a casting temperature of 1420-1430° C., and cooled to room temperature to obtain the directionally solidified high-speed steel.
    Type: Application
    Filed: June 9, 2022
    Publication date: September 22, 2022
    Inventors: Shengqiang MA, Ping LV, Pengjia GUO, Jiandong XING, Xu TAN, Shasha FU