Patents by Inventor Lijuan ZHENG

Lijuan ZHENG 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).

  • COATED CUTTING TOOL AND PREPARATION METHOD THEREOF
    Publication number: 20220234114
    Abstract: A cutting tool for machining titanium alloy or superalloy includes a Me-B-N coating. The Me-B-N coating is Me1-B-N; Me1 is one or more selected from transition metal elements Hf, V, Nb, Ta and Mo, and the atomic percentage of each element is: Me1: 8-40%, B: 15-60%, and N: 10-65%; and the Me-B-N coating includes Me1Nx phase and BN phase; or, the Me-B-N coating is Me1-Me2-B-N, Me1 is one or more selected from transition metal elements Hf, V, Nb, Ta and Mo; Me2 is one or more selected from transition metal elements Ti, Zr, Cr, and W; and the atomic percentage of each element is: Me1: 4-36%, Me2: 4-36%, B: 15-60%, and N: 10-65%; and the Me-B-N coating includes Me1Nx phase, Me2Nx phase and BN phase.
    Type: Application
    Filed: April 15, 2022
    Publication date: July 28, 2022
    Inventors: Chengyong WANG, Haisheng LIN, Lijuan ZHENG, Tongchun KUANG, Yang DENG, Qimin WANG
  • SILICON NITRIDE CERAMIC TOOL COMPRISING DIAMOND FILM AND METHOD OF PREPARING THE SAME
    Publication number: 20210237168
    Abstract: A cutting tool, including a silicon nitride (Si3N4) ceramic substrate, and a diamond film coated on the surface of the Si3N4 ceramic substrate. The diamond film has a thickness of 7-12 ?m. The cutting tool includes a tool nose, a blade, and a handle. The blade has a rake angle ? of 5-15°, a clearance angle ? of 10-14°, and a helix angle of 15-45°. The blade includes four cutting edges.
    Type: Application
    Filed: March 29, 2021
    Publication date: August 5, 2021
    Inventors: Chengyong WANG, Yuhai ZHOU, Lijuan ZHENG