Patents by Inventor Cuirong Liu

Cuirong Liu 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).

  • Method for preparing multilayer metal composite pipe
    Patent number: 11850645
    Abstract: A method for preparing a multilayer metal composite pipe includes steps of: internally and externally grinding blank pipes; cleaning oil stains; assembling a multilayer metal pipe; drawing to reduce a diameter; performing high-speed friction welding at the pipe ends; performing heat treatment; performing four-roller cross-rolling; straightening; performing two-roller cold-rolling; performing cold-drawing to reduce the diameter; performing cold-expansion to reduce the diameter; performing precise cold-rolling; degreasing; brightening; performing surface grinding; cleaning dust; detecting multilayer metal interface bonding; detecting flaws; testing metal structure performance; and sizing and packaging.
    Type: Grant
    Filed: October 24, 2021
    Date of Patent: December 26, 2023
    Assignee: Taiyuan University of Science and Technology
    Inventors: Zhibing Chu, Chun Xue, Duo Zhang, Dong Wei, Qianhua Yang, Cuirong Liu, Yugui Li
  • Method for preparing multilayer metal composite pipe
    Publication number: 20220040745
    Abstract: A method for preparing a multilayer metal composite pipe includes steps of: internally and externally grinding blank pipes; cleaning oil stains; assembling a multilayer metal pipe; drawing to reduce a diameter; performing high-speed friction welding at the pipe ends; performing heat treatment; performing four-roller cross-rolling; straightening; performing two-roller cold-rolling; performing cold-drawing to reduce the diameter; performing cold-expansion to reduce the diameter; performing precise cold-rolling; degreasing; brightening; performing surface grinding; cleaning dust; detecting multilayer metal interface bonding; detecting flaws; testing metal structure performance; and sizing and packaging.
    Type: Application
    Filed: October 24, 2021
    Publication date: February 10, 2022
    Inventors: Zhibing Chu, Chun Xue, Duo Zhang, Dong Wei, Qianhua Yang, Cuirong Liu, Yugui Li