Patents by Inventor Mengmei MA

Mengmei MA 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 eliminating hollow defect in atomized alloy powder
    Patent number: 10486233
    Abstract: The invention relates to a method for eliminating hollow defects in atomized superalloy powder, and pertains to the field of powder metallurgy materials. A ball-milling processing is conducted on the atomized alloy powder to eliminate the hollow defect, obtain solid powder and increase powder utilization efficiency. By controlling mill ball diameters, mass ratio of mill balls with different diameters, mass ratio of ball to powder and ball milling time, a multi-directional impact on the powder is achieved, thereby control powder shape and obtain solid spherical powder. The invention eliminates powder hollow defect by using ball milling process and equipment. This invention with high powder utilization efficiency, short ball milling time and simple operating process, can be used for large-scale preparation and application.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: November 26, 2019
    Assignee: CENTRAL SOUTH UNIVERSITY
    Inventors: Zuming Liu, Pengfei Su, Boyun Huang, Qinglong Duan, Mengmei Ma, Yang Guo, Shiqi Chen
  • METHOD FOR ELIMINATING HOLLOW DEFECT IN ATOMIZED ALLOY POWDER
    Publication number: 20180056398
    Abstract: The invention relates to a method for eliminating hollow defects in atomized superalloy powder, and pertains to the field of powder metallurgy materials. A ball-milling processing is conducted on the atomized alloy powder to eliminate the hollow defect, obtain solid powder and increase powder utilization efficiency. By controlling mill ball diameters, mass ratio of mill balls with different diameters, mass ratio of ball to powder and ball milling time, a multi-directional impact on the powder is achieved, thereby control powder shape and obtain solid spherical powder. The invention eliminates powder hollow defect by using ball milling process and equipment. This invention with high powder utilization efficiency, short ball milling time and simple operating process, can be used for large-scale preparation and application.
    Type: Application
    Filed: March 8, 2016
    Publication date: March 1, 2018
    Applicant: CENTRAL SOUTH UNIVERSITY
    Inventors: Zuming LIU, Pengfei SU, Boyun HUANG, Qinglong DUAN, Mengmei MA, Yang GUO, Shiqi CHEN
  • METHOD FOR REMOVING PRIOR PARTICLE BOUNDARY AND HOLE DEFECT OF POWDER METALLURGY HIGH-TEMPERATURE ALLOY
    Publication number: 20170216919
    Abstract: A method for removing prior particle boundaries and hole defects of a powder metallurgy high-temperature alloy. The method includes performing mechanical ball milling treatment on an atomized powder, thermosetting the powder to form a shape, and preparing a powder metallurgy high-temperature alloy.
    Type: Application
    Filed: March 8, 2016
    Publication date: August 3, 2017
    Applicant: CENTRAL SOUTH UNIVERSITY
    Inventors: Zuming LIU, Pengfei SU, Boyun HUANG, Qinglong DUAN, Yang GUO, Mengmei MA