Patents by Inventor Aihua Ma

Aihua 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).

  • Publication number: 20120285584
    Abstract: A manufacture process of non-oriented silicon steel with high magnetic induction includes smelting and casting steel having a chemical composition by weight percent: Si 0.1˜1%, Al 0.005˜1.0%, C?0.004%, Mn=0.10˜1.50%, P?0.2%, S?0.005%, N?0.002, Nb+V+Ti?0.006%, and the rest is Fe. The steel is cast into a billet, which is heated and hot-rolled to 1150˜1200° C. into a plate at a finish-rolling temperature 830˜900° C. The plate is cooled to a temperature ?570° C. and cold-roll flattened at compression ratio 2˜5%. The flattened plate is normalized at temperature not below 950° C. for 30˜180s, and then pickled and cold-rolled into a sheet with thickness of the finished product. The sheet is finish-annealed quickly heating the sheet to 800˜1000° C. at temperature rise rate ?100° C./s, soaking the heated sheet for 5˜60s at the temperature, and then slowly cooling the sheet to 600˜750° C.
    Type: Application
    Filed: June 11, 2012
    Publication date: November 15, 2012
    Inventors: Zitao Wang, Bo Wang, Shishu Xie, Bingzhong Jin, Aihua Ma, Liang Zou, Yuhua Zhu, Zhanyuan Hu, Xiao Chen