Patents Assigned to Wuhan Yuanrong Technology Co., Ltd.
  • Chromium-free insulation coating composition, method for making same, and grain oriented silicon steel sheet
    Patent number: 10301480
    Abstract: A chromium-free insulation coating composition includes 100 parts by weight of a phosphate solution, 1-5 parts by weight of molybdate, 50-150 parts by weight of silica sol, 3-13 parts by weight of selenium dioxide, 1-10 parts by weight of metal oxide and/or metal hydroxide, 5-15 parts by weight of organic acid, 1-6 parts by weight of boric acid, and 100-300 parts by weight of water.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: May 28, 2019
    Assignee: Wuhan Yuanrong Technology Co., Ltd.
    Inventors: Gang Zhang, Hu Gao, Jun Liang