Patents Examined by Jerry J Yeh
  • Patent number: 10792769
    Abstract: A welding flux for duplex stainless steel is used to solve the problem of insufficient penetration depth of a weld formed between two jointed workpieces when workpieces with a thickness above 3 mm is joined by TIG welding. The welding flux for duplex stainless steel includes 25-35 wt % of SiO2, 20-25 wt % of Cr2O3, 10-20 wt % of MoO3, 10-15 wt % of NiO, 5-10 wt % of FeO, 5-10 wt % of Co3O4, 5-10 wt % of MnO2 and 3-5 wt % of CuO.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: October 6, 2020
    Assignee: NATIONAL PINGTUNG UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventor: Kuang-Hung Tseng