The invention belongs to the field of
welding materials, and particularly relates to a flux-cored
welding rod for
stainless steel welding. The flux-cored
welding rod comprises a flux-cored welding core, a nano
graphene coating and a
coating from inside to outside, the flux-cored welding core is of a structure similar to a cable, a
nickel strip is sequentially bent into three e-shaped circles whichare externally tangent pairwise and are equal in
diameter, then is wound into a circular ring which is internally tangent to the e-shaped circles, and is closed to form the flux-cored welding core, gaps in the closed circular ring are filled with flux core, and modified
potassium titanate is adopted in the flux core to serve as an arc stabilizer. According to the welding rod, during welding, thecenter of the welding core is high in electrical
conductivity and stable in
electric arc, resistance heat generated by the flux-cored welding core is small, the heat conduction performance of the welding core is high, the
volume expansion of the welding core is small, and the reddening and
cracking resistance of the
coating is good. The use length of the welding rod is 88% or above of the length of the coating, the
utilization rate of the welding rod is increased, deposited
metal is uniform in chemical component, the comprehensive
mechanical property is good, and the welding rod is an innovation in the aspect of flux-cored welding rods for
stainless steel welding.