COMPOSITION WELDING WIRE Russian patent published in 2017 - IPC B23K35/22 B23K35/40 B32B1/08 C23C30/00 

FIELD: metallurgy.

SUBSTANCE: composition welding wire for repair by fusible welding of the gas turbine engine parts made of heat-resisting alloys based on nickel, cobalt or iron, comprises a core and a surface layer applied and connected to it, containing boron and/or silicon. The total content of boron and/or silicon in the composition welding wire is calculated by formula where C_∑ is the total content of boron and/or silicon in the welding wire; D' is the diameter of the welding wire; C_SL is the content of boron and/or silicon in the surface layer; T is the thickness of the surface layer, wherein C_∑ is 0.1-10 wt %.

EFFECT: prevention of the cracking in the heat affected zone due to the fusible welding and argonarc welding of the dispersion-hardened heat-resisting alloys.

17 cl, 13 dwg, 1 tbl, 6 ex