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Weld protection and renewal process for heterogeneous joint in steel pipes used in nuclear pressurized water reactor comprises creating heterogeneous weld and applying thick layer of nickel-based alloy to pipe end inner surfaces
Weld protection and renewal process for heterogeneous joint in steel pipes used in nuclear pressurized water reactor comprises creating heterogeneous weld and applying thick layer of nickel-based alloy to pipe end inner surfaces
The process comprises creating a heterogeneous weld (12) and applying a thick layer (14) of a nickel-based alloy to the inner surfaces of both pipe ends, extending axially along them, by means of a build-up weld. The thick layer covers the inner surface of the weld (12), protecting the bi-metallic joint between the two tubes.
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