Patent ID: 8729418
Filing Date: 2014-05-20
Classification: B23K

Abstract:
1. A method for repairing a welded connection between first and second components each having a respective inside, outside and end face interconnecting the inside and the outside, the first component being formed of a ferritic basic body with an inside plating formed of an austenitic material and an end face carrying a buffer layer formed of a nickel-based alloy, and a weld seam formed of a nickel-based welding additive interconnecting the end faces of the first and second components, the method comprising the following steps: a) stripping off a weld region between the two components on a side of the plating to form a recess having a bottom; b) welding an intermediate layer, formed of an alloy weldable both to the nickel-based alloy of the buffer layer and to an austenitic material, into the recess to partially fill the recess and completely cover the bottom of the recess; c) welding a closing layer formed of austenitic material onto the intermediate layer to cover an entire area of the intermediate layer; and d) smoothing the closing layer by cutting machining.