Aspects of the Welding of Bronze Br.A9Zh4N4Mts1 with Copper-Nickel Alloys

This articles examines the formation of high-quality joints between aluminum bronzes and copper-nickel alloys that contain different amounts of nickel. The joints are formed by explosion welding or hard-facing as part of the fabrication of products for chemicals production, gas engineering, shipbuilding, and other sectors of industry (reinforcement bars, heat exchangers, pipelines, etc.). A study is made of the effect of the nickel content of copper-nickel welding wires on crack formation in hard-faced metal, its structure, and its mechanical properties when aluminum-nickel bronze of grade Br.A9Zh4N4Mts1 is joined with copper-nickel alloys by argon-arc welding and hard facing. It is shown that the use of welding wires made of copper-nickel alloys with a nickel content of up to 18% guarantees the formation of high-quality crack-free joints with mechanical properties that are comparable to the properties of the lower-strength material which is used.