C70600-O60铜镍焊接 Welding of C70600-O60 copper nickel

用气体保护钨极氩弧焊(GTAW)对UNS C70600-O60铜镍管进行焊接工艺试验,为了保证焊接质量,采用焊缝背面充氩进行保护,以得到良好的焊缝接头;通过试验确定焊接工艺,应用于铜镍管线的焊接生产中。
Gas shielded argon arc welding of copper-nickel pipe was carried out. In order to ensure the welding quality, argon was applied to the back of the weld to obtain good weld joint.

铜镍合金管焊接之焊丝选用？为防止焊后焊缝强度过分降低，适量提高焊丝中的锦含量可强化焊缝金属，并改善其抗腐蚀性能，特别是抗海水腐蚀的性能。该焊缝金届的热态及冷态的塑性均好，对减少产生焊接裂纹是十分有利的，固而我们选用了含镍量约30%的ERCuNi铜镍合金丝作填充料。
Selection of welding wire for Cu Ni alloy pipe welding? In order to prevent excessive reduction of weld strength after welding, increasing the content of bronze in the wire can strengthen the weld metal and improve its corrosion resistance, especially the corrosion resistance in seawater. The hot and cold plasticity of this weld is good, and it is very beneficial to reduce the welding crack. We have selected ERCuNi copper-nickel alloy wire containing about 30% nickel as filler material.