My company manufactures automated welding systems. In our TIG system we preheat the filler wire with an electric current, the wire feed tube uses Argon to prevent the filler wire from oxidizing prior to entering the weld pool. Even though the feed tube is slightly above atmospheric pressure it...
I have been told that copper contamination can be the cause of cracks in welds. Is this true? Is this specific to a type of metal? If it does cause cracks why is copper used so commonly around welded components? I.e., GTAW collets, GMAW contact tips and nozzles, pipeline backup shoes for the...
