Nickel alloys are able to be reliably joined by most processes of welding (except oxyacetylene and forge welding). Welding stainless steel is frequently compared to the process of welding nickel alloys. Although different processes exist, the most popular welding methods for processing nickel alloys are:
- Gas-tungsten Arc Welding (GTAW)
- Plasma Welding (PAW)
- Electroslag Welding (ESW)
- Shielded Metal Arc Welding (SMAW)
- Submerged Arc Welding (SAW)
When welding nickel alloys, there is no need for post-weld treatments. For other alloys, thermal or chemical treatments are needed to restore corrosion resistance entirely. Although treatments are not required, in some cases, a full-solution anneal can improve overall corrosion resistance. Depending on the specific requirements of the device, heat treatment may be necessary. Heat treating alloys helps to relieve stress on the fabricated structure. This allows the structure to avoid age hardening and stress-cracking.
When working with nickel, it is essential to keep the work-piece free from foreign materials. Oil, grease, and shop dirt can all be removed with vapor degreasing or using acetone solvents. Other cleaners, like methylene chloride, can be used to clean paints. For more information about acquiring nickel wire for welding, please reach out to us. We carry a full-line of nickel and copper alloys.