Duplex stainless steel in the actual welding process, the quality of welded joints by many factors, including reasonable welding process is the premise of duplex stainless steel welded joints to guarantee the quality of specific welding of duplex stainless steel, the actual welding process methods and inter-layer temperature is the key to determine the reasonableness of the selected welding process. Through observation and analysis of the microstructure of different welding methods and interpass temperatures SAF2205 duplex stainless steel plate butt welded joints, suggesting that the performance of welded joints and welding process used to assess the adequacy to arrive at a reasonable welding process.
Experimental plates, wires and rods for Swedish the SANDVIK production of welding materials. GTAW  Welding Wire22.8.3L, its specifications quasi-2.4mm × 1000mm; the SMAW electrode for 22.9.3LR specifications quasi-3.2mm × 300mm. The chemical composition of the sheet metal and welding in Table 1. GTAW and SMAW butt plate joint shown in Figure 1. GTAW welding method using tungsten inert gas shielded arc Aluminium Welding Wirebase, one-side welding forming, and then using the wire filling and capping. SMAW is a manual arc welding, filling and capping.