Stainless Steel Welding Consumables Introduction—Submerged Arc Welding (SAW)

1.Welding Consumables Selection and Recommendation：

  There is no particular regulation in AWS for the stainless steel SAW as it is judged and specified according to AWS A5.9 for the wire.

2.Welding Operation Points：

(1)Storage Management：

Relevant to storage management, please refer to the instructions of SAW in carbon steel.

(2)Welding Precausion：

①Heat input should not be overheated for SAW, in order to avoid the weld cracking and carbide formation that of reducing the corrosion resistance.

 

②When use SAW for the bottom welding, the setting of the welding conditions should be paid attention to the issue of the excessive dilution for the weld alloy content reaching the expected setting. The welding condition, formation, and penetration may refer to the material selection and recommendation of SAW.

 

③Stainless steel band welding is mainly classified into SAW and ESW. The SAW welding is melting the band by arc, and whereas the ESW is melting the slags. Deeper penetration, higher dilution rate and welding speed are the features of SAW, but the weld flatness for ESW.

 

④SAW is using DC electricity for welding but the phenomenon of arc blow is easily caused to affect the weld deviation and the edge of toe. It is required to check the ground connection that connects to each side of the workpiece at least, the longer workpiece recommends more ground connections.

 

⑤The rest, refer to the precautions of stainless steel submerged arc welding and covered electrode.