Research and development of TM13 high toughness submerged arc welding wire

The Ni3 based TM13 submerged arc welding wire was developed by optimizing the design of alloy composition. Submerged arc welding with matched agglomerated flux was carried out to get the deposited metal and the butt joint. The results indicated that the microstructure is mainly of acicular ferrite, grain boundary ferrite and ferrite side plates. The developed TM13 welding wire matched TMF105 flux can produce thick butt joints with good CTOD fracture toughness. And the developed welding wire can produce deposited metals of high low temperature toughness when the heat input varied from 22 to 36 kJ/cm.