Titanium electroslag welding under electromagnetic influence on weld metal crystallization

The method of the influence on the process of electroslag welding (ESW), aimed at optimizing the structure of the weld metal, is considered. It is shown that external magnetic fields (MF), which allow non-contact force influence on the welding pool, are an effective tool to control metal crystallization during welding. Experimental data on the structuring of the weld metal during ESW of titanium plates with a thickness of 120 mm under the influence of a DC and pulsed transverse magnetic field are given. It was established that a pulsed MF by induction of 0.06 T allows us to homogenize and refine the metal structure of the weld while reducing the average size of the metal grains in 2.6 times, and increase in the specific elongation of the weld metal by 23% and the impact strength – by 19%.