Role of flux is as under; (Welding And Non Desructive Test) 1. During welding, the flux material decomposes and produces fumes. These fumes shield the molten weld pool from the atmosphere. read more
Basically underwater welding is done by two methods.Dry and Wet underwater welding. Dry underwater welding is moreover same like Shielded Metal Arc welding, which uses the flux in the electrodes for shielding purpose. Likewise the main use of flux coating in the wire in underwater welding is to produces gas bubbles which acts as a shielding gas in between water and the arc. read more
The main use of flux is to protect the molten metal pool from the atmospheric contamination . But apart from that in SMAW welding , Na ,K like law ionisation potential metals are added in flux of the electrode rod to increase the arc stability . Because these elements provide electrons easily which help arc to sustain . read more
How does Underwater Welding Work: Wet Welding Underwater dry welding may theoretically use any welding type that surface welders use. Underwater wet welding primarily uses shielded metal arc welding (SMAW). read more