Underwater Shielded Metal Arc Welding Electrodes.
Commercial manufacturers have made significant progress in the development of waterproofing systems for wet welding electrodes. Details of these systems are proprietary to each manufacturer; however, the results of their cumulative efforts have produced a new generation of wet welding electrodes. Certain electrodes are manipulative types for use in all positions. With the correct welding procedures and equipment, weld deposits display excellent bead appearance and improved mechanical properties.
Shielded Metal Arc Welding Electrode Polarity.
Wet welding is usually conducted using STRAIGHT POLARITY, sometimes referred to as DC ELECTRODE NEGATIVE, which results in longer life of the electrode
holder. While straight polarity, electrode negative is the traditional method, this is by no means a hard and fast rule. Occasionally, more successful results may be obtained using reverse polarity, DC ELECTRODE POSITIVE.