A Predictive Electrochemical Model for Weld Metal Hydrogen Pickup in Underwater Wet Welding A Predictive Electrochemical Model for Weld Metal Hydrogen Pickup in Underwater Wet Welding Introduction Underwater wet welds pick up hydrogen from the surrounding water. Hydrogen is detrimental to weld metal integrity because of HAZ cracking and weld metal microfissuring. Methods to minimize hydrogen pickup include flux composition modification and hydrogen gattering.
Electrochemical reactions determine hydrogen pickup in underwater wet welds.