As quoted by industry, galling is a wear process which occurs when two metal surfaces contact each other during load and are placed in motion against each other causing friction. Galling is sometimes referred to as a cold-welding process, that can occur when the surfaces of male and female threads are placed under heavy pressure.
To read the full Valve World Americas September column, please contact Brittani Schroeder (b.schroeder@kci-world.com) for the PDF.