January, 2019 | welding & NDT

Preheating – How, When and Why

Heating the base metal to a specific desired temperature before welding is called as preheating. The temperature at which the

Submerged Arc Welding (SAW) is an arc welding process in which arc is generated between a bare electrode and the

Flux cored arc welding (FCAW) is a welding process that uses the heat produced by an arc generated between a

High frequency sound waves (frequency > 20000 HZ) also known as ultrasonic waves are introduced in a test object through

SELECTION OF PROBE ANGLE: There are three methods for selecting a probe angle, these are: Based on groove angle: