A new penetration control approach for application to varying root thickness

摘要

The influence of plate thickness on the penetration in GTAW has been investigated and a front pool width penetration control approach has been studied, which controls the penetration under the variation of plate thickness. A theoretical hat flow model for a plate of a finite thickness has been utilized to investigated the relationship of the pool widths on both sides. A penetration control system for autogenous GTA welding has been utilized which uses a coaxial weld pool imaging system and com- puter vision processing to sense the width of the GTA weld pool.