Melt Flow Measurement Inside The Keyhole During Laser Welding

Lesson 5 of 9 • 0 upvotes • 9:56mins

Abhinandan Kumar

Laser welding is usually categorized into two different modes; a. conduction welding with a low power density, and b. keyhole welding, where a high power density evaporates a deep cavity or ‘keyhole’ in the material. The main goal of this section is to present quantitative measurements of the downward flow on the keyhole front. The increase in downward flow with increasing laser power resulted in the well-known phenomenon of humping.