T. Bokelmann

Experimental setup for determination of absorption coefficient of laserradiation in molten metals as a function of temperature

Conference on Lasers in Manufacturing (LiM)
21.-24. Juni
Type: Konferenzbeitrag
For the process development of laser assisted double wire welding with nontransferred arc (LDNA), the simulation of the molten pool and its interaction with the laser radiation is of great importance. Therefore, an experimental setup for the determination of the temperature and angle dependent absorption coefficient of laser radiation in molten metals such as stainless steel will be presented. An Yb:YAG disc laser with 1030 nm is used as laser beam source. The stationary molten metal is inductively warmed and superheated by the laser beam with approximately 300-1000 W, whose radiation is shaped by homogenizing optics and ensures equal intensity when angle is adjusted.