The effect of laser beam pulse shape on the process of pulsed YAG laser welding

Abstract

We present the general characteristics of laser welding technology with the use of the radiation beam emitted in the pulse mode. The relationships between energy parameters of the pulse radiation beam are. We show that the pulse shape (i.e. defined course of power changes during pulse endurance) is one of the laser beam parameters affecting the welding process course, especially that in which thin precise elements are involved. By means of demonstration melting and welded joints of selected materials, the possibility of changing the weld shape and the manner of the weld metal crystallization through the application of different shape laser beam pulses is illustrated.