Numéro
J. Phys. IV France
Volume 04, Numéro C4, Avril 1994
3rd International Conference Laser M2P
Page(s) C4-179 - C4-182
DOI http://dx.doi.org/10.1051/jp4:1994440
3rd International Conference Laser M2P

J. Phys. IV France 04 (1994) C4-179-C4-182

DOI: 10.1051/jp4:1994440

Investigation of welding depth with overlapping laser pulses

T. DASCALU, V. LUPEI, N. PAVEL and C. NEAGU

Institute of Atomic Physics, IFTAR-MALIRM, P.O. Box 5206, Bucharest 76900, Romania


Abstract
Laser processing has became a valuable alternative to classical techniques in a large variety of technical applications : cutting, drilling, welding, etc. The development of laser metal processing techniques need a deep understanding of the basic physical phenomena, like temperature distribution and its evolution in a target during laser metal interaction. The heat conduction equation have been solved using a numerical method and the results are compared with penetration weld data obtained on tantal and stainless steel targets irradiated by a Nd:YAG laser with variable pulse width. Depending by pulses parameters (duration, rate of repetition, peak power, pulse-shape) and pulses overlapping the depth of weld has been investigated.



© EDP Sciences 1994