Advances in Production Engineering & Management
Volume 8 | Number 1 | March 2013 | pp 52–60
http://dx.doi.org/10.14743/apem2013.1.153
Influence of laser welding process parameters on weld pool geometry and duty cycle
Tadamalle, A.P.; Reddy, Y.P.; Ramjee, E.
ABSTRACT AND REFERENCES (PDF) |
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A B S T R A C T
In pulsed Nd:YAG laser welding process, the material melts and solidifies consecutively
by a peak high power laser beam. The solidification time in this
process is very less as compared to that of conventional welding process. The
mode of welding process is governed by the process parameters like laser
energy, pulse duration, pulse frequency, power and welding speed. This paper
aimed at to examine the influence of welding speed and power on weld bead
geometry and performance parameters such as duty cycle, pulse overlap,
energy density and bead diameter. In this contest, first experiment is conducted
on austenitic 304L stainless steel sheet by varying the welding speed
from 2 mm/s to10 mm/s and second experiment is conducted varying laser
power from 300 W to 3500 W. It was found from the experimental and analytical
approach welding speed and laser power significantly affects on weld
bead geometry, variation in bead diameter from pulse to pulse, duty cycle and
effective pulse energy.
A R T I C L E I N F O
Keywords • Duty cycle, Pulse overlap, Effective pulse energy
Corresponding author • Tadamalle, A. P.
Published on-line • 29 June 2013
E X P O R T C I T A T I O N
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