Abstract: The rapid heating from room
temperature to being melted and punctured in impure lead plates
of different diameter and thickness, irradiated by laser beams
at various power density, as to model the laser welding process,
are studied experimentally and numerically. A method for
predicting the temperature history is presented, which meets
with success in transforming the complex heat transfer problem
with movable solid-liquid phase boundary to one dealing the
transient heat conduction with considerations of variable
thermophysical properties. The experimental and numerical
results are summarized and well discussed.
Key words:
Metal Laser irradiation Melt Puncture
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The project
supported by the National Natural Science Foundation of China
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