An Experimental Investigation On Metal Surface
Treatment By Means Of Diode Laser Beams
Author(s)
A. Paoletti
Abstract
Surface treatment of steel, for a higher wear resistance, is necessary in all
industrial branches that deal with steel. One of the most effective methods of
metal surface heat treatment is represented by laser hardening. In general,
compared to other techniques, laser hardening needs a much lower heat input
into the material. Compared with other conventional processes, diode laser
treatment allows us to obtain some advantages, such as minimum distortion in
the parts and selective hardening of specific areas of components. In this paper,
an experimental investigation on the surface thermal treatment of different steels
by means of a diode laser has been carried out. Experimental tests have been
performed on three types of steels, selecting different values of beam power and
workpiece speed. Hardness and micro-hardness measurements have been
executed on the treated samples in order to assess the influence of laser
machining parameters and of workpiece materials on the treatment process.
Experimental results have been compared with those obtained by using a monodimensional
thermal model. The morphology of the heat affected zone of the
specimens has been investigated by scanning electron microscopy.
Keywords: diode laser, surface treatment, surface hardening, laser treatment.
Keywords
Keywords: diode laser, surface treatment, surface hardening, laser treatment.
Related Book
Other papers in this volume
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