Authors:
Yuri Chivel (MerPhotonics, France)
Abstract:
Laser cladding process with powder or wire should be an outstanding performer in additive manufacturing The new approach in selective laser cladding using conical laser beams has been elaborated. Initial circular laser beam is divided into two annular beams with regulated distribution of the laser power throughout the annular beams. Annular beams are transformed to conical beams , which are focused separately on the surface and on the deposited material for heating. The laser energy delivery to powder stream is very efficient because a total uniform absorption of laser energy in the dense powder stream ( 104-105 1|cm3). Under wire deposition the heating of substrate reduces the residual stresses due the reduction temperature gradients and compensates heat losses from deposition zone. The power density for melt contact formation is significantly reduced as well as dissolution, while increasing accuracy. The optimal regimes of laser cladding can be achieved using new approach.
DOI:
https://doi.org/10.59499/WP225371765