Pad welding a pure metal of the pulse laser nignt

Experimental proofs are presented illustrating the possibility of melting (overlaying, welding up) of a pure metal powder placed in a free state on the substrate surface, by means of the millisecond laser pulses. For the first time the mode of the pulse laser layer-by-layer melting out of pure Ni-powder with the particle size ranging from 160 to 200 μm was realized for obtaining of three-dimensional metallic moulds with the metal structure typical of a classical casting. The results obtained seem to open new horizons in developing new technologies for fabrication of micro-size functional 3D articles.