Article on Rocking3DMetal about metal powders

METAL POWDERS

Andrea Trentin - Division Technical Specialist of Legor Group Brazing Division
silver powder

In Laser Metal Fusion processes great attention must be paid in choosing the technology’s most suitable metal powder, to ensure the best quality standard of the final items.
Physical-chemical properties of the powder, such as chemical composition, size and shape of the particles, thermal conductivity, etc. play a fundamental role in regulating and modifying their behavior, not only during the layering phase, but especially during the laser’s light absorption/reflection phase.

These properties have to be joined with the expected mechanical properties of the desired item; acting mainly on the chemical composition of the powders, and on post-treatment heating, it is possible to modify the microstructure of the bulk material and then obtain the mechanical performance required for the proper use of the piece.

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