If we want to laser metal or ceramic powder on a coating substrate, without having a powder injection source, how should we do this? That is, how to stick the powder on the substrate and then pass the laser over it?
Dear Morteza
It totally depends on the thickness that you need. Using glue and removing it with low heat is a solution for medium thicknesses. If your laser power can create large thicknesses in a single pass, you can use pre-seating and curb edge restraint. Finally machinig the efges as removal treatment.
Dear Yazdan
Thank you for your good answer. What glue should I use? How to combine it with powder and put it on the surface? Does it need to be pressed?
Cold spraying can be used to preset powders. By adjusting the process parameters of cold spraying, different layer thicknesses and uniformity levels of preset powder layers can be obtained
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