Evolution of substrate temperature during nozzle movement under cold gas spraying conditions
S.V. Klinkov, V.F. Kosarev, V.S. Shikalov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: cold gas spraying, heat transfer, surface temperature, nozzle velocity
Abstract
Results of a study of the evolution of substrate temperature during nozzle movement under cold gas spraying conditions are reported. A model for calculating the substrate temperature is proposed and verified. Calculated data for typical ranges of nozzle velocity, substrate thickness, and initial substrate temperature encountered in the spraying practice, were obtained. It is shown that there exists an optimum initial substrate temperature at which the variation of temperature in the spray spot proves to be minimal.
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