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7282 |
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Thursday, May 05, 2022, Hall D 3:40 PM Cold Gas Spraying II |
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Perspective of near-net-shape additive manufacturing by cold spraying: an empirical study using a high-pressure deposition of +45-15?m of Al-1050 powders
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MOHAMED Sokore* / Université de Technologie de Belfort-Montbéliard, CNRS, ICB , France SIHAO Deng / UTBM, RIJA-NIRINA Raoelison/ UTBM, Hanlin Liao/ UTBM, France Hongjian Wu/ UTBM, France |
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Cold Spray is a solid-state Additive Manufacturing process of 3D near-net-shape parts which requires the implementation of a good spraying strategy and the choice of the right operating parameters. This paper is the result of empirical studies on the determination of the optimal processing conditions (spraying and kinematics) for the Cold Spray Additive Manufacturing (CSAM) of pure Al powder using a stable layers building strategy. Vertical 3D deposits (thick walls) with a height and thickness of 13 -100 mm and 5 - 11mm respectively were obtained through a series of tests that consider an effect of some kinematic parameters. Then, the optimized parameters enabled the building of a complex 3D part. The visual analysis of the deposits shows that the nozzle traverse speed as well as the number of passes mid-edge ratio constitute the two most influential parameters on the final shape of the deposits (flatness and straightness). All these results prove the potential of the Cold Spray Additive Manufacturing (CSAM) process as fast 3D additive method using micron sized powders, and particularly for Al powder. Keywords: cold spraying, additive manufacturing, 3D near-net-shape forming, Aluminium |