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Optimal design of a novel cold spray gun nozzle at a limited space

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Abstract

Numerical analysis for the accelerating behavior of spray particles in cold spraying is conducted using a computational fluid dynamics program, FLUENT. The optimal design of the spray gun nozzle is achieved based on simulation results to solve the problem of coating for the limited inner wall of a small cylinder or pipe. It is found that the nozzle expansion ratio, particle size, accelerating gas type, operating pressure, and temperature are main factors influencing the accelerating behavior of spray particles in a limited space. The experimental results using the designed short nozzle with a whole gun length of <70 mm confirmed the feasibility of optimal design for a spray gun nozzle used in a limited space.

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Authors and Affiliations

  1. LERMPS-UTBM, Sité de Sévenans, 90400, Belfort-Cedex, France

    Wen-Ya Li

  2. State Key Laboratory for Mechanical Behavior of Materials, Welding Research Institute, School of Materials Science and Engineering, Xi’an Jiaotong University, 710049, Xi’an, Shaanxi, Peoples Republic of China

    Chang-Jiu Li

Authors
  1. Wen-Ya Li
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  2. Chang-Jiu Li
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Li, WY., Li, CJ. Optimal design of a novel cold spray gun nozzle at a limited space. J Therm Spray Tech 14, 391–396 (2005). https://doi.org/10.1361/105996305X59404

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  • DOI: https://doi.org/10.1361/105996305X59404

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