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This paper investigates the optimizationOptimizations of the binder jettingBinder Jetting process using gas-atomizedCo–Cr Co–Cr–MoMo(VI) ions (F75) powder. Various parameters including particle size distributionParticle Size Distribution (PSD), binder saturation, and recoating speed were systematically examined to understand their effects on green part densityDensity and flexural strength. Results demonstrated that increasing binder saturation significantly enhanced green densityDensity up to 56% and flexural strength up to 14 MPa. While increasing recoating speed negatively affected green densityDensity down to 47%, it had minimal influence on flexural strength, with a maximum variation of 10 MPa for all printing conditions. For the MIM-cut powder with finer PSD, the best printing condition was a binder saturation level of 100% and recoat speed of 80 mm/s. However, for the coarser PSD of LPBF-cut powder, the best printing condition was a binder saturation level of 80% and recoat speed of 80 mm/s. This is because exceeding optimal binder saturation values may compromise accuracy and lead to excessive binder consumption and prolonged debinding times. Broader PSDs contributed to higher green densitiesDensity and flexural strength.

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Printability and Green Mechanical Properties of Binder Jet Additive Manufactured Co–Cr–Mo Parts

  • 会议论文

  • 发表日期：

    2025年

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  • Mohsen Moradi,
  • Heidar Karimialavijeh,
  • Elie Bitar-Nehme,
  • Etienne Martin

摘要

This paper investigates the optimizationOptimizations of the binder jettingBinder Jetting process using gas-atomizedCo–Cr Co–Cr–MoMo(VI) ions (F75) powder. Various parameters including particle size distributionParticle Size Distribution (PSD), binder saturation, and recoating speed were systematically examined to understand their effects on green part densityDensity and flexural strength. Results demonstrated that increasing binder saturation significantly enhanced green densityDensity up to 56% and flexural strength up to 14 MPa. While increasing recoating speed negatively affected green densityDensity down to 47%, it had minimal influence on flexural strength, with a maximum variation of 10 MPa for all printing conditions. For the MIM-cut powder with finer PSD, the best printing condition was a binder saturation level of 100% and recoat speed of 80 mm/s. However, for the coarser PSD of LPBF-cut powder, the best printing condition was a binder saturation level of 80% and recoat speed of 80 mm/s. This is because exceeding optimal binder saturation values may compromise accuracy and lead to excessive binder consumption and prolonged debinding times. Broader PSDs contributed to higher green densitiesDensity and flexural strength.