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<p>In the casting process of 1060 industrial pure aluminum, the inclusions in the aluminum melt significantly affect the product quality. In this study, the influence of refining temperature and the composition of salt fluxes on the purification effect and mechanical properties of aluminum melt was investigated. The results indicate that lower refining temperatures and modified salt fluxes can effectively enhance the cleanliness of the aluminum melt. As the refining temperature increases, the large inclusions gradually increase. The addition of 16wt.% Na<sub>3</sub>AlF<sub>6</sub> can dissolve and break up Al<sub>2</sub>O<sub>3</sub> inclusions, facilitating the separation of the aluminum melt and aluminum slag. The addition of 16wt.% Na<sub>3</sub>AlF<sub>6</sub> and 2wt.% CaCO<sub>3</sub> to the basic salt fluxes enables gas refinement, thereby further improving the cleanliness of the aluminum melt. Under the refining condition of 37wt.% NaCl-47wt.% KCl-16wt.% Na<sub>3</sub>AlF<sub>3</sub>-2wt.% CaCO<sub>3</sub> at 740 °C, better cleanliness and mechanical properties were obtained. The cleanliness and yield strength are approximately 99.99928% and 71.46 MPa, respectively. This work can offer valuable reference and theoretical insights for future research.</p>

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Investigating inclusions and mechanical properties of 1060 aluminum by salt fluxes refining

  • 期刊论文

  • 发表日期：

    2025年12月11日

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  • Jing-feng Wang,
  • Yao-heng Qiu,
  • Chao-yi Chen,
  • Lin-zhu Wang,
  • Jun-qi Li

摘要

In the casting process of 1060 industrial pure aluminum, the inclusions in the aluminum melt significantly affect the product quality. In this study, the influence of refining temperature and the composition of salt fluxes on the purification effect and mechanical properties of aluminum melt was investigated. The results indicate that lower refining temperatures and modified salt fluxes can effectively enhance the cleanliness of the aluminum melt. As the refining temperature increases, the large inclusions gradually increase. The addition of 16wt.% Na3AlF6 can dissolve and break up Al2O3 inclusions, facilitating the separation of the aluminum melt and aluminum slag. The addition of 16wt.% Na3AlF6 and 2wt.% CaCO3 to the basic salt fluxes enables gas refinement, thereby further improving the cleanliness of the aluminum melt. Under the refining condition of 37wt.% NaCl-47wt.% KCl-16wt.% Na3AlF3-2wt.% CaCO3 at 740 °C, better cleanliness and mechanical properties were obtained. The cleanliness and yield strength are approximately 99.99928% and 71.46 MPa, respectively. This work can offer valuable reference and theoretical insights for future research.