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<p>This paper documents a project in which a rotary degassing unit outfitted to perform periodic grain refinement treatments in A356 aluminum via a cleaning and grain refining flux was implemented into a continuous treatment well in a melting furnace, launder and holding/dipout well foundry floor plan. Study details will discuss the rationale for changing to a salt-based grain refiner/flux at the subject foundry. Moreover, this paper will document the process used to install the system and to verify the required cadence of grain refinement treatments. Finally, this paper will discuss the various benefits achieved during the first 2 to 3 months after implementation which include a reduction in grain refining spent of $276 per production day, an improvement in elongation from 4 to 5%, a slight improvement in tensile and yield strength(s) and a 10-fold reduction in average monthly impregnation costs from more than $1500 to less than $150 per month.</p>

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Degassing and Flux Grain Refining in a Continuous Treatment Well at Littlestown Foundry

  • 期刊论文

  • 发表日期：

    2026年4月30日

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  • B. Began,
  • J. Stonesifer

摘要

This paper documents a project in which a rotary degassing unit outfitted to perform periodic grain refinement treatments in A356 aluminum via a cleaning and grain refining flux was implemented into a continuous treatment well in a melting furnace, launder and holding/dipout well foundry floor plan. Study details will discuss the rationale for changing to a salt-based grain refiner/flux at the subject foundry. Moreover, this paper will document the process used to install the system and to verify the required cadence of grain refinement treatments. Finally, this paper will discuss the various benefits achieved during the first 2 to 3 months after implementation which include a reduction in grain refining spent of $276 per production day, an improvement in elongation from 4 to 5%, a slight improvement in tensile and yield strength(s) and a 10-fold reduction in average monthly impregnation costs from more than $1500 to less than $150 per month.