71st ANNUAL TECHNICAL IN INVESTMENT CASTING 2024 Best Presentation Award: Carel Wegman of Ransom & Randolph, LLC


This article was awarded the Best Presentation at the 71st Annual Technical Conference & Exposition. The recipient of this award, Carel Wegman of Ransom & Randolph, LLC was selected on the basis of audience survey responses, as well as ICI Technical Committee judgement.


Slurry Formulation and the Impact They Have on Drying Times/Cost


by Mike Hendricks (USA), Dave Berta (USA), Bastian Schulte (Germany), Carel Wegman (the Netherlands) Ransom & Randolph, LLC


Abstract


ventilators) consume energy. Reductions in dry time could certainly lead to process time savings but would also mean less energy consumption. To improve sustainability of the IC industry all factors influencing dry times would be of interest. When drying shell coats, factors like humidity, airflow and, to a lesser extent, temperature have been considered. This paper will take a different approach to drying and explore how the


D 18 ❘ November 2024 ®


rying of investment casting shells during dipping is a critical and necessary step in the process. The involved equipment (air conditioning, dehumidifiers,


slurry formulation itself can impact the time required to dry ceramic shells during the shell building process. We will examine how slurry factors such as particle size, refractory content, binder content and other slurry components such as polymer and fiber impact drying of shell coats. This information may allow a foundry to make modifications to their slurry to reduce their dry time while at the same time reducing their energy consumption.


If you would like to read this paper in its' entirety, visit www.investmentcasting.org.


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