Product Description
PaperID: 985
EventID: 12
Author: Sankar Bhattacharja, Ronald S. Doles, Michael A. Romba, Xuejun Wang, Nalco
Abstract:
In precision investment casting, the cleaning of wax patterns prior to investing in prime coat slurries is an important step in producing castings with a superior surface finish that is without defects. Solvents such as MEK, 1,1,1-trichlorethane and Freon® TF were widely used in the industry to remove surface contaminates from wax parts prior to shelling. Due to health, safety, and environmental factors, the industry was forced to move to relatively environmentally friendly cleaners such as citrus d-limonene. However, d-limonene still presents significant drawbacks, such as low flashpoints, the need to create and keep it in emulsion form, and shortages of raw materials that generate large cost fluctuations. This paper presents the work and methodology used to evaluate a new cleaner that has low volatility and eliminates the drawbacks noted above. Included in the paper is the methodology used to compare cleaners for their performance characteristics. In addition, quantitative analytical microscopy is used to take a closer look at how wax cleaners impact the wax surface.
Keywords: Wax, Pattern Materials & Pattern Making
Paper Pages: 15
Paper Year: 2014
Paper Index: 10:89
Paper Source: 81
