Date of Award
Master of Science
Industrial and Entrepreneurial Engineering and Engineering Management
Industrial and Manufacturing Engineering
Dr. Sam N. Ramrattan
Dr. Mitchell J. Keil
Dr. Steven E. Butt
Masters Thesis-Open Access
This research study examines the effects of refractory coatings on a shell sand using laboratory testing equipment as opposed to the more laborious and time consuming processes of molding, melting, filling, shakeout, and obtaining dimensions of actual castings. As of today, there have not been any such laboratory test methods. This research project focused on quantifying distortion, mass change, and impact strength found in refractory coated shell sand. The equipment used was the thermal distortion tester (TDT) and a modified impact tester. The thermal distortion curves (TDC), mass change, and impact strength are provided and compared for all systems studied. The results from thermal distortion testing show that refractory coatings reduce distortion in sand cores and molds. The refractory coatings also prevent sand/binder losses and expansion defects. Finally, the refractory coatings did not affect the shakeout/collapsibility of the sand system.
Cheah, Suet Fong, "Comparing Refractory Coatings on Shell Sand Utilizing Elevated Temperature and Collapsibility Testing" (2004). Master's Theses. 4958.