Author

Cheah

Date of Award

4-2004

Degree Name

Master of Science

Department

Industrial and Entrepreneurial Engineering and Engineering Management

Department

Industrial and Manufacturing Engineering

First Advisor

Dr. Sam N. Ramrattan

Second Advisor

Dr. Mitchell J. Keil

Third Advisor

Dr. Steven E. Butt

Access Setting

Masters Thesis-Open Access

Abstract

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.

Included in

Manufacturing Commons

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