AFS Library

STUDY OF HIGH TEMPERATURE PROPERTIES OF SHELL MOLDS

2951
Journal: Transactions of the American Foundrymen's Society V 66 P 484-494, 1958 (11 p)
Author: Rabe, R A

A large percentage of the shell-mold casting scrap is due to shell cracking and shell expansion defects. This report covers work performed in cooperation with the AFS Shell Molding Materials Testing Committee (8-N) in order to determine the causes of such casting defects when various sand and resin mixes were used. Hot expansion and tensile strength tests of the shell mixes were performed in the laboratory in an attempt to correlate these tests with the expansion defects found in test pattern castings.



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