Abstract
This progress report of a continuing investigation describes the results obtained in a study of the gases formed during steel casting production in molds bonded with toluene sulfonic acid (TSA)-cured furan resin, phosphoric acid-cured furan resin, carbon dioxide-gassed sodium silicate, and carbon dioxide-gassed sodium silicate containing 20% sucrose. Future research will be concerned with determining the gases formed at the mold-metal interface during iron casting production, and with relating the casting surface quality to the nature of the gases formed.