CASTING TECHNOLOGIES TO IMPROVE THE DIMENSIONAL ACCURACY OF THIN-WALLED IRON CASTINGS

20020236
Journal: Transactions of the American Foundry Society V 109 Paper No 01-113 P 1-10, 2001 (10 p)
Author: Jennings, J M; Griffin, J A; Bates, C E

When substantial numbers of parts are rejected, deliveries are delayed, machining time and costs are lost, and the product cost and lead-time is increased. The American Metalcasting Consortium (AMC), which is supported by The Defense Logistics Agency (DLA), the American Foundry Society (AFS), and selected foundries producing military castings has supported efforts to reduce foundry and machine shop scrap. In one of the project tasks, the University of Alabama at Birmingham (UAB) has worked with foundries producing military castings to implement casting technologies that will reduce casting rejects. Bulk density measurements and tests to measure mold binder content were performed on samples from fluidity spiral molds (70% silica/30% zircon), 100% zircon ring molds, and 70% silica/30% zircon ring molds.