|About this Abstract
||Materials Science & Technology 2011
||Processing, Microstructure and Properties of Cast Irons and Cast and Forged Specialty Steels
||Examining Hot Tear Initiation in Steel Casting with Trial Validation and Process Simulation
||Bob Puhakka, Sam Scott, Adi Sholapurwalla, Jianzheng Guo
|On-Site Speaker (Planned)
Much investigation and research has been devoted to the study and prediction of hot tearing in metal castings. Several experiments have been performed investigating the causes of hot tears, primarily involving variations in alloy composition, component/mold geometry and metal/mold temperature. However, as new information evolves regarding the detrimental role of entrained oxide bifilms resulting from common turbulent filling processes, a refocused investigation of the hot tear phenomenon is required. This study compares a stainless steel ring casting with known and traditionally expected hot tearing that was poured with a fill system not designed to minimize bifilm formation with the same component using a filling system designed per the new concepts. The casting trial will also be compared to simulation results, which will focus on the indication of both potential filling issues and hot tearing.
||Definite: A CD-only volume