راهنمای چدن داکتیل/Fcsc 9200

Des Plaines: American Foundrymen's Society, 1992. - 277 р. The ductile iron process is now a celebrated 40+ years old. In tha t time span, the technology ha s improved substantially, from the choice of raw materials to be melted, to techniques tha t confirm casting specifications. To a certain extent, credit for the advances in technology is due the pioneers of the process who were successful in handing down a valuable par t of thei r experience. More recently, tha t individual communication ha s continued, but we now benefit from a history of technical developments in ductile iron production tha t were well recorded in trade or research journal s in many languages. This new AFS Ductile Iron Handbook wasdeveloped to continue the communication process; to provide a comprehensive reference on specific aspect s of a growing foundry processes; and to provide a basic bibliography. Where i t was deemed appropriate to alert the reader to additional or, in some cases, contradictory information, we have inserted this information as an "Editors' Note," abbreviated "Ed. N." The author s for the chapter s of this handbook were selected for their known expertise and their established contributions to industry. These are some of the same foundrymen who have either presented paper s at AFS technical conferences or Congress technical sessions, or were member s of the audience, but in either case, facilitating the transfer of technology between sectors. Contents Theory of Solidification and Graphite Growth in Ductile Iron Engineering Properties, Specifications and Physical Constants of Specific Ductile Irons Production of Ductile Ni-Resist Composition of Ductile Irons Melting Practices for Ductile Iron Production Selection of Charge Materials Desulfurization Treatment Alloys and Materials Magnesium Treatment Methods Postinoculation Foundry Practices Influence of Section Size on Microstructure and Mechanical Properties Heat Treatment Ductile Iron Casting Defects Ductile Iron Process Control Welding