HEAT TREATMENT OF DUCTILE CAST IRON TUBE MADE BY CENTRIFUGAL CASTING

摘要

PURPOSE:Ductile cast iron tube, which is casted centrifugally and in red state, is cooled slowly with metal frame by the utilization of the self-holded heat, and annealed. Thereby, fuel is saved substantially, the contribution to energy saving and decrease of environmental pollution are made possible.