EFFECT OF PROCESS FEATURES OF PRESSURE TREATMENT ON THE MICROSTRUCTURE AND QUALITY OF PARTS OF PIPELINE FITTINGS FROM HIGH-STRENGTH CAST IRON

摘要

Methods of form changing of parts from high-strength cast iron with globular graphite by plastic deformation aimed at widening the possibilities of forming the required structure and properties in the metal and the range of its application are considered. Processes for obtaining semiproducts from high-strength cast iron with the help of form-changing and separating operations are described. Results of analysis of the microstructure and hardness of the initial preforms and of the semiproducts obtained are presented.