Abstract: | When analysed in section, the stratum of plastically deformed material, shows that, no matter thewhay we realise the deformation of the thread the changes of structure occur on a longitudinal direction,transversal and cross the working surface. Plastic deformations are accompanied by a series of fenomenawhich lead almost totally to an improving of the caracteristics of the threading. In exchange, the elasticdeformations have negative impacts, especially for the production of the threads. Using the electroniccomputer, it was realised a diagram of the state of deformation in the sectionof a spiral of of the threadwhich can be used quantitatively and qualitatively for the analysis of the machanic characteristics of thethreads obtained by plastic deformation. |
