| Abstract: | The paper discusses the selected technological and material problems of closed‐die forging of PM steel preforms. The first part presents technological variants of hot forging routs of PM materials. In the second part the influence of hot forging parameters on the density, mechanical properties and structure are discussed. The influence of the size of powder particles, powder manufacturing method, chemical composition and heat treatment conditions on mechanical properties after forging is shown. The research on thermomechanical forging of PM preforms has resulted in potential possibilities of shortening of the manufacturing route to obtain products with high density and good mechanical properties from one heating before forming. |
