Influence of the geometry of aluminum profiles on the durability of dies used for their extrusion

摘要

In this work, the influence of the geometry of dies for extrusion of aluminum profiles on the amount of extruded material and durability of dies was analyzed. The dies that were provided for study were subjected to four- or five-fold gas nitriding and were exploited until they were finally worn out at the Albatros Aluminium company. In this article, an attempt was made to explain the influence of die geometry on the thickness of the nitrided layer, and thus, on the increase of their durability. Obtained results of studies made it possible to state that the amount of extruded material increases almost twice after the third nitriding and 2.5 times after the fourth nitriding, independently of the shape of the die. The die for extrusion of a flat-shaped profile made it possible to achieve a 2.5-fold increase of the amount of extruded material after only the third nitriding.