Toplo kovanje Al-legura visoke čvrstoće

Abstract

U radu se navode osnovne karakteristike materijala i tehnologije toplog kovanje delova od Allegura. Za legure EN AW 2007 I EN AW 2024 ispitivana je mogućnost novog tehnološkog postupka livenja Al-legura pod dejstvom elektromagnetnog polja. Ovakav postupak omogućava modifikovanje mikrostrukture i poboljšanje mehaničkih osobinama odlivaka. Takođe, u radu se navodi i analiza kovanja u proizvodnim uslovima za leguru dobijenu istiskivanjem, uz pomoć odgovarajućeg SC.SuperForge softvera za 3D probleme. Kao primer, navode se rezultati distribucije ekvivalentnog napona u komadu koji se oblikuje u različitim fazama obrade.

The paper presents the basic properties of materials and technology of hot forging of Al-alloy parts. For alloys EN AW 2007 and EN AW 2024 the possibility of new technological procedure for casting Al-alloys under the influence of electromagnetic field was investigated. Such a procedure enables modification of microstructure and improvement of mechanical properties of ingots. In addition to that, the paper presents analysis of forging in manufacturing conditions for alloy obtained by extrusion with the application of suitable SC.SuperForge software for 3D problems. The obtained results show the equivalent stress distribution in work-piece which is being formed.