Vpliv pretoka zraka pri gašenju profilov na mehanske lastnosti zlitin EN AW6060 in EN AW6063

Breznik, Jan (author), Fajfar, Peter (mentor), Cvahte, Peter (comentor)

V diplomski nalogi je raziskan vpliv pretoka zraka v procesu iztiskavanja na mehanske lastnosti in ravnost iztiskanih aluminijevih profilov zlitin EN AW 6060 in EN AW 6063. Za namen raziskave je bilo izbranih pet profilov različnih različnih dimenzij in oblik. Trije od teh profilov so izdelani iz zlitine EN AW 6060, dva pa iz zlitine EN AW 6063. Nastavitve pretoka zraka so bile opravljene ročno med samim procesom iztiskavanja. Ob tem smo zasledovali naslednje tehnološke parametre: temperatura iztiskanja, temperatura profila na izstopu ter hitrost iztiskovanja. Posebna pozornost je bila namenjena vplivu gašenja na ravnost profilov in tudi ovrednotena v diskusiji. Izdelani vzorci so bili poslani na nadaljne mehanske preizskave. Rezultati mehanskih preiskav so ovrednoteni in opisujejo kako pretok zraka vpliva na mejo tečenja, natezno trdnost, raztezek in trdoto iztiskanih profilov.

• Language: Slovenian
• Keywords: aluminijeve zlitine, gašenje, iztiskavanje, mehanske lastnosti, ravnost
• Work type: Bachelor thesis/paper
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Year: 2019
• PID: 20.500.12556/RUL-113273
• COBISS.SI-ID: 1850719
• Publication date in RUL: 18.12.2019

Secondary language

• Language: English
• Title: Effect of quenching with air on mechanical properties of EN AW6060 in EN AW6063 alloys profiles

Abstract

The following thesis investigates how the airflow in the extrusion process affects the mechanical properties and evenness of the extruded aluminum profiles of alloys EN AW 6060 and EN AW 6063. For research purposes, five profiles of different dimensions and shapes were selected. Three of these profiles were made from alloy EN AW 6060 and two from alloy EN AW 6063. The airflow settings were set up manually during the extrusion process itself. At the same time, we pursued the following technological parameters: extrusion temperature, exit profile temperatures and extrusion speed. Particular attention was given to the effect of quenching on the profile evenness and is further evaluated in the discussion section. The fabricated specimens were sent for further mechanical testing. The results of the mechanical tests are evaluated and show how the air flow affects the yield strength, tensile strength, elongation, and hardness of extruded profiles.

• Keywords: aluminum alloys, quenching, extrusion, mechanical properties, evenness