Continuous Rotary Extrusion (CRE) of Flat Sections from 6063 Alloy
PBN-AR
Instytucja
Sieć Badawcza Łukasiewicz - Instytut Metali Nieżelaznych
Źródłowe zdarzenia ewaluacyjne
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Key Engineering Materials
ISSN
1662-9795
EISSN
Wydawca
Trans Tech Publications Inc.
DOI
Rok publikacji
2015
Numer zeszytu
Strony od-do
183-189
Numer tomu
641
Link do pełnego tekstu
Liczba arkuszy
0,25
Słowa kluczowe
en
continous rotary extrusion
flat sections
6063 alloy
Streszczenia
Język
en
Treść
The study relates to a process of continuous rotary extrusion (CRE), also known under the name of a Conform Process. This method is used more and more extensively for the plastic working of metals and alloys. In CRE, the feedstock is fed into a profiled groove on the rotating extrusion wheel and is pressed by the pressing wheel. The friction of the extruded material against the rotating wheel generates a force that is pushing the material into the deformation chamber followed by extrusion through the die orifice. The extrusion by CRE was performed on an MC-260 device supplied by Meltech-Confex and installed at IMN - OML for processing of the 6063 aluminium alloy. The feedstock was composed of annealed rods. Two parameters were controlled during extrusion: the temperature of the shoe (element of the housing pressing the extruded material to the wheel) and the speed of the driving wheel. The 6063 alloy was extruded using the wheel speed of 2, 5, 10 and 15 rpm and the shoe temperature of 90°C and 105°C. The extruded flat sections were examined visually for continuity and quality of the resulting surface. In the feedstock rod and in the extruded flat sections (before and after heat treatment), the microstructure and grains were examined by light microscopy. Mechanical properties were also determined (static tensile test and hardness measurement). The study shows how the structure and the mechanical properties of the extruded flat sections are changing depending on the extrusion parameters applied. From the 6063 alloy rods extruded by CRE, flat sections of satisfactory quality were obtained. It was found that CRE yields the highest mechanical properties combined with the correct structure and high surface quality when the feedstock is extruded with the wheel rotational speed of 10 rpm and the shoe temperature of 105°C
Cechy publikacji
original-article
Inne
System-identifier
629824
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