Centrifugal casting of aluminum alloys as a method for obtaining semi-finished products with an increased set of properties for space technology products

The present research is dedicated to the effect of centrifugal casting on the mechanical properties of deformable semi-finished products made of aluminum alloys of the Al – Zn – Mg – Cu and Al – Mg systems for space technology products. The study was carried out on sheets with a thickness of 3 mm and a rolling ring with a thickness of 10 mm. The samples were obtained from annular cast blanks measuring 350/240 mm (outer/inner diameter), cast by centrifugal casting. Hardness measurements were carried out along the width of the cast ring. The measurement result showed that the hardness values practically do not change over the entire width, except for the zone at a distance of 5 – 7 mm from the inner edge of the ring. In this zone, the hardness values decrease sharply. It is determined that deformed semi-finished products obtained from blanks cast by centrifugal casting have minimal anisotropy of strength properties. The level of properties of the rolling ring of the Al – Mg alloy system exceeds the properties of similar products manufactured using standard technologies. The proposed technology for manufacturing solid-rolled rings from blanks obtained by centrifugal casting will not only increase the reliability of products with a significant reduction in labor intensity, but also reduce their weight by increasing mechanical characteristics.