Abstract
To produce magnesium alloy covers reinforced with ribs at a lower load, a new forging process, in which thin plates made of magnesium alloy are partially compressed using a servo press, is proposed. In this study, the features of the forming process are investigated by carrying out forging tests on the thin plates under various conditions. The ribs are simply formed at the back of the cover using the proposed process, but the contraction is generated at a place where two ribs intersect on the face of the cover. It is clarified that covers having a flat and smooth surface with no contraction are produced using the compressive process with a restriction in the height of the ribs. These results suggest the effectiveness of the proposed forging process.
