Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 27, 2023 - September 29, 2023
This paper reports on the vertical twin roll casting of aluminum alloy A7075. Aluminum alloy A7075 belongs to the highest strength alloys and its sheets are produced by rolling and extrusion. It is used in the aerospace industry and for special applications, but it has a high susceptibility to solidification cracking and is difficult to obtain sheets easily. Twin-roll casting can produce thin sheets directly from molten metal, making it possible to produce plates from alloys other than conventional sheet alloys. In this study, a new apparatus was designed and fabricated to conduct research under low speed and high pressure, which is more suitable for continuous casting of A7075 sheets than previous studies. The new apparatus is compact and has narrower roll widths, so that the load per unit width can be increased. The effects of roll speed on sheet continuity, surface properties, thickness, and microstructure were investigated.
