pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (34권4호 123-129)
Thixo Extrusion and Reheating Characteristics of Semi Solid A356 Alloy
반응고 A356 합금의 재가열 특성 및 반용융 압출
Dae-Hwan Kim, Hyun-Ju Jung, Sung-Yong Shim, Su-Gun Lim*† and Sang-Yong Lee**
Gyeongsang National University, *Engineering Research Institute (Gyeongsang National University), **Jinju Campus of KOREA POLYTECHNIC
This work presents the results of a thixo-extrusion process applied to aluminum alloy and and reheating characteristics of semisolid A356 Alloy using have been discussed. The reheating experiment was performed using an electric resistance furnace and multistage heating for uniform reheating. The thixo-extrusion was performed at the optimal reheating conditions of the semi-solid A356 alloy, the the extrusion conditions were an extrusion ratio of 33 and ram speed of 6 mm/sec. The results showed that the thixoextrusion of semi-solid A356 alloy fabricated by the cooling slope reduced the extrusion pressure by 180% in comparison with hot extrusion, and that a sound extrusion could be obtained in spite of the same extrusion ratio and strain rate.
Cooling plate method, Reheating process, Semi-solid alloy, Thixo-extrusion
PDF