Research and Applications of Semi-solid Processing  

作　　者：Kui Zhang, Jun Xu, Likai Shi, Daijin Cui, Yuxin Zheng (General Research Institute for Nonferrous Metals, Beijing 100088, China Dongfeng Motor Corp., Shiyan 442001, China) 

出　　处：《Rare Metals》2001年第2期74-77,共4页稀有金属（英文版）

基　　金：This Work financially supported by the China National Advanced Materials Committee

摘　　要：It has been more than ten years since the semi-solid processing (SSP) technique was put into commercial applications in the world. A lot of work on semi-solid metals (SSM) including their preparation, reheating and semi-solid forming has been done in China. In order to produce the high quality die-casting, a novel innovation that modifies the present machines based on the SSP technique was proposed. Semi-solid die-casting on modified casting machines can manufacture parts with more excellent quality than those produced by squeeze casting. It was found that the defects such as 'elephant foot' and 'periphery liquid metal loss' during reheating could be avoided through controlling the non-dendritic structure of billets and optimizing the reheating process. The processing parameters and mold designs of semi-solid die-casting are fairly different from those of liquid die-casting.It has been more than ten years since the semi-solid processing (SSP) technique was put into commercial applications in the world. A lot of work on semi-solid metals (SSM) including their preparation, reheating and semi-solid forming has been done in China. In order to produce the high quality die-casting, a novel innovation that modifies the present machines based on the SSP technique was proposed. Semi-solid die-casting on modified casting machines can manufacture parts with more excellent quality than those produced by squeeze casting. It was found that the defects such as 'elephant foot' and 'periphery liquid metal loss' during reheating could be avoided through controlling the non-dendritic structure of billets and optimizing the reheating process. The processing parameters and mold designs of semi-solid die-casting are fairly different from those of liquid die-casting.

关 键 词：semi-solid processing Al-Si alloy automotive component die casting 

分 类 号：TG249[金属学及工艺—铸造]