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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 18    No. 1    January 2008

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Preparation of casting alloy ZL101 with coarse aluminum-silicon alloy
YOU Jing(尤 晶)1, WANG Yao-wu(王耀武)1, FENG Nai-xiang(冯乃祥)1, YANG Ming-sheng(杨明生)2

1. School of Materials Science and Metallurgy, Northeastern University, Shenyang 110004, China;2. Dengfeng Electric Group Aluminum Alloy Corporation, Dengfeng 450013, China

Abstract:The coarse Al-Si alloy produced by carbothermal reduction of aluminous ore contains 55% Al, 25% Si and some impurities. The main impurities are slag and iron. The process of manufacturing casting Al-Si alloy ZL101 with the coarse Al-Si alloy was studied. The phase constitution and microstructure of the coarse Al-Si alloy, slag and ZL101 were examined by X-ray diffractometry and scanning electron microscopy. The results show that the content of silicon and iron in the casting alloy reduces with the increase of the dosage of purificant and manganese, but increases with the rise of filtering temperature. It is found that casting Al-Si alloy conforming to industrial standard can be produced after refining by using purificant, and removing iron by using manganese and added magnesium.

 

Key words: coarse Al-Si alloy; casting Al-Si alloy; flux refining; removing iron

ISSN 1672-7029
CN 43-1423/U

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