您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 4    August 2001

[PDF Download]    [Flash Online]

    

Mould filling ability and microstructure of aluminum
alloy under electromagnetic die casting
DING Hong-sheng(丁宏升), GUO Jing-jie(郭景杰), JIA Jun(贾 均),
BI Wei-sheng(毕维生), CHEN Li-jun(陈利军)

National Key Laboratory for Precision Hot Processing of Metals,
Harbin Institute of Technology, Harbin 150001, P.R.China

Abstract:In order to solve the mould filling problem of large thinwalled aluminum alloy castings effectively, a new casting technology called electromagnetic die casting has been developed. Emphasis has laid on studying the mould filling ability and microstructure under the mentioned method. The results show that the mould filling ability of A357 is increasing continually with the increasing of the input voltage, that is, the magnetic induction intensity. The pressure head of the molten metal increases from the lowest one at the input of the mould to the highest one at the end of the mould while in a conventional mould the pressure head depends invariably on the sprue height. Under electromagnetic die casting, the grains of A357 alloy are refined, and the pattern of eutectic silicon of alloy changes from rough plate to smooth strip.

 

Key words: cast aluminum alloy; magnetohydrodynamics; electromagnetic die casting; mould filling ability; microstructure

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn