(大连理工大学 材料科学与工程系， 大连 116023)
摘 要: 为了研究熔体金属电磁立柱成形能力并计算柱高度数学模型， 并试验验证了模型的准确性。 利用液柱高度数学模型对铝、 钢、 锡铅合金等金属的电磁铸造可行性， 以及电力参数对液柱高度的影响进行研究。 结果表明： 铝电磁无模成形能力最强， 而钢及锡铅合金电磁无模成形能力则基本相同； 钢及锡铅合金电磁立柱成形所需的磁感强度约为0.08~0.10 T， 而铝则只需约0.04 T。
关键字: 电磁铸造； 电磁成形； 液柱高度； 磁场强度
electromagnetic casting and its application
（ Department of Materials Science and Engineering,
Dalian University of Technology,
Dalian 116023, China）
Abstract: In order to calculate the liquid-column height and estimate the feasibility of electromagnetic casting, a mathematical model of the liquid-column height was established and some experiments were carried out to prove the validity of the model. The effects of the parameters(magnetic intensity and frequency) on the liquid height and on the feasibility of electromagnetic casting were studied by the application of the mathematical model in aluminum and Sn-3%Pb alloy. The results show that the magnetic intensity required for steel and Sn-3%Pb alloy to achieve electromagnetic casting should not be less than 0.08-0.09 T, while the magnetic intensity for aluminum to achieve electromagnetic casting is only about 0.04 T.
Key words: electromagnetic casting; mathematical modeling; liquid-column height; magnetic intensity
