(大連理工大學(xué) 材料科學(xué)與工程系， 大連 116023)
摘 要: 為了研究熔體金屬電磁立柱成形能力并計(jì)算柱高度數(shù)學(xué)模型， 并試驗(yàn)驗(yàn)證了模型的準(zhǔn)確性。 利用液柱高度數(shù)學(xué)模型對(duì)鋁、 鋼、 錫鉛合金等金屬的電磁鑄造可行性， 以及電力參數(shù)對(duì)液柱高度的影響進(jìn)行研究。 結(jié)果表明： 鋁電磁無(wú)模成形能力最強(qiáng)， 而鋼及錫鉛合金電磁無(wú)模成形能力則基本相同； 鋼及錫鉛合金電磁立柱成形所需的磁感強(qiáng)度約為0.08~0.10 T， 而鋁則只需約0.04 T。
關(guān)鍵字: 電磁鑄造； 電磁成形； 液柱高度； 磁場(chǎng)強(qiáng)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
