New Two-Frequency Method and Devices for Electromagnetic Levitation Drip-and Leakage-Free Melting of Metals
A new method and devices for the electromagnetic levitation melting of metallic samples with greater weights and axisymmetrically stabilized positions is presented in this paper.The new method is applying two homogeneous magnetic fields of different frequencies,whose field lines are in absence of a charge horizontally and reciprocally normal in order to exert electromagnetic lift forces also on the axis of the levitated sample.Therefore the weight of the charge can be increased and the charge can be drip-and leakage-free melted.The method can be used in a melting furnace with or without a cold protective wall,as well as for the coreless induction valves applied for flow rate control,e.g.in the continuous casting of molten metals.The applicability of the method was experimentally examined and proved by tests conducted with three types of laboratory setups.
electromagnetic levitation melting two-frequency method leakage-free melting cold protective wall
PE（S）TEANU Ovidiu BAAKE Egbert
Institute of Electrotechnology,Leibniz Universit(a)t Hannover,Wilhelm-Busch-Str.4,D-30167 Hannover,Germany
国际会议
The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)
北京
英文
1-4
2012-10-22（万方平台首次上网日期，不代表论文的发表时间）