Title :
Design and analysis of a linear type electromagnetic stirrer
Author :
Milind, S. ; Ramanarayanan, V.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
Electromagnetic stirring (EMS) of metallic alloys is mainly used to refine the grain structure of castings. This technique results in increased homogeneity of the cast alloys. In this paper a design oriented approach to a linear electromagnetic stirrer is presented. A mathematical model of such a stirrer is proposed to obtain electromagnetic field solutions. The field solutions so obtained are compared with those obtained from the finite-element model. The influences of excitation frequency and current on the induced current density and axial force and their variation with radius have been investigated. Experimental results obtained from a prototype are presented.
Keywords :
alloys; casting; electromagnetic devices; electromagnetic fields; finite element analysis; grain refinement; grain size; mathematical analysis; axial force; castings; electromagnetic field solutions; electromagnetic stirring; excitation current; excitation frequency; finite-element model; grain structure; induced current density; linear electromagnetic stirrer; metallic alloys; Casting; Current density; Electromagnetic analysis; Electromagnetic fields; Electromagnetic forces; Finite element methods; Frequency; Mathematical model; Medical services; Prototypes;
Conference_Titel :
Industry Applications Conference, 2004. 39th IAS Annual Meeting. Conference Record of the 2004 IEEE
Print_ISBN :
0-7803-8486-5
DOI :
10.1109/IAS.2004.1348407
