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EIGA- An Innovative Production Method for Metal Powder from Reactive and Refractory Alloys

Publisher: ALD Vacuum Technologies, Inc.
Overview:
This paper highlights the benefits of Electrode Induction Melting Gas Atomization (EIGA) as an innovative production method for metal powder from reactive and refractory alloys. In the EIGA process, pre-alloyed rods in form of an electrode are inductively melted and atomized without any contact between the melted material and a crucible. The document describes the EIGA process, including its practical limitations in detail. It features graphical presentation of the schematic and working principle of the EIGA atomization system, incorrectly and correctly turned drip melt, the magnetic field of conical HF induction coil, and includes tabular presentation of the process data of EIGA system and material properties of feedstock material for EIGA test runs to support the thesis of the paper.
TABLE OF CONTENTS
1.Introduction1-2
2.Practical limitations of the EIGA process2-4
3.Development Program4
3.1Modeling4-5
3.2Experimental work5
3.3Results5-7
4.Conclusion and outlook7
5.Literature7
6.Figures
6.1Schematic and working principle of the EIGA atomization system2
6.2.1Incorrectly turned drip melt3
6.2.2Correctly turned drip melt3
6.3.1Magnetic field of conical HF induction coil4
6.3.2Resulting electrode temperature4
6.4Particle size distributions for EIGA atomization test runs6
7.Tables
7.1Process data of EIGA system2
7.2Material properties of feedstock material for EIGA test runs5
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