Abstract
The full-density consolidation of powders into net-shape parts yields high green strength, low shrinkage, short sinter times, superior mechanical properties, and low manufacturing costs. The conventional lowcost, single-press, single-sinter process typically densifies powders at less than 65 percent green density. This article describes the Magnepress™ process, a powder-processing technique wherein pulsed magnetic pressures consolidate powders into full-density parts without admixed lubricants or binders. The Magnepress technique is especially suitable for producing net-shape products with radial symmetry (e.g., rods, cylindrical parts with internal features, tubular shapes, and high aspect-ratio specimens).
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References
B. Chelluri and John P. Barber, U.S. Patents 5,405,574; 5,611,139; 5,639,797; and 5,611,230.
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For more information, contact B. Chelluri, IAP Research, 2763 Culver Avenue, Dayton, Ohio 45429-3723; (937) 297-3177; fax (937) 296-1114; e-mail bhanu@iap.com.
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Chelluri, B., Barber, J.P. Full-density, net-shape powder consolidation using dynamic magnetic pulse pressures. JOM 51, 36–37 (1999). https://doi.org/10.1007/s11837-999-0108-5
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DOI: https://doi.org/10.1007/s11837-999-0108-5