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TECHNICAL PAPERS

Magnetic Field Effects in Machining Processes and on Manufactured Part Mechanical Characteristics

[+] Author and Article Information
Mohamed El Mansori1

Laboratoire de Mécanique et Procédés de Fabrication (LMPF, JE2381), Ecole Nationale Supérieure d’Arts et Métiers, Rue Saint Dominique, BP 508, 51006 Châlons, FranceMohamed.elmansori@chalons.ensam.fr

Barney E. Klamecki1

Department of Mechanical Engineering, University of Minnesota—Twin Cities, 111 Church Street, SE, Minneapolis, MN 55455-0111klamecki@me.umn.edu

1

To whom correspondence should be addressed.

J. Manuf. Sci. Eng 128(1), 136-145 (Jul 20, 2005) (10 pages) doi:10.1115/1.2113007 History: Received February 23, 2004; Revised July 20, 2005

A review of research results demonstrating that magnetic fields applied to machining processes and mechanically manufactured parts can have beneficial effects is presented, an explanatory mechanistic model is described, and the model is used to interpret some results. The magnetic field-material interaction model shows an exponential dependence of material behavior and mechanical property changes on applied field strength and material magnetostrictive characteristics. Implications for use of magnetic fields to manipulate tribological processes, control machining processes, and alter material properties are that low field strengths can be useful for treating materials that have large magnetostrictive stain and high magnetic saturation level.

FIGURES IN THIS ARTICLE
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Copyright © 2006 by American Society of Mechanical Engineers
Topics: Magnetic fields , Wear
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References

Figures

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Figure 1

High speed steel tool durability ratio for varying magnetic field and cutting speed (31)

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Figure 2

SEM photomicrographs of worn high speed steel cutting tools after machining with (a) no applied magnetic field and (b) with applied field of 4.8E4A∕m(32)

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Figure 3

Tool life as number of holes drilled before drill failure for magnetic treatment of drill only and drill and workpiece (34)

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Figure 4

Wear measured as weight loss of steel/steel sliding couples for varying applied magnetic field strength (30-31)

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Figure 5

Pin wear shown as percent reduction of wear rate for steel/steel sliding couples for varying magnetic field and normal load (30-31)

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Figure 6

Wear particle size distributions for varying magnetic field and sliding length (30)

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Figure 7

Extent of oxidation of sliding surfaces for varying magnetic field, temperature, and time (36)

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Figure 8

Average values of microhardness test indentation size in replicate tests for three test loads and three specimen initial stress levels for untreated and treated shot peened specimens (39)

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Figure 9

Magnetostrictive effect of magnetic field causing strain (43)

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