Apparatus for induction hardening

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United States of America Patent

PATENT NO 9920392
SERIAL NO

14630706

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An apparatus for magnetic induction hardening of a workpiece includes a magnetic tool having a body portion formed of a generally non-magnetic material. The body portion has a surface configured to be positioned in close proximity to the workpiece being hardened. The apparatus further includes a magnetic arrangement coupled to the body portion at or adjacent the surface of the body portion and configured to provide regions of alternating polarity. A workpiece holder is configured to support the workpiece in close proximity to the surface of the magnetic tool. A drive arrangement for rotating the magnetic tool relative to the workpiece holder about an axis of rotation is provided to induce heating of the workpiece to achieve a temperature in the austenitic range of the workpiece resulting in hardening of the workpiece through a microstructural transformation.

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Patent Owner(s)

Patent OwnerAddress
THE TIMKEN COMPANY4500 MT PLEASANT ST NW NORTH CANTON OH 44720

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fitch, Stephen B Massillon, US 6 28
Gadus, John Richfield, US 3 27
Johnson, Stephen P North Canton, US 21 347
Mills, Jerry Massillon, US 10 133
Stuehr, William North Royalton, US 5 27

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