Induction hardened blade
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United States of America Patent
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May 28, 2013
Grant Date -
Aug 16, 2012
app pub date -
Apr 25, 2012
filing date -
Jul 8, 2005
priority date (Note) -
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Abstract
A method of manufacturing a blade including heating and quenching a coil of strip steel material to harden the material, heating the strip steel material to temper the material, grinding a first angle along an edge of the material, and subsequent to the grinding, re-hardening, for example by induction heating, the edge of the material.
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