Method for toughening surface of sintered material cutting...

Details Method for toughening surface of sintered material cutting... Method for toughening surface of sintered material cutting...

2008-01-22

2008-01-22

Lorengo, J. A. (Department: 1755)

Abrasive tool making process, material, or composition

With inorganic material

Reexamination Certificate

active

07320716

ABSTRACT:
A ceramics sintered material cutting tool, characterizing in that it has a dislocation structure which formed on the surface thereof in a straight line from and distributed uniformity in a dislocation density of 1×104to 9×1013cm−2. The cutting tool is improved in a fracture toughness value and the resistance to thermal shock and thus has a prolonged life. The above cutting tools include, in particular, a twist drill and a throw away tip.

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patent: WO 02/24605 (2002-03-01), None

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