Method of machining using coated cutting tools

Details Method of machining using coated cutting tools Method of machining using coated cutting tools

1992-08-13

1994-07-05

Terrell, William E.

Turning

Process of turning

407119, B23B 100, B23B 2716

Patent

active

053257472

ABSTRACT:
Provided is a coated cutting tool having a coating and a substrate. The coating includes at least one CVD layer which may have a residual tensile stress and at least one layer having a high residual compressive stress. The outermost layer of the coating is preferably the one containing residual compressive stresses. The substrate is a composite having hard refractory grains. The cutting tool has been found to be particularly useful in the machining of titanium alloys and superalloys.

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