Method of manufacturing cemented carbide cutting tool and cutting tool manufactured by the method
OwnerJung Woo Naminventor
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Abstract
Method of manufacturing a cemented carbide cutting tool, includes a) bonding a body part of hot work tool steel and a cutting part of cemented carbides together by heat treatment; b) cooling the bonded body part and cutting part for a preset period of time; c) machining the cutting part to have a predetermined pattern according to its application and forming a cutting tool; d) coating a surface of the machined cutting tool with a film of at least one of metallic oxides, nitrides and carbides; and e) cooling the coated cutting tool for a preset period of time in air, and a cutting tool manufactured by the method. Cracks do not generate even after the coating step, and thus cemented carbide cutting tool having excellent mechanical properties may be manufactured.
Claims4
A method of manufacturing a cemented carbide cutting tool, comprising:
- a) bonding a body part of hot work tool steel and a cutting part of cemented carbides together by heat treatment;
- b) cooling slowly the bonded body part and cutting part for 24 hours in a vacuum chamber;
- c) machining the cutting part to have a predetermined pattern according to its purpose and forming a cutting tool;
- d) coating a surface of the machined cutting tool with a film of at least one of a metallic oxide, a nitride and a carbide so as to enhance mechanical properties of the cutting tool;
- and
- e) cooling the coated cutting tool for a preset period of time in air.
Dependencies are inferred from the claim text.