Cutting tool
AssigneeSandvik Intellectual Property AB
InventorsJose Luis Garcia, Marta Saraiva
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Abstract
A method of making a cutting tool includes providing a first sintered cemented carbide body of a WC, a metallic binder phase and eta phase and wherein the substoichiometric carbon content in the cemented carbide is between −0.30 to −0.16 wt %. The first sintered cemented carbide body is subjected to a heat treatment at a temperature of between 500 to 830° C. for a time between 1 to 24 h. A cutting tool made according to the above method having an increased resistance against comb cracks is also provided.
Claims13
A method of making a cutting tool having a cemented carbide substrate, the method comprising the steps of:
- providing a first sintered cemented carbide body comprising a WC, a metallic binder phase and eta phase comprising Me12C and/or Me6C carbides, wherein Me is selected from W, Mo and one or more of the binder phase metals, wherein a substoichiometric carbon content in the cemented carbide is between −0.30 to −0.16 wt %, and wherein the eta phase distribution in the first cemented carbide body is the same throughout the whole cemented carbide substrate, and wherein the eta phase in the first cemented carbide body has a grain size of 0.1 to 10 μm;
- and
- subjecting said first sintered cemented carbide body to a heat treatment at a temperature of between 500 to 830° C. for a time between 1 to 24 h.
Dependencies are inferred from the claim text.