CEMENTED CARBIDE AND CUTTING TOOL - SUMITOMO ELECTRIC INDUSTRIES

Title:

CEMENTED CARBIDE AND CUTTING TOOL

Document Type and Number:

WIPO Patent Application WO/2016/203674

Kind Code:

A1

Abstract:

Provided are: a cemented carbide having excellent plastic deformation resistance; and a cutting tool manufactured by using the cemented carbide as a base member. A cemented carbide provided with a hard phase containing tungsten carbide particles and a binder phase containing an iron-group element as the main component, wherein the formula: B/A ≤ 0.05 is satisfied. In the formula, A represents the number of the tungsten carbide particles; and B represents the number of specific tungsten carbide particles contained in the tungsten carbide particles, wherein the specific tungsten carbide particles have such a property that the number of contact points between each of the specific tungsten carbide particles and another tungsten carbide particle is 1 or less. It is preferred that the iron-group element comprises cobalt and the content of cobalt in the cemented carbide is 8% by mass or more. It is also preferred that the tungsten carbide particles have an average particle diameter of 3 μm or more.

More Like This:

WO/2010/119795	CEMENTED CARBIDE
JP3291562	MINIATURE DRILL MADE OF CEMENTED CARBIDE WITH HIGH STRENGTH

Inventors:

YAMAMOTO TSUYOSHI (JP)
MATSUKAWA MICHIKO (JP)
KIDO YASUKI (JP)
TSUDA KEIICHI (JP)

Application Number:

PCT/JP2015/085097

Publication Date:

December 22, 2016

Filing Date:

December 15, 2015

Export Citation:

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)

International Classes:

C22C29/08; B23B27/14; B23B51/00; B23C5/16; C22C1/05

Foreign References:

JP2015101746A

2015-06-04

Other References: