A ROCK DRILL INSERT

A rock drill insert made of cemented carbide that comprises hard constituents of tungsten carbide (WC) in a binder phase of Ni-Cr, or Ni-Co-Cr, and balance WC and unavoidable impurities, wherein the cemented carbide comprises 3.5-18 wt% binder phase, the binder phase comprises > 0 wt% Ni, the mas...

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Bibliographic Details
Main Authors LILJA, Mirjam, ARVANITIDIS, Joannis, TURBA, Krystof, TARRAGÓ CIFRE, José Maria, MÅRTENSSON, Malin, BORGH, Ida
Format Patent
LanguageEnglish
French
German
Published 07.06.2023
Subjects
ALLOYS
ARTIFICIAL STONE
CASTING
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
FERROUS OR NON-FERROUS ALLOYS
LIME, MAGNESIA
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
REFRACTORIES
SLAG
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
TREATMENT OF NATURAL STONE
WORKING METALLIC POWDER
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Summary:A rock drill insert made of cemented carbide that comprises hard constituents of tungsten carbide (WC) in a binder phase of Ni-Cr, or Ni-Co-Cr, and balance WC and unavoidable impurities, wherein the cemented carbide comprises 3.5-18 wt% binder phase, the binder phase comprises > 0 wt% Ni, the mass ratio Cr/(Ni+Co) is 0.02-0.19, the difference between the hardness at 0.3 mm depth at some point of the surface of the rock drill insert and the minimum hardness of the bulk of the rock drill insert is at least 30 HV3.
Bibliography:Application Number: EP20180164215