Rock drill insert

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United States of America Patent

PATENT NO 12098447
APP PUB NO 20210140019A1
SERIAL NO

17041014

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A rock drill insert made of cemented carbide includes hard constituents of tungsten carbide (WC) in a binder phase of Ni—Cr, or Ni—Co—Cr, and a balance of WC and unavoidable impurities. The cemented carbide has a 3.5-18 wt % binder phase. The binder phase has >0 wt % Ni. The mass ratio Cr/(Ni+Co) is 0.02-0.19. A 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.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
SANDVIK MINING AND CONSTRUCTION TOOLS ABSANDVIKEN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arvanitidis, Ioannis Stockholm, SE 9 10
Borgh, Ida Stockholm, SE 2 0
Lilja, Mirjam Farsta, SE 7 178
Martensson, Malin Nacka, SE 14 66
Tarrago, Cifre Jose Maria Barcelona, ES 1 0
Turba, Krystof Bandhagen, SE 2 1

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