Sandvik Mining and Construction Tools Ab

Xueying Hai

Ioannis Arvanitidis

Mirjam Lilja

Susanne Norgren

Leif Akesson

Ida Borgh

Leif ÅKesson

The present disclosure relates to a method of making a cemented carbide mining insert, a cemented carbide mining insert with having a chemical and hardness gradient and to the use thereof. The method includes the steps of providing a green mining insert compact formed from a first powder including a WC-based hard phase, optionally one or more further hard-phase components and a binder, applying a second powder including a grain refiner compound and/or a carbon based grain growth promoter to at least one portion of a surface of the green mining insert compact, and sintering the green mining insert compact to produce a cemented carbide mining insert, wherein the first powder additionally includes Cr, in an amount such that the mass ratio of Cr/binder is of 0.01-0.3.

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Vastberga, Sweden

Xueying Hai