公开(公告)号：US20240295012A1

公开(公告)日：2024-09-05

申请号：US18578454

申请日：2022-07-08

Applicant: SANDVIK MINING AND CONSTRUCTION TOOLS AB

Inventor： Malin MARTENSSON ,  Carl-Johan MADERUD ,  Anders NORDGREN ,  Jose Luis GARCIA

IPC: C22C29/08 ,  B22F3/15 ,  B22F3/24 ,  B22F5/00 ,  B22F9/02 ,  B22F9/04 ,  C22C1/051 ,  C22C29/06 ,  E21B10/56

CPC classification number: C22C29/08 ,  B22F3/15 ,  B22F3/24 ,  B22F5/00 ,  B22F9/026 ,  B22F9/04 ,  C22C1/051 ,  C22C29/067 ,  E21B10/56 ,  B22F2005/001 ,  B22F2009/043 ,  B22F2301/15 ,  B22F2302/10 ,  B22F2998/10 ,  B22F2999/00

Abstract: A sintered cemented carbide insert for mining or cutting applications includes a mean WC grain size of between 0.8-18 μm, a binder phase in a weight between 4-18 wt %, a gamma phase with the cubic gamma phase precursors in a weight of between 0.8-10 wt %, and any unavoidable impurities and a balance of WC. A difference between the hardness at any point 0.3 mm from the surface of the insert and the hardness of the bulk is at least 25 HV3, wherein hardness is measured according to ISO EN6507. A method of producing the cemented carbide is also provided.