公开(公告)号：US11898213B2

公开(公告)日：2024-02-13

申请号：US17785482

申请日：2020-12-18

申请人： AB SANDVIK COROMANT ,  SANDVIK MINING AND CONSTRUCTION TOOLS AB

发明人： Ioannis Arvanitidis ,  Andreas Blomqvist ,  Jose Luis Garcia ,  Erik Holmstrom ,  Mirjam Lilja

IPC分类号： C21D1/06 ,  C21D7/04 ,  C21D9/22

CPC分类号： C21D1/06 ,  C21D7/04 ,  C21D9/22

摘要： A method of treating a sintered mining insert including cemented carbide includes the step of subjecting the mining insert to a surface hardening process. The surface hardening process is executed at an elevated temperature of or above 100° C. A mining insert is also provided, wherein the HV1 Vickers hardness measurement increase (HV1%) from the surface region, measured as an average of HV1 measurements taken at 100 μm, 200 μm and 300 μm below the surface, compared to the HV1 Vickers hardness measured in the bulk (HV1bulk), is at least 8.05-0.00350×HV1bulk.

公开(公告)号：US11850663B2

公开(公告)日：2023-12-26

申请号：US17252939

申请日：2019-06-26

申请人： AB SANDVIK COROMANT

发明人： Jose Luis Garcia ,  Bartek Kaplan ,  Veronica Collado Cipres

IPC分类号： B22F5/00 ,  B22F3/24 ,  C22C29/06 ,  C22C29/08 ,  B82Y30/00 ,  B82Y40/00

CPC分类号： B22F5/00 ,  B22F3/24 ,  C22C29/067 ,  C22C29/08 ,  B22F2003/242 ,  B22F2005/001 ,  B22F2207/05 ,  B22F2302/15 ,  B22F2999/00 ,  B82Y30/00 ,  B82Y40/00

摘要： A cemented carbide including an eta phase and a Ni—Al binder is provided. The Ni—Al binder includes intermetallic y′-Ni3Al -precipitates embedded in a substitutional solid solution matrix of Al and Ni. A weight ratio Al/Ni of between 0.03 to 0.10, wherein a total amount of Ni and Al is between 70 to 95 wt % of the total binder A method of making a cutting tool is also provided.