公开(公告)号：US11104979B2

公开(公告)日：2021-08-31

申请号：US16093541

申请日：2017-04-06

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Carl-Johan Maderud ,  John De Flon

IPC: B22F3/15 ,  C22C29/06 ,  C22C1/05 ,  B22F10/10 ,  B33Y10/00 ,  B33Y70/00 ,  B22F1/00 ,  B23B27/14 ,  B23C5/16 ,  B24D3/00 ,  B22F3/10 ,  E21C35/183 ,  E21B10/46 ,  B33Y80/00 ,  B22F5/00

Abstract: The present invention relates to a powder mixture for three-dimensional (3D) printing of a cermet or a cemented carbide body. The powder mixture includes 65-85 wt % of porous cemented carbide or cermet particles of a median particle size (D50) of 10-35 μm, and 15-35 wt % of a dense cemented carbide or cermet particles of a median particle size (D50) of 3-10 μm. The present invention also relates to a method of making a cermet or cemented carbide body, the method including the steps of forming the powder mixture, 3D printing a body using the powder mixture and a printing binder and thereby forming a 3D printed cermet or cemented carbide green body and sintering the green body and to form a cermet or cemented carbide body.

公开(公告)号：US11261510B2

公开(公告)日：2022-03-01

申请号：US16487128

申请日：2018-02-27

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Leif Akesson ,  Anders Stenberg ,  Carl-Johan Maderud ,  Susanne Norgren ,  Elias Forssbeck Nyrot

IPC: B23B27/14 ,  C22C29/08 ,  B22F7/06 ,  C22C29/00 ,  B22F5/00 ,  C23C28/04

Abstract: A cutting tool made of a cemented carbide substrate of WC, a metallic binder phase and gamma phase is provided. The cemented carbide has a well distributed gamma phase and a reduced amount of abnormal WC grains. The cutting tool has a more predicted tool life and an increased resistance against plastic deformation.

公开(公告)号：US11185929B2

公开(公告)日：2021-11-30

申请号：US16487132

申请日：2018-02-27

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Leif Akesson ,  Anders Stenberg ,  Carl-Johan Maderud ,  Susanne Norgren ,  Elias Forssbeck Nyrot ,  Ake Ostlund ,  Jan Engqvist

IPC: B23B27/14 ,  C23C28/04

Abstract: A coated cutting tool of a cemented carbide substrate made of WC, a metallic binder phase and a gamma phase has a well distributed gamma phase and a reduced amount of abnormal WC grains. Further, the coated cutting tool is provided with a CVD coating of TiCN and an α-Al2O3 layer, wherein the α-Al2O3 layer exhibits a texture coefficient TC(0 0 12)≥7.2 and wherein in the ratio I(0 0 12)/I(0 1 14)≥1. The coated cutting tool has an increased resistance against plastic deformation. whilst maintaining toughness.

公开(公告)号：US09777349B2

公开(公告)日：2017-10-03

申请号：US14352314

申请日：2012-10-17

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Carl-Johan Maderud ,  Tommy Flygare ,  Michael Carpenter ,  Jane Smith

IPC: C22C29/00 ,  C22C29/08 ,  C22C1/05 ,  B22F1/00 ,  B22F9/02 ,  B01F11/02 ,  B01F3/18

CPC classification number: C22C29/00 ,  B01F3/18 ,  B01F11/02 ,  B01F2215/0454 ,  B22F1/0048 ,  B22F9/026 ,  B22F2202/01 ,  C22C1/051 ,  C22C29/08

Abstract: The present invention relates to a method of making a cemented carbide or a cermet body comprising the steps of first forming a powder blend comprising powders forming hard constituents and metal binder. The powder blend is then subjected to a mixing operation using a non-contact mixer wherein acoustic waves achieving resonance conditions to form a mixed powder blend and then subjecting said mixed powder blend to a pressing and sintering operation. The method makes it possible to maintain the grain size, the grain size distribution and the morphology of the WC grains.