公开(公告)号：US11141829B2

公开(公告)日：2021-10-12

申请号：US16338068

申请日：2017-09-21

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Ibrahim Sadik ,  Jose Luis Garcia

IPC: B23B27/14 ,  B23Q11/10 ,  C23C30/00 ,  C22C29/06

Abstract: The use of cryogenic coolant in a machining operation in Ti, Ti-alloys or Ni-alloys together with a cutting tool of a cemented carbide substrate with a gradient surface zone with a thickness of between 50-400 μm is provided. The cemented carbide substrate has a binder phase gradient with the lowest binder phase content in the outermost part of the gradient surface zone and the cemented carbide having graphite. The arrangement leads to a significantly prolonged tool life.

公开(公告)号：US11162161B2

公开(公告)日：2021-11-02

申请号：US16063841

申请日：2016-12-16

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Leif Åkesson ,  Jose Luis Garcia ,  Kare Finneid

IPC: C22C29/08 ,  C22C1/05 ,  C22C29/06 ,  B23B27/14 ,  B22F5/00 ,  C23C16/32 ,  C23C16/34 ,  C23C16/40

Abstract: The present disclosure relates to a cutting tool of a cemented carbide substrate including WC and a binder phase having one or more of Co, Fe and Ni, wherein the cemented carbide also includes a finely dispersed eta phase of Me12C and/or Me6C carbides, where Me is one or more metals selected from W, Mo and the binder phase metals, wherein the substoichiometric carbon content in the cemented carbide is between −0.30 to −0.16 wt %. The disclosed cutting tool will achieve an improved resistance against comb cracks.

公开(公告)号：US11590572B2

公开(公告)日：2023-02-28

申请号：US16476903

申请日：2016-12-20

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Jose Luis Garcia ,  Marta Saraiva

IPC: B22F7/00 ,  B22F3/10 ,  C22C29/08 ,  B22F3/24 ,  B22F5/00

Abstract: A method of making a cutting tool includes providing a first sintered cemented carbide body of a WC, a metallic binder phase and eta phase and wherein the substoichiometric carbon content in the cemented carbide is between −0.30 to −0.16 wt %. The first sintered cemented carbide body is subjected to a heat treatment at a temperature of between 500 to 830° C. for a time between 1 to 24 h. A cutting tool made according to the above method having an increased resistance against comb cracks is also provided.

公开(公告)号：US11285545B2

公开(公告)日：2022-03-29

申请号：US16491632

申请日：2018-03-07

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Jose Luis Garcia ,  Jeanette Persson

IPC: B23B27/14 ,  B23C5/16 ,  C23C28/04 ,  C22C29/08

Abstract: A coated cutting tool includes a substrate of cemented carbide and a coating. The cemented carbide is made of WC and a binder phase of one or more of Co, Fe and Ni. The carbon content in the cemented carbide is a substoichiometric carbon content SCC, wherein −0.13 wt %≤SCC

公开(公告)号：US10995399B2

公开(公告)日：2021-05-04

申请号：US15569706

申请日：2016-04-26

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Cecilia Arhammar ,  Jose Luis Garcia

IPC: C23C8/20 ,  C22C29/08 ,  C23C8/64 ,  B22F3/10 ,  B22F5/00 ,  C23C8/02 ,  C23C24/10 ,  C23C24/06 ,  C23C30/00 ,  B22F9/04 ,  B22F9/08 ,  C23C16/34

Abstract: A cutting tool has a substrate of cemented carbide including WC and a binder phase. The cutting tool has a gradient surface zone with a thickness of between 50-400 μm having a binder phase gradient with the lowest binder phase content in the outermost part of the gradient surface zone and wherein the cutting tool also includes free graphite. The present disclosure also relates to a method of making a cutting tool according to the above. The cemented carbide body shows improved resistance towards chemical wear when used for machining non-ferrous alloys such as Ti-alloys and Ni-based alloys.