公开(公告)号：US20180221962A1

公开(公告)日：2018-08-09

申请号：US15944385

申请日：2018-04-03

Applicant: Kennametal Inc.

Inventor： Pantcho Stoyanov

IPC: B23B27/14 ,  C22C29/08 ,  C22C29/06 ,  B22F3/00 ,  B22F3/105 ,  B22F3/15 ,  B23B27/10 ,  B23B51/02 ,  B23C5/20 ,  C22C1/05 ,  B22F9/08 ,  B22F5/00

CPC classification number: B23B27/14 ,  B22F3/008 ,  B22F3/1055 ,  B22F3/15 ,  B22F9/08 ,  B22F2005/001 ,  B22F2301/15 ,  B22F2302/10 ,  B22F2998/10 ,  B23B27/10 ,  B23B51/02 ,  B23B2222/28 ,  B23B2228/10 ,  B23C5/20 ,  B23C2228/25 ,  C22C1/051 ,  C22C29/067 ,  C22C29/08 ,  Y02P10/295 ,  B22F2009/0828

Abstract: A cutting tool made by an additive manufacturing process is disclosed. The cutting tool has an exterior surface and an enclosed interior cavity defined by one or more inwardly facing surfaces. The interior cavity may have internal supports such as a lattice or a honeycomb structure. The cutting tool may be an insert, drill or endmill with coolant holes.

公开(公告)号：US11123801B2

公开(公告)日：2021-09-21

申请号：US15944385

申请日：2018-04-03

Applicant: Kennametal Inc.

Inventor： Pantcho Stoyanov

IPC: B23B27/14 ,  C22C29/08 ,  B22F3/15 ,  C22C29/06 ,  B23C5/20 ,  B23B27/10 ,  B23B51/02 ,  C22C1/05 ,  B22F10/10 ,  B22F5/00 ,  B22F9/08

Abstract: A cutting tool made by an additive manufacturing process is disclosed. The cutting tool has an exterior surface and an enclosed interior cavity defined by one or more inwardly facing surfaces. The interior cavity may have internal supports such as a lattice or a honeycomb structure. The cutting tool may be an insert, drill or endmill with coolant holes.

公开(公告)号：US10144065B2

公开(公告)日：2018-12-04

申请号：US14591630

申请日：2015-01-07

Applicant: Kennametal Inc.

Inventor： Pantcho Stoyanov ,  Paul Prichard

IPC: B22F7/00 ,  B22F3/10 ,  B22F1/00 ,  B22F9/04 ,  B33Y10/00 ,  B33Y70/00

Abstract: Methods of making sintered articles from powder metal carbide compositions by additive manufacturing techniques are described herein. Sintered carbide articles fabricated by such additive manufacturing techniques, in some embodiments, exhibit densities equaling articles formed according to conventional techniques employed in powder metallurgy. For example, a method of manufacturing an article comprises providing sintered cemented carbide powder comprising a hard particle phase including tungsten carbide and a metallic binder phase and forming the sintered cemented carbide powder into a green article by one or more additive manufacturing techniques. The green article is sintered to provide a sintered article having density greater than 90% theoretical full density, wherein the green article has a density less than 50% theoretical full density prior to sintering.

公开(公告)号：US11065862B2

公开(公告)日：2021-07-20

申请号：US16196846

申请日：2018-11-20

Applicant: Kennametal Inc.

Inventor： Pantcho Stoyanov ,  Paul Prichard

IPC: B33Y70/00 ,  B33Y10/00 ,  C22C29/08 ,  C22C29/06 ,  B22F10/10 ,  B22F3/10 ,  B22F3/15

Abstract: Methods of making sintered articles from powder metal carbide compositions by additive manufacturing techniques are described herein. Sintered carbide articles fabricated by such additive manufacturing techniques, in some embodiments, exhibit densities equaling articles formed according to conventional techniques employed in powder metallurgy. For example, a method of manufacturing an article comprises providing sintered cemented carbide powder comprising a hard particle phase including tungsten carbide and a metallic binder phase and forming the sintered cemented carbide powder into a green article by one or more additive manufacturing techniques. The green article is sintered to provide a sintered article having density greater than 90% theoretical full density, wherein the green article has a density less than 50% theoretical full density prior to sintering.