公开(公告)号：US20160375493A1

公开(公告)日：2016-12-29

申请号：US14591630

申请日：2015-01-07

申请人： Kennametal Inc.

发明人： Pantcho STOYANOV ,  Paul PRICHARD

IPC分类号： B22F7/00 ,  B22F1/00 ,  B22F9/04 ,  B33Y10/00 ,  B28B3/02 ,  B33Y80/00 ,  C04B35/56 ,  C04B35/63 ,  C04B35/645 ,  B22F3/10 ,  B33Y70/00

CPC分类号： B22F7/008 ,  B22F1/0003 ,  B22F3/10 ,  B22F9/04 ,  B22F2301/15 ,  B22F2301/35 ,  B22F2302/10 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00 ,  B33Y10/00 ,  B33Y70/00 ,  C22C29/067 ,  C22C29/08 ,  B22F2201/12 ,  B22F3/008 ,  B22F3/15 ,  B22F2207/05

摘要： 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.

摘要翻译： 本文描述了通过添加剂制造技术制造来自粉末金属碳化物组合物的烧结制品的方法。 在一些实施例中，通过这种添加剂制造技术制造的烧结碳化物制品的密度显示出与根据粉末冶金技术中使用的常规技术形成的制品相等的密度。 例如，制造制品的方法包括提供包括硬质颗粒相包括碳化钨和金属粘合剂相的烧结硬质合金粉末，并通过一种或多种添加剂制造技术将烧结的硬质合金粉末形成为绿色制品。 将绿色制品烧结以提供密度大于理论全密度的90％的烧结制品，其中在烧结之前，绿色制品具有小于理论全密度的50％的密度。

公开(公告)号：US20190084290A1

公开(公告)日：2019-03-21

申请号：US16196846

申请日：2018-11-20

申请人： Kennametal Inc.

发明人： Pantcho STOYANOV ,  Paul PRICHARD

IPC分类号： B33Y70/00 ,  B33Y10/00 ,  C22C29/08

摘要： 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.