公开(公告)号：US20210178476A1

公开(公告)日：2021-06-17

申请号：US17185240

申请日：2021-02-25

Applicant: Kennametal Inc.

Inventor： Pankaj K. Mehrotra ,  Pankaj B. Trivedi ,  Kent P. Mizgalski

IPC: B22F3/16 ,  B22F1/00 ,  C22C29/08 ,  C04B35/56 ,  B22F3/02 ,  B22F3/10 ,  B22F9/02 ,  B22F9/04

Abstract: In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.

公开(公告)号：US09079778B2

公开(公告)日：2015-07-14

申请号：US13840037

申请日：2013-03-15

Applicant: Kennametal Inc.

Inventor： Harold Edward Kelley ,  Pankaj K. Mehrotra

IPC: C01B31/34

CPC classification number: C01B31/34 ,  C01B32/949 ,  Y10T428/2982

Abstract: Near-stoichiometric spherical tungsten carbide particles and a method for making near-stoichiometric spherical tungsten carbide particles are disclosed. The method of making these particles may comprise coating a starting powder with a carbon containing compound followed by plasma processing the starting powder in a plasma formed by known ionization techniques using a suitable fluid medium. The near-stoichiometric spherical tungsten carbide particles exhibit desirable particle uniformity, impact resistance, and wear resistance in a variety of applications.

Abstract translation: 公开了近化学计量球形碳化钨颗粒和制备近化学计量球形碳化钨颗粒的方法。 制造这些颗粒的方法可以包括用含碳化合物涂覆起始粉末，然后通过使用合适的流体介质的已知电离技术形成的等离子体等离子体处理起始粉末。 近化学计量的球形碳化钨颗粒在各种应用中表现出期望的颗粒均匀性，耐冲击性和耐磨性。