Patents Assigned to EWHA Diamond Industrial Co., Ltd.
  • Patent number: 8360046
    Abstract: The present invention relates to a cutting tip for a cutting tool, which is used in cutting or drilling a brittle workpiece such as stone, bricks, concrete, and asphalt and has an excellent cutting speed and a long lifetime, a method of manufacturing the cutting tip, and a cutting tool including the cutting tip. The cutting tip includes an abrasive material and a sintered bonding material, wherein the bonding material is formed of a metal matrix; the metal matrix includes a phase II and/or pore having a certain size at a certain volume fraction; and the phase II is one of a non-metallic inclusion and ceramic. According to an aspect of the present invention, there is provided a cutting tip having excellent cutting speed and a long lifetime at a much lower price.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: January 29, 2013
    Assignee: EWHA Diamond Industrial Co., Ltd.
    Inventors: Tae-Woong Kim, Joong-Cheul Yun, Young-Choul Song, Sang-Beom Kim, Jung-Nam Park, Suk-Hyun Yoo, Tae-Bong Kim