Performance of Pressureless-sintered Metal-bonded Diamond Tools

• Main Authors: Yu-jaan sheih, 謝育展
• Other Authors: Shun-tian Lin
• Format: Others
• Language: en_US
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/17128648156480612634

碩士 === 國立臺灣科技大學 === 機械工程系 === 87 === We report on the processing of metal-bonded low concentration diamond cutting tools, using iron alloys as the matrix. The effects of matrix composition, sintering temperature, and existence of an interfacial barrier layer on the mechanical properties of the diamond tools were systematically investigated. With the existence of a titanium based carbide layer near the inter-layer, the bonding between the diamond grits and the matrix was enhanced. The diamond tools, which were fabricated by sintering the composition in vacuum, were better than traditional tools fabricated by hot pressing. Our investigation indicated that the blocks of diamond tools fabricated with iron as the primary matrix phase composition and diamond grits coated with titanium had ten times as long a life as commercial hot-press counterparts.