| 摘要 |
PURPOSE:To heighten the quality of a tip for a metal-bonded grindstone of segmental type and promote the strength of brazing of the tip, by composing the tip of an abrasive grain layer and a base layer which is a metal plate. CONSTITUTION:An abrasive grain layer 1 is separately made of compacted powder by press-shaping. The layer 1 is thereafter put on a metal plate 2a manufactured by melting a metal. The abrasive grain layer 1 is then pressed and sintered under a hydrogen atmosphere or the like so that the layer 1 and the metal plate 21 are bonded on each other by diffusion. A tip 4 consisting of the abrasive grain layer 1 and another layer 2 made of the metal plate 2a and integrated with the former layer is thus provided. According to this constitution, the quality of the tip 4 and the strength of its brazing are heightened and the mass production of the tip and the reduction in its production cost are enabled. |
