Progressed Sinter Brazing Technology Enables the Production of Complex Shaped Parts

摘要

Powder metallurgy is a processing method whereby green parts are compacted using dies and sintered .It offers equivalent strength as cast iron and superior design flexibility, and produces near-net shaped parts at lower costs as it reduces the need for machining process. For these reasons, powder metallurgy has expanded its market as a result of VA~(*1) applied to cast iron parts. However, while compaction tooling offers design flexibility in two dimensions, it has difficulty in producing parts with height (in the Z-axis direction) due to ejection constraints. We have introduced bonding technology to compaction tooling using powder metallurgy and achieved design flexibility in three dimensions. This paper describes the characteristics of bonding parts and details assurance methods for bonding areas in our current production.