Tool for coldforming operations

摘要

The present invention relates to cemented carbide tools for coldforming and drawing operations. The cemented carbide comprises WC with an average grain of <1 mum and 0.5-4 weight-% binder phase consisting of Co and Ni, <0.5 wt-% Mo, and <1 wt-% grain growth inhibitors V and/or Cr. The weight ratio Co:(Co+Ni) is 0.25-0.75 and the structure contains 1-5 vol-% of finely distributed eta phase with a size <5 mum.