Tool for drilling/routing of printed circuit board materials

摘要

A dense cemented carbide product is described. The product is manufactured from WC with a grain size between 0.1 and 0.4 mum, fine grain size cobalt and ruthenium powders. The product is used in PCB machining operations where the addition of 10-25% Ru to the binder phase offers up to 25% wear resistant incrases and up to 100% increase in chipping resistance in PCB routing compared to conventional materials (6% cobalt and 0.4 mum grain size).