Borided tungsten carbide reduces tool wear during machining of MDF

High-temperature corrosion is a major tool wear factor when machining medium-density fiberboard (MDF). Standard C2 tungsten carbide (WC-6% Co) was borided to reduce tool wear by hardening the cobalt binder and increasing its resistance to the extraordinary chemical reactions that can occur when machining MDF. Turning tests show that tool forces and edge recession are less for borided than for untreated C2 tungsten carbide. Further, most of the benefits are retained after resharpening the borided tools on the clearance face. Tool life, which is extended by boriding, reduces cobalt binder removal.

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