Diamond Coating for Tungsten Carbide End Mills Allows Milling of Cemented Carbide

U.S. Union Tool Inc. has developed a diamond coating for its UNIMAX Series UDCB and UDCL tungsten carbide end mills to improve hardness and durability for cutting cemented carbide.

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U.S. Union Tool Inc. has developed a diamond coating for its UNIMAX Series UDCB and UDCL tungsten carbide end mills to improve hardness and durability for cutting cemented carbide. By using a deep cut into the cemented carbide, UDCB and UDCL create a “fan shaped” chip, just like cutting steel. 

A diamond film, with adhesion to the cutting tool, provides 80 percent cycle-time reduction and 60 percent machining cost reduction. Deep pocket milling eliminates substrate damage to reduce polishing time (unlike EDM) to produce excellent accuracy of finished parts.

UDCB tools are available for Z-level high efficiency roughing; Z-level re-machining; and Z-level finishing at a 30,000-rpm spindle speed with a 300-mm feed rate.

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