Dry milling of a 60-62 HRC die

An OEM customer is looking for the right coating to enhance dry milling of SKD11 tool steel (HRC 60-62) with a square end mill (Ø8 mm). The milling process uses a 4000 rpm tool rotation speed, cutting speed of 100 m per minute, a radial depth of 0.25 mm and an axial depth of 8 mm.

Problems encountered:

Recommendation is a coating with:

  • Plastic deformation due to high temperatures
  • High hardness
  • Abrasive wear
  • High temperature resistance
  • Chipping of the cutting edge

Our recommondation

Hardcut Plus, a TiSiN based multi-layer coating, was developed for high speed end-milling and gear hobbing of the hardest and toughest materials under low lubrication and dry conditions.

Hardcut Plus