The edge pre-treatment is a very important process in a turnkey system designed to utilize the full potential of a coating.
Typical cutting-edge from a high-end tool manufacturer
The main aim of edge pre-treatment is to increase the edge’s stability and thus the tool’s performance.
Comparison
Advantages of cutting-edge rounding:
• Reduces chipping
• Reduces what is referred to as an “antenna effect” in PVD coatings on sharp edges and thus reduces the stress in the coating
• The more an edge is rounded, the thicker the coatings can be
Influence of cutting-edge rounding when milling high-alloy steel
• Higher cutting-edge stability
• Avoids cutting-edge breakouts and flaking of the coating during the machining process
• Increase of the tool’s lifespan despite a “blunt” cutting-edge
Influence of cutting-edge rounding when drilling
