Why is the new tool material so perfect?

- Tougher and more balanced blade matrix
- New process and control methods for edge treatment
- New breakthroughs in blade coating innovation
- Further research into finishing processes
- Harmonization of all existing factors
 
Higher resistance of the blade matrix to plastic deformation. The edge can withstand higher temperatures without any loss of performance. The new substrate gradient also reduces microcracking and improves the durability of the edge line.
 
The groove shape and size at the edge is customized to ensure a smoother cutting action throughout the flow area. A new breakthrough in alumina coating organization using chemical vapor deposition (CVD). The edge line is tougher, more wear-resistant and particularly suitable for interrupted cuts, thanks in large part to a newly developed post-treatment process. 
 
All this means that substantial progress has been made in tool material technology, which, combined with a new generation of coated insert technology, fundamentally solves the problem of turning tool performance in this broad and varied machining area with harsh conditions.
 
One of the main innovations in tool materials is coating organization and adhesion. Aluminum oxide is, of course, a proven tool material with proven coatings as part of oxide ceramics and through practice. It is a very effective protective layer for blades, chemically inert, with low thermal conductivity and high resistance to crescent puddle wear by diffusion. This material has a melting point of over 2000 degrees Celsius and is very hard due to its densely arranged crystalline organization.
 
So far, conventional alumina coatings have random crystal orientation. Whereas, these alumina coatings have satisfactory machinability and also overcome some of the drawbacks caused by the harsh conditions of the edge line and the front cutter face. Studying the surface, if the actual crystal orientation is controllable, many of the cutting edge characteristics are also controllable and, more importantly, have been significantly improved.
 
The Inveio coating is an innovation in aluminum oxide, tool material technology with unidirectional non-arbitrary crystal orientation. This is made possible by a uniform approach throughout the CVD process, with controlled crystal growth. By having all the hard alumina crystals aligned in the same way, resulting in a stronger, more uniform coating organization, new properties emerge that are more beneficial for withstanding the forces and temperatures in the flow region. In effect, a brand new front blade contact surface has been created.

Closely spaced atomic planes toward the area of chip contact provide better resistance to crescent puddle wear - the primary diffusive wear mechanism for turning steel parts subjected to heat and pressure. The region of chip flow dissipates heat more efficiently along the crystal planes. Another effect is resistance to microcracking. Cracks form along weak horizontal sections, and coating durability is improved due to slower, uniform and controlled wear.

The new effect, combined with blade coating adhesion, also reduces "false" crescent puddle wear on pressed pieces. The inner coating has a fine titanium-carbon nitride composition with columnar organization, hardness, and high resistance to abrasive wear. In fact, extended tool life and increased cutting speeds - these are the drivers of substantial progress in manufacturing. The insert edge line, which determines part quality and the rate of edge damage, is now more resilient, improving insert performance and the predictability of machined parts.