Cutting Tools All-rounder insert grade for ISO K applications
Insert grades that can be used universally due to their special properties make manufacturing processes efficient and cover a wide range of applications. The GC3330 grade from Sandvik Coromant is suitable for all common methods of cast iron milling.
Every machinist is familiar with the question: what is the right grade for this special processing situation? And anyone who cuts a wide variety of materials regularly knows that it is a question that has to be answered just as frequently. Sandvik Coromant has developed the new GC3330 grade to solve this very problem in cast iron milling, the company recently announced. One of its major pluses is said to be its enormous versatility.
One grade for a wide variety Iof applications
Manufacturing companies cannot only use the same grade – and thus the same insert – for a wide variety of applications, but also for different processing conditions. According to the supplier, GC3330 is suitable for milling grey cast iron and nodular cast iron, as well as for dry and wet processing applications and for roughing and finishing operations. GC3330 is available for a variety of milling cutters for face-, shoulder-, profile-, grooving, and high feed-milling.
The primary driving force behind the versatility and performance of the new GC3330 insert is an innovation in cutting materials, Sandvik Coromant says: advanced InveioTM technology.Alumina, a coating material that has already proven its worth, represents an extremely effective barrier between the insert and the material. It is chemically inert and has low heat conductivity, properties that make it highly resistant to crater wear, the supplier explains. The conventional alumina coatings available to date have an arbitrary crystal orientation. The new GC3330 milling grade, on the other hand, has a CVD alumina coating layer with a uni-directional crystal orientation produced under controlled conditions. Crystals that are all aligned towards the upper surface achieve increased wear-resistance, thus enhancing process reliability and providing better and more predictable tool life, the manufacturer claims. It goes on to explain that Inveio technology allows the composition of the cutting edge to be better controlled and optimised. When alumina crystals are aligned in the same direction, one of the results is a stronger, more uniform coating structure with improved properties. This is said to allow for better resistance to the forces and temperatures that develop in the cutting zone. The dense compression of the individual crystals pointing towards the cutting zone makes it easier for the heat along the surface of the crystals to be dissipated. Faster heat dissipation increases the resistance of the cutting edge to crater wear and abrasion, enabling longer cutting times with increased process reliability.