Speed, safety and long tool life – these are the three main advantages of the Tiger•tec Silver® high-performance cutting material for cast iron machining, which is now available in two new geometries: A regular flat top geometry with a stepped plateau, as well as a particularly robust variant for maximum process reliability, even for extreme interrupted cuts.
In addition, Tiger•tec Silver® has been available for cast iron with the MK 5 universal geometry since June. A key feature of the new ISO K geometries is their plateau step between the location face and the cutting edge. This step enables the location face to be ground after coating, whereas it is not possible to grind the location faces of standard CNMA, DNMA, etc., inserts without a chipbreaker groove separating the location face from the cutting edge. While the uneven location face on standard inserts can lead to micro-vibrations and chipping at the cutting edge, the evenness of the face on the new ISO K geometry from Walter ensures that the indexable insert is seated with the utmost stability. As a result, cutting-edge wear is reduced, particularly in the event of high dynamic loads. The MK5, RK5 and RK7 geometries – universal, classic and robust – were specifically designed for cast iron machining. The ISO K MK5 geometry for medium machining is universally suitable for all cast iron workpieces. The RK5 and RK7 geometries are new for roughing operations.