Walter Adds 2 Geometries to its Tiger•tec Silver Insert Lineup

Walter has added two new geometries to its line of high-performance Tiger·tec Silver inserts.

News Item From: 1/31/2014 Production Machining
Originally titled '2 Geometries Added to Insert Lineup'

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Walter has added two new geometries to its line of high-performance Tiger·tec Silver inserts. Tiger·tec Silver, with its CVD coating, is designed to enhance cutting speed, reliability and tool life, and the RK5 and RK7 geometries bring these advantages to the machining of ISO K (cast iron) materials and join the MK5 universal geometry already available.

A key feature of the geometries is their plateau step between the location face and the cutting edge. This step enables the location face to be ground after coating, something that is not possible to do with standard inserts without a chipbreaker groove. The resulting uneven location face on standard inserts can lead to micro-vibrations and chipping at the cutting edge. By contrast, the evenly ground faces of the new Walter inserts ensures that they can be seated with maximum stability. As a result, wear is reduced, tool life enhanced, and process reliability increased, particularly in cases of high dynamic loads.

The RK5 for cast iron roughing operations is a classic flat top insert without chipgroove and delivers the advantages of speed, reliability and longer tool life, particularly in the machining of grey cast iron. RK7 is an extremely robust insert for heavy interrupted cuts, large depth-of-cut variations causing uneven material removal, and hard cast skin. Its geometry is similar to the RK5s, but it also has a protective chamfer on the cutting edge. It is also suitable for the hard/soft machining of hardened steels with hardness from 40-62 HRC, for which CBN inserts are not suitable in many cases. The existing Walter MK5 (“universal”) geometry is suitable for medium machining of all cast iron workpieces. It has an open chipbreaker groove for a soft cutting action and is especially well suited for machining ductile cast iron, unstable components, or internal machining with low cutting pressure.

 

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