Walter Indexable Inserts with Positive Geometry

Walter has expanded its Tiger·tec Silver range of indexable inserts with three new ISO P geometries, all possessing a positive cutting-edge design.

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Walter has expanded its Tiger·tec Silver range of indexable inserts with three new ISO P geometries, all possessing a positive cutting-edge design. These three new products, the FP4, MP4 and RP4, are available with WPP10S, WPP20S and WPP30S Tiger·tec Silver cutting grades. The combination of Tiger·tec Silver and these geometries can result in significant increases in performance. During a recent auto industry field test, an MP4 insert made from WPP10S Tiger·tec Silver produced 60 components compared with 35 produced with a competing product.

The inserts are aimed at specific applications ranges. The FP4 (F = finishing) is optimized for finishing and achieves the best surface finish quality and chip control for precision machining, the company says. The MP4 (M = medium) for mid-range machining with a feed rate range with good chip control. It is the most universal design of the three new inserts and is particularly well suited to machining materials such as structural steel or other low-carbon steels. Both the MP4 and FP4 geometries have been optimized for short chipbreaking, which is effective on long chipping materials, such as structural steels. The MP4 geometry is available with two clearance angles—7 degrees and 11 degrees. The clearance angle of 11 degrees enables machining of small diameters with low tool pressure especially for thin wall or delicate components. Finally, the RP4 (R = roughing) offers a highly stable cutting edge for roughing forged steel parts or cast iron. This insert is an ideal choice for high volume machining.

The positive cutting edge design can offer numerous benefits, such as lower cutting pressures and a lower force cutting action for machining small diameters or long, unstable components.