Hard turning cutting tool grades, geometries

Hard turning cutting tool grades, geometries

December 13, 2018

Seco Tools LLC

Tooling/Cutting Turning/Milling

Troy, Michigan – To eliminate the difficulties of hard turning operations, Seco Tools has added a new grade format and several new geometries to its line of polycrystalline cubic boron nitride (PCBN) inserts. The additions broaden the extremely tough Seco CH3515 insert grade and introduce a new solid CBN150 insert grade, special long and short wiper geometries, and laser-etched chipbreakers.

The Seco CH3515 insert grade offers high reliability in harsh cutting conditions with heavy interrupted cuts, while the CBN150 solid insert grade yields high surface-finish quality during light interrupted and continuous cuts in hard turning.

The standard line now includes more sizes and geometries to optimize hard-turning operations, and cost per edge drops with an increased number of cutting edges per insert.

Enhanced hard turning feed rates and/or surface finish quality result from new long WL and short WS wiper radii. The WL wiper inserts enable feed-rate increases of up to 100% while maintaining surface finish quality. With the WS wiper, cutting forces drop by as much as 15% for improved machining in low-stability conditions.

With new laser-etched chipbreakers, the inserts are designed for applications that transition from hard to soft part surfaces while allowing for increased depths of cut and feed rates over previous insert designs. The laser-generated flowing-radii chipbreakers exceed the performance of ground chipbreakers in generating smooth insert walls and reducing sharp corners. These improvements produce smoother chip flow and help prevent chipping while increasing chipbreaker application range.