Cover image summary: Sandvik Coromant now has a comprehensive solution for hard part turning operations
Sandvik Coromant is about to launch two new materials, CB7125 and CB7135, for the intermittent turning of hard parts. Two new materials will be officially launched at the new product launch conference in October 2018, plus the already launched CB7105 and CB7115. Material, Sandvik Coromant will have a comprehensive solution for the hard part turning process.
CB7125: Medium CBN content combined with new PVD coating for good fracture resistance and long tool life.
CB7135: High CBN content is suitable for heavy-duty interrupted cutting with best fracture resistance and predictability.
CB7125 and CB7135 are available for medium to heavy duty intermittent turning, as well as for removing hardened layers of carburized and induction hardened steel parts (cutting depths up to 2 mm) for the automotive industry. They provide longer And a more stable service life, as well as good surface quality and stable dimensional tolerances.
Torbjörn Ågren, General Turning Product Manager, Sandvik Coromant, said: 'All customers involved in transmission manufacturing and hard part turning have reasons to use our CBN materials. These materials are suitable for higher cutting speeds and improve edge line safety. Achieve stable tool life, which means lower individual part costs. This is especially true for customers who are committed to a single cutting strategy (high-speed one-pass with large chip thickness). ''
For materials with a hardness of 58-62 HRC, the CB7125 and CB7135 materials are specially optimized.
Designed for medium-interrupted cutting, the CB7125 material features a new PVD coating for higher wear resistance and fracture resistance, helping to extend tool life. The material has a medium CBN content and is a splined shaft. Ideal for chamfered oil/groove shaft turning. It can also be used for gear end turning, soft and hard turning of bevel gears and removal of hardened layers.
CB7135 material is mainly used for gears and shafts without chamfering keyways or grooves, as well as efficient turning of inner/external star wheels (star/bell shells) and cages, etc. The universal joint assembly. High content, high fracture resistance and predictable processing results.
Suitable for T-Max P, CoroTurn 107 and CoroTurn TR tool systems, this material can be made into a variety of basic shapes with a positive rake angle and a negative rake angle, and is available in a variety of cutting edges.
The recommended cutting parameters for CB7125 are: cutting speed 100-200 m/min (328-656 ft/min), feed rate 0.05-0.45 mm/rev (0.002-0.018 in/rev), and CB7135 material cutting speed and Feed rates are 80-160 m/min (262-525 ft/min) and 0.05-0.4 mm/rev (0.002-0.016 in/rev), depending on the application.
With the CB7125 and CB7135 materials available, plus the CB7105 and CB7115 materials (for continuous or continuous to light intermittent cutting operations), Sandvik Coromant now offers hard-to-hard turning operations. Comprehensive solution.
