Hard part turning with CB7105 and CB7115

Hard part turning with CB7105 and CB7115

Sandvik Coromant's new grades CB7105 and CB7115 break new ground in hard part turning. The new grades are based on the newest generation Cubic Boron Nitride (CBN) material. This material enhances crater wear resistance and fracture resistance at high cutting speeds in case hardened and induction hardened material.

November 19, 2018

Hard part turning is usually a finishing or semi-finishing process with high dimensional accuracy and surface quality requirements.

Sandvik Coromant's new grades CB7105 and CB7115 break new ground in hard part turning. The new grades are based on the newest generation Cubic Boron Nitride (CBN) material. This material enhances crater wear resistance and fracture resistance at high cutting speeds in case hardened and induction hardened material.

  1. New generation Cubic Boron Nitride materials enhance crater wear resistance and fracture resistance at high cutting speed in case hardened and induction hardened materials.
  2. CB7115 – One-cut strategy, a single cut with larger chip thickness, can produce leading levels of surface quality and dimensional tolerance.
  3. Cubic Boron Nitride material for best dimensional accuracy and tight tolerance of the machined component.
  4. TiN-PVD coating for excellent surface finish that also is a help to identify used cutting edges.
  5. CB7105 - When utilizing high speed machining or longer tool life at lower speed.
  6. Optimized edge preparation for best balance between long tool life and reliable machining.
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Glossary terms in this article

  • cubic boron nitride (CBN)
    Crystal manufactured from boron nitride under high pressure and temperature. Used to cut hard-to-machine ferrous and nickel-base materials up to 70 HRC. Second hardest material aft…
  • edge preparation
    Conditioning of the cutting edge, such as a honing or chamfering, to make it stronger and less susceptible to chipping. A chamfer is a bevel on the tool’s cutting edge; the angle i…
  • wear resistance
    Ability of the tool to withstand stresses that cause it to wear during cutting; an attribute linked to alloy composition, base material, thermal conditions, type of tooling and ope…
  • cutting speed
    Tangential velocity on the surface of the tool or workpiece at the cutting interface. The formula for cutting speed (sfm) is tool diameter 5 0.26 5 spindle speed (rpm). The formula…