About CBN inserts for High carbon brake disc machining:

In recent years, the high-carbon brake disc has become popular, the requirements for the three major elements

of chemical composition are:

C:    ≥ 3.7     Si:≥ 1.6      Mn:0.40.8

The high carbon brake disc machining difficulties are:

  • Black spots on the surface of the brake surface are exposed, causing an excessive surface roughness and suspected

graphite spots.

  • The machining tool life is reduced by 20-60% compared to ordinary brake discs.

Ensoll PCBN inserts IT750 exhibits excellent performance for this application and greatly improve the tool life.

 

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