New CBN grade for the machining of sintered alloy

Mitsubishi Materials Corporation has recently developed and manufactured a new coated CBN grade for machining sintered alloy. This new grade will start to be sold by Mitsubishi Materials Tools Corporation (President: Osamu Takata, Headquarters: 1-6-1 Yokoami, Sumida, Tokyo).

In recent years, with an increasing demand in requirements of automotive components, there has been a widespread shift towards the use of sintered alloy parts. Sintered materials offer high flexibility in material properties and freedom in manufacture complex forms. However sintered materials offer many advantages, they can also be difficult to machine. Tools used for machining of sintered alloy, need to able to meet certain criteria such as obtain excellent dimensional accuracy, surface finishes and also to prevent burr formation.

A new CBN grade, MB4020 offers a high balance of wear and fracture resistance when machining sintered alloys. This is due to the use of a higher CBN content tool grade and improved binding between the CBN particles. This ensures higher machining performance when machining various sintered alloys with different material properties such as hardness, toughness and properties. MB4020 is therefore suitable for use in a wide range of applications from continuous to interrupted machining.