Hard turning with PCBN Insert Vs Grinding

The use of hard turning instead of grinding is using the turning as the final or finishing process instead of grinding. Grinding is replaced by turning and is widely utilized in a variety of industries. This article will provide some of our experiences with pcbn turning inserts and hard turning advantages.

Hard turning instead of grinding enhances the effectiveness

The rate of removal of metal is usually around 34 times higher than the grinding process, while the energy expense is only about 20 percent. This improves efficiency.

What kind of surface roughness can be achieved with the use of hard turning instead?

The current technology allows for roughness of Ra0.4 when turning instead of grinding. Insert life can be extended if you have the insert that has a wiper. The Halnn BN-10 C25 coated PCBN will extend the tool's lifespan by around 1 than the common CBN insert.

Dry cutting or wet cutting to allow rotating instead of the grinding process

Turning is made by materials by annealing. If you use coolant, it can reduce the cutting force, and increase wear. It will also reduce the life of the tool, meaning there is no need to include the cutting fulid. For the part whose size is affected by temperature, the customers can choose wind coolant. For some cutting process which require cooling, pick CBN Grade BN-H20 and BN-H10.

The process of hard turning requires the cutting of tools.

If it's a small quantity of production, you can choose an appropriate carbide insert. If it is mass production, you can select a coating carbide insert ceramic insert, pcbn turning inserts in accordance with the hardness of the component as well as the working allowance.

Coating Carbide Insert

For components that have a hardness below HRC45 and low cutting speeds.

Ceramic Cutters

Select the component whose is hardness between HRC40 and HRC55, and avoid interrupt cutting.

CBN Insert

The component that has a has a hardness of greater than HRC45, CBN Insert also can be divided into Brazed PCBN Insert and Solid CBN Insert. And when the cutting depth is less than 0.5mm you can select brazing solid cbn insert, when the cutting depth is between 0.5~1.5mm, this component usually belongs to the large-scale, mining industry, steel iron or mining industry. You can select solid cbn insert. The CBN Grade Halnn BN–S20 is suitable for high speed steel and hardened steel. It is an approximate cutting depth of 7mm.

Halnn already resareched a series cbn grade for hard turning from continuous, semi-interrupt, to heavy interrupt condition, from roughing to finishing.

Featured CBN Insert for turning hard

Chipbreaker - CBN Inserts

Excellent chip breaking ability Beware of chip winding on the workpiece or the tool to ensure a high quality surface and the tool life.

CBN Insert with Wiper

You can get a better quality surface with the same feed. The same roughness can be used to produce massive amounts of feed. This can reduce the amount of time needed for each component, and increase the process efficiency.

Coating CBN

Combining smooth coating with cbn inserts base can result in higher cutting efficiency and improved precision in machining and longer lasting.