CBN tool is a synthetic super-hard material, full name is Cubic Boron Nitride, mainly used in the field of ferrous materials cutting. At the same time, as the coating technology becomes more and more mature, it is also widely used in CBN tools, which has become the development trend of advanced cutting machining, and the coated CBN tools have higher hardness, wear resistance and impact toughness compared with uncoated CBN tools, which effectively improves the cutting performance.

We now have 5 advantageous coated, they are C20 (golden yellow), C25 (light gray), C65 (bronze), C03 (heavy bronze) and C75 (taupe). Different colors represent different performance and are suitable for different working conditions. C20 (golden yellow) is a choice with moderate material performance and can be used for both continuous and interrupt machining; C65 (bronze) and C03 (heavy bronze) are suitable for high-speed and continuous machining, which can increase the inserts life; and C75 (taupe) is suitable for cutting at low and medium speeds and for heavy interrupt machining conditions.

The purpose of coating CBN inserts is to extend the life of insert and improve productivity, that can help manufacturers reduce the production cost . We can often meet Halnn inserts on the market have PCBN Inserts BN-H05, BN-H10, BN-H21.brazed CBN inserts structure - BN-H11, BN-K50, BNK25 grades, as well as BN-S200, BN-H200, BN-S300 solid and other Full face CBN tools structure. Halnn coating CBN inserts not only have good cutting stability, but also extend the life of inserts and improve productivity, to help you reduce production costs.

But it is not necessary to use Coated CBN insert in all cases.

1, The uncoated CBN inserts can already meet your process requirement, there is no need Coated CBN insert, because the price of Coated CBN insert is higher than uncoated.

2、If there is no mass production or no need to increase productivity or first time to use PCBN inserts, there is no need to choose coatec CBN inserts.

3、if the uncoated CBN inserts work normal, no fast wear or chip broken and other problems happen, It’s also do not need to use coated inserts.

The coating technology of CBN tools has brought important improvements to cutting process.if you are meet any hard turning question, then you must choose Halnn coated CBN inserts, which can effectively help you to reduce costs and increase efficiency. At the same time, Halnn will keep to develop high-quality coated CBN inserts to support you to more easy and efficient process.