Application of PCBN Inserts for machining materials difficul
With the further improvement on the hardness and wear resistance requirements of mechanical parts, as well as the appearance of a variety of difficult to produce materials, the tool is facing a greater test. PCBN tools, as one of the most promising tools for future manufacturing, need to be widely used in the future industries. In the modern times, the dry cutting process is the necessary with pcbn inserts for machining high hardness materials.
The requirements of the dry cutting tools on the cutting tools
Dry cutting is developed with the tool material, especially with the high temperature tool materials. The friction coefficient of the PCBN Insert is small, the chips can be push easily, and the heat can be volated easily. PCBN Tool is the most suitable tools materials for dry cutting. Large cutting force and high temperature is the characters of dry cutting, and it reduces the strength between the cutting tools and the workpiece in the high temperature. So we need to pay more attention on the match between the tool materials and the workpiece.
The surface quality of the workpiece machined by PCBN Insert
The hard turning process with PCBN Insert generally produces residual compressive stress below the surface layer of the workpiece. And The compressive stress helps to improve the surface fatigue resistance, which is also a good performance for the PCBN tool. In the use of PCBN tool, we should pay attention to the choice of processing conditions, which cutting the amount of residual stress on the distribution of the smaller, and the tool structure of the residual
The distribution of the stress is very influential, especially the geometric parameters of the chamfering need to be carefully selected.
As a new type of tool material, PCBN tool has been mature on the hard continuous cutting field, And the main PCBN Grade include solid PCBN Insert (BN-S20,BN-K1,BNK30), PCBN Insert(BN-H21,BN-K10 and BN-H10), Brazing PCBN Insert(BN-K10, BN-H20 and BN-H21). The main application industries include cast iron and hardened steel. Especially for interrupted turning condition, BN-H21 perform well, and are mainly used for hard turning hardened steel.
As the predecessor of superhard cutting tools in China, Halnn have made so many cbn inserts grade for hard turning industry, especially for machining hardened steel ,chilled cast iron, ni hard materials, ect. And we will continue to research new cbn inserts grade to meet the requirements of the customers’.
If you have any problems on hard turning or PCBN Tools, please feel free to contact with us info@halnntools.com, Or leave message for me through whatsapp:+8615617635382