Three industry widely used superhard cutting tools

Through many years research and practical ,superhard cutting tools has realized turning instead of grinding which bring huge economic profit. In current times, superhard cutting tools mainly used in hard turning high hardness materials work piece, and it is widely used in the following industry: Mill Rolls,Pump Part and Automotive Parts industry.

Halnn will analyze why superhard cutting tools can be used in these industry .

 Part 1 The reasons of superhard cutting tools widely used in mill rolls ,pump and automotive industry

(1) Most Mill Rolls are castings,and it will have some defects such as sand,airhole,and it brings difficulty for machining

(2) Most automotive parts will use heat treating process to improve the performance of the work piece, and it will have high hardness after heat treating,and will probably deformed.

(3) The three work piece belongs to consumption ,and has high rate in machinist industry, has huge requirement.

 Part 2 The processing efficiency with superhard cutting tools in Mill Rolls，Pump and Automotive Parts industry 

1. Mill Rolls industry

Many manufacturers used chilled cast iron and high chrome cast iron as the main materials of the mill rolls. Beacuse of high hardness and casting defects ,the mill rolls will difficult to machining with normal cutting tools ,so many manufacturers will use superhard cutting tools rough and finish machining mill rolls .Superhard tools not only improve the processing efficiency (improved 2 ~6 times) ,but also lower the processing cost(including machining time ,power cost and insert costs)

If one mill rolls manufacturer use Halnn BN-K1 CBN inserts machining chilled cast iron with hardness HS60~80,cutting speed improved 3 times.

2. Pump industry

The pump parts are widely used in mining machinist ,heavy machine and powder industry. Because of the bad working environment ,when machining the Pump ,it often use cast iron parts with better performance so that make sure the usage lifetime. But for so high hardness pump work piece, such as the guard with hardness HRC63~67,it will be difficult to machining .

Traditional process is annealing first ,then rough machining ,last quenching. If with superhard insert ,especially Halnn Tools researched BN-K1 CBN insert ,it will just only one step to hard turning ,saved two processes, saved much time and powder ,lower the processing cost. And now about 70~80% pump industry manufacturers are using superhard tools .

3. Automotive Parts industry

Many automotive parts belongs to hardened parts, it will often meet problems on machining hardened parts. For example , when machining bearing inner ring which main materials are GCr15 steel ,hardness HRC60,the diameter is 285mm, it will use grinding first ,but the allowance will not Uniform, and it need 2 h. After using superhard tools ,it only need 45min to machining a inner ring .

 Part 3 Conclusion

Even though above three industry are widely used superhard cutting tools,but there are also many manufacturers know little about superhard cutting tools on hard turning ,and thought that it only can use grinding process on machining hard materials,and the costs on superhard cutting tools is so high.

So Halnn Tools which devote to researching new cutting tools materials to solve the problems on hard turning will help you know more about this new technology. 

More information ,http://www.halnntools.com/news/focus/224.html ,Or contact with us halnntools@gmail.com .skype:cbn_inserts_angels