BN-H11,BN-H20,BN-S20
Finish Hard turning Gear wheel used CBN insert grade Finish hard turning Gear Wheel is one process after heat-treating, the working allowance usually within 0.3mm. The carbide insert mainly used for hard turning gear wheel, but can not finish turning it ,and it will be Severe wear, and need change the insert frequently. Finish turning the gear wheel ,we can choose ceramic insert and cbn insert, and need avoid the interrupt condition. So if the working condition is finishing with high speed, we need choose the most suitable insert depending on the practical condition. When finishing the gear wheel ,we can choose BN-H11 and BN-H20 CBN insert, it also can be used for hard turning and interrupted turning ,it will not appear chipping with normal condition.
When meet interrupted turning condition, we recommend to choose BN-20 PCBN insert which can be interrupted turning gear wheel with high speed. Compared with traditional CBN insert, it not only has high efficiency, but also has high insert lifetime which lower the process cost. When finish turning gear wheel, if you used some Europe brand cbn insert before, and now you want to lower processing cost with similar efficiency, you can choose BN-H11 CBN insert . For finish turning hard turning gear wheel, BN-S20 cbn insert will be the best choice, it not only can large allowance hard turning the gear wheel ,but also not chipping when meet interrupted turning conditions. The roughness can arrive Ra0.8~Ra0.3.
When hard turning gear wheel, we can choose different cbn insert grade depending on the machining condition, and the hardness decide what cutting tools is the most suitable. Carbide cutting tools suit for machining gear wheel with hardness below HRC40,Ceramic CBN insert /CBN Cutting tools