CBN tools are more suitable for machining hardened steel gea

First of all, hard materials with more than 60 degrees of HRC are mostly hardened steel parts, such as gears,wind power bearings, 

ball screws, molds, etc., which are common hard material workpieces, and the precision requirements are high. In the early stage,

the grinding process is mainly used to ensure high surface finish and dimensional accuracy of the workpiece. However, with the 

transformation and upgrading of the manufacturing industry, how to improve its own competitiveness while ensuring product quality 

has become a problem that enterprises have been thinking about. Therefore, companies are always looking for efficient turning tools 

that can replace the grinding process.

At present, the tools for processing HRC 60 degree hard material workpieces are mainly CBN tools. For hardened steel, the tool 

industry has truly realized turning instead of grinding, which greatly improved the production efficiency, reduced the total production 

cost, and guaranteed the manufacturing enterprises competitiveness.

Halnn superhard, as a pioneer of superhard cutting tools in China, its CBN tools can process hard material workpiece hardness between 

HRC45-79, for hardened steel can be easily solved.Halnn recommends two CBN tools - BN-H10 and BN-H21 CBN inserts, all of 

which are compound CBN tools. They are made of imported sheets and advanced mechanical equipment. Cracked, showing strong 

impact toughness and fracture resistance.


                                                                      



1.The comparison effect is as follows:

Halnn compound CBN tool BN-H10 continuous turning gear inner hole
	Workpiece material: 20CrMoTi Workpiece hardness: HRC58-62 Tools type: BN-H10 CNGA120408 Cutting parameters: Cutting speed(Vc)=180m/min, Feed rate(Fr)=0.1mm/r, Cutting depth(ap)=0.2mm Processing method: dry cutting
Tool material	Cuttingspeed(Vc) m/min	Tool life pcs/edge	Production beat s/pcs
Halnn BN-H10	180m/min	800	6
a European ceramic cutter	130m/min	150	8.5

Halnn compound CBN tool BN-H21 interrupted cutting gear end
	Workpiece material: 20CrMoTi Processing conditions: strong interrupted cutting Workpiece hardness: HRC58-62 Tool type: BN-H21 WNGA080408 Cutting parameters: Cutting speed (Vc)=300m/min, Feed rate(Fr)=0.1mm/r, Cutting depth(ap)=0.3mm Processing method: dry cutting
Tool material	Cutting speed (Vc) m/min	Cutting depth(ap) mm	Production beat pcs/edge
Halnn BN-H21	300	0.3	600
a European CBN tools	300	0.3	450