High hard steel Turning grade
Excellent wear and fracture resistance by employing a newly developed TiAlN coated, suitable for processing hardened steel above HRC50.Including following 3 grades:
BHC115P、BHC210P:Suitable for hardened steels application from light-interrupted to continuous machining.
BHC125P、BHC225P:General-purpose grade suitable for typical hardened steel machining.
BHC135P:Suitable for heavy interrupted hardened steel processing.
- Feature
- Application
- Application case
PCBN
H type High hard steel Turning grade
| ISO | Grade | Grade
Color |
Grade Microstructure | Grade Feature |
| H | BHC115P | Purplish
grey |
 |
•New TiAlN coating provides the good resistance to notch wear,
which reduces the roughness of the workpiece surface. •Recommended for finishing of quenched steels when high surface quality and close tolerances are required. |
| BHC125P | Purplish
grey |
 |
•CBN substrates with TiAlN coating have great toughness and wear
resistance, which is capable of longer tool life and more stability. •Recommended for general machining of quenched steels. |
|
| BHC135P | Purplish
grey |
 |
•CBN substrate with high edge toughness matching TiAlN coating
greatly improves wear resistance. •Recommended for interrupted processing of quenched steels. |
|
| BHC210P | Bronze |  |
•The new double-layer nanostructure AiTiSiN coating has excellent
heat resistance and wear resistance, achieving stable performance and excellent surface roughness. •Suitable for precision machining conditions with high requirements for surface roughness and dimensional accuracy of quenched steel. |
|
| BHC225P | Bronze |  |
•The new double layered nanostructured AiTiSiN coating is coated
on a specially designed CBN substrate, which has strong toughness and further improves wear resistance, achieving more stable processing and long service life. •Suitable for universal processing of various quenched steels. |
PCBN
H type High hard steel Turning grade
| ISO | H | Workpiece Material | High hardness material | Hardness | ≥HRC50 | |
| Product Serise | Appli-cation | Grade | Cutting Range | Min-Optimum-Max | ||
| Vc(m/min) | ap(mm) | f(mm/rev) | ||||
| Brazed | Continuous~ Light intermittent | BHC210P | Finishing | 140-180-260 | 0.05-0.10-0.20 | 0.05-0.08-0.15 |
| Semi-Finishing | 100-150-180 | 0.10-0.20-0.35 | 0.08-0.12-0.25 | |||
| BHC115P | Finishing | 100-160-200 | 0.05-0.10-0.20 | 0.05-0.08-0.15 | ||
| Semi-Finishing | 70-140-160 | 0.10-0.20-0.35 | 0.08-0.12-0.25 | |||
| Light ~ Medium intermittent | BHC225P | Finishing | 120-160-220 | 0.05-0.10-0.20 | 0.05-0.08-0.15 | |
| Semi-Finishing | 100-140-170 | 0.10-0.20-0.35 | 0.08-0.13-0.25 | |||
| Roughing | 100-120-140 | 0.25-0.35-0.50 | 0.10-0.20-0.25 | |||
| BHC125P | Finishing | 120-150-180 | 0.05-0.10-0.50 | 0.05-0.10-0.20 | ||
| Semi-Finishing | 100-120-180 | 0.10-0.20-0.35 | 0.08-0.13-0.25 | |||
| Roughing | 60-110-140 | 0.25-0.35-0.50 | 0.10-0.20-0.25 | |||
| Heavy intermittent | BHC135P | Finishing | 80-120-150 | 0.05-0.10-0.20 | 0.05-0.08-0.15 | |
| Semi-Finishing | 60-100-130 | 0.10-0.25-0.35 | 0.08-0.13-0.25 | |||
CASE：Secondary planetary gear machining
| Specification | CNGA120408M-2-BHC225P |
| Grade | BHC225P |
| Material | 18CrNIMo7A（HRC58~62） |
| Cutting speed | Vc=104m/min |
| Feed rate | fr =0.37mm/r |
| Cutting depth | ap=0.25mm |
| Cooling method | Water based emulsion/outer cooling |
| Cutting method | Continuous precision turning of inner holes(D316) |
