Machining the turbine blade
Successfully machine super or titanium alloys
Turbine blades are subjected to phenomenal thermal stresses and must always deliver peak performance over the entire life of the aircraft engine. Aircraft engineers are using super alloys or titanium alloys and a steady stream of newly developed materials to look for new ways of making turbine blades even tougher. This in turn increases the stresses imposed during machining, as these materials are extremely difficult to cut and efficient manufacturing is essential.
Thanks to our tool systems, which are designed to deliver maximum levels of productivity, machining times are kept within acceptable limits, even during the complex roughing processes used for the rhombus and blade.
1. MaxiMill HFC-TUR
High-feed indexable insert milling system for larger cutting depths
- HFC milling with larger cutting depths than conventional systems owing to the adapted setting angle
- Coated carbide insert grade CTCS245 for heat-resistant alloys and CTC5240 as the benchmark in titanium machining
2. MultiLock for solid carbide milling heads
Highly efficient finishing due to the patented exchangeable head system
- Cost effective, unbeatable price-performance ratio
- Closes the gap between indexable insert and solid carbide systems
- Extensive product range for other applications
3. MaxiMill 251
Versatile machining options with button inserts
- Button insert milling system for large areas
- Universal freeform milling for every application and machining strategy
- Extensive range of tools and indexable inserts
4. MaxiMill 261 – ceramic
Extremely productive freeform milling with positive button inserts, machining of large areas of Ni-based alloys
- Extremely productive: more than 10x higher cutting speeds possible compared to carbide inserts
- Drastically shortened machining times for roughing, regardless of the machining strategy
5. Conical ballnose carbide milling cutter
Machining of specific contours on the blade root
- Adapted geometry for machining special contours on Ni-based alloys and titanium
Practical examples of the tools
MaxiMill HFC-TUR
Turbine blade
- Material: 1.4418, Cr17Ni4Cu4Nb,
- CT tool: AHFC.50.R.05-12-TUR
- CT indexable insert: XOLX 120410ER-F40 CTC5240
- Application: freeform roughing
| Cutting data | CERATIZIT | Competition |
| Vc [m/min] | 224 | 224 |
| fz [mm/tooth] | 0.55 | 0.3 |
| ap [mm] | 1.15 | 1.15 |
| Emulsion | Yes | Yes |
| Q [cm3/min] | 142 | 78 |
| Tool life [min] | 1 | 0.5 |
MultiLock for solid carbide milling heads
- Material: Ti6Al4V
- Tool: special exchangeable head
- Application: 3D finish machining of an airfoil
| Cutting data | CERATIZIT |
| Vc [m/min] | 120 |
| fz [mm/tooth] | 0.045 |
| ap [mm] | 1 |
| ae [mm] | <9 |
| Emulsion | Yes |
| Tool life [min] | 320 |
MaxiMill 261 – ceramic
Turbine blade
- Material: Nimonic 80A
- Tool: G261.32.R.03-1204
- Indexable insert: RPGN 120400EN CTIS710
- Application: heliroughing of a turbine blade
| Cutting data | CERATIZIT | Competition |
| Vc [m/min] | 1000 | 1000 |
| fz [mm/tooth] | 0.1 | 0.1 |
| Vf [mm/min] | 2984 | 2984 |
| ap [mm] | 3 | 3 |
| ae [mm] | Variable | Variable |
| Emulsion | dry | dry |
| Tool life [min] | 8 | 5.5 |