Machining the combustion case
Not just a lot of hot air: the pressure’s really on here!
The combustion chamber of an aircraft turbine is a system of superlatives: for instance, temperatures and pressures go sky-high when the compressed hot air and kerosene are ignited. This places tremendous demands on the construction material, which means heat-resistant super alloys are the only option. However, these can only be machined using extremely tough tools.
To ensure that the required level of efficiency is maintained in the face of all these challenges, we have optimized our tools for both long haul and shorter domestic flights.
1. MonsterMill TCR
Machining of smaller areas and pockets in titanium or Ni-based alloys
- Perfectly adapted geometry for machining titanium and heat resistant super alloys
- A huge range of end mills, torus and ballnose cutters
2. SiAION ceramic grade 1481
Roughing of Ni-based alloys at impressive cutting speeds
- 1481 SiAlON ceramic with excellent notch wear resistance, the first choice for Inconel718
- CTKS710 whisker ceramic as an alternative for other applications, particularly for continuous long cuts
3. CTPX710 carbide grade
Turning finish machining with low cutting forces
- The latest PVD coating technology for machining heat resistant alloys, titanium and stainless steel
4. Fullmax 52P.57Un solid carbide reamer
For precise drilling with the perfect finish
- Solid carbide reamer for precise drilling of heat-resistant alloys with superb surface quality
5. MGF M6 1.5D thread milling cutter
Thread milling with special solid carbide milling cutters
- Solid carbide thread milling cutter
- Optimized for machining Ni-based alloys
Practical examples of the tools
SiAION ceramic grade 1481
Aircraft engine housing
- Material: Inconel 718+
- Indexable insert: RNGN 120700TN-010D 1481 (chamfered)
- Application: external longitudinal turning, roughing
| Cutting data | CERATIZIT |
| Vc [m/min] | 260 |
| nmax [min-] | 2500 |
| f [mm/U] | 0.18 |
| ap [mm] | 1.5 |
| hex [mm] | 0.12 |
| Emulsion | Yes |
| Q [cm3/min] | 70 |
| Tool life [min] | Up to 10 min. |
Fullmax 52P.57Un solid carbide reamer
| Details | CERATIZIT |
| Material | Inconel 718 |
| Bore diameter | Ø9.525 +/- 0.013 mm |
| Bore depth | 5 mm |
| Vc [m/min] | 30 |
| Vf [mm/rev] | 0.3 |
| Emulsion | Yes |
| Tool life [number] | Up to 1440 bores |
MGF M6 1.5D thread milling cutter
| Details | CERATIZIT |
| Material | Inconel 718 |
| Thread type | M7x1 |
| Thread depth | 10 mm |
| Machining time | 48 s |
| Emulsion | Yes |
| Tool life [number] | Up to 210 threads |