SA30
Roughing & semi-finishing heat resistant alloys｜
Better notch resistance than whisker ceramics
Improved boundary wear resistance to prevent cutting edge wear and breakage
Features
- Better notching resistance compared to whisker ceramics
No need to program ramping to shift wear on insert - Better flank wear resistance compared to other Sialons and is ideal for semi-finishing Inconels and Waspaloy
- Excellent thermal shock resistance
Tooling application
Roughing with no scale to semi-finishing heat resistant alloys
Turning/Grooving/ Milling
| Cutting conditions
| Grade | Material | Operation type | Machining | Cutting speed (m/min) | Feed(mm/rev) | DOC(mm) | Coolant |
|---|---|---|---|---|---|---|---|
| SA40 | Heat resistant alloys | Turning | Roughing | 180 – 270 | 0.12 – 0.25 | 1.0 – 2.5 | WET |
| Profiling / Semi-finishing | 0.12 – 0.25 | 1.0 – 2.0 | |||||
| Grooving | 0.07 – 0.15 | – | |||||
| Milling | Indexable | 600 – 1200 | 0.07 – 0.12 | 1.0 – 2.5 | DRY |
Why are Sialon ceramics so effective at high-speed machining of heat resistant alloys?
Silicon nitride (Si3N4) is combined with Aluminum (Al) and oxygen (O) to make SiAlON.
Sialon has needle-shaped particles similar to that of Silicon nitride.
The arrangement of these particles makes the material withstand the impact force during cutting.
The addition of the alumina improves its heat resistance characteristics.
The property advantages makes it perfect for machining heat resistant alloys.
| Semi-finishing Inconel material
| Milling Inconel
| Case Study
| Seal part (finishing) | |
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| SA40 |
7min / part |
| Competitor’s whisker |
15min / part Cutting speed: 200m/min |
| Competitor’s carbide |
24min / part Cutting speed: 50m/min |
SA40’s excellent wear resistance allows high-speed machining.
So, highly efficient machining is achieved compared to whisker and carbide tools.
| Turbine case (semi-finishing) | |
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| SA40 |
7min / part |
| Competitor’s whisker |
5min / part Broken |
SA40 insert achieved more stable machining due to its excellent notching resistance compared to the competitor’s whisker insert.
