Roughing (no scale) to semi-finishing heat resistant alloys ｜ Whisker ceramic
Roughing (no scale) to semi-finishing heat resistant alloys
Turning/Grooving/Milling
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.
The addition of the silicon carbide (SiC) to alumina greatly improves the strength of material.
Prevents the progression of cracks caused by impact forces during machining.
[ Cutting conditions ]
Material : Inconel718 (Semi-finishing)
Cycle time : 5.0 min
vc = 240m/min F = 0.15mm/rev ap = 1.0mm,
800 SFM .006 IPR .039 DOC
Wet
[ Tools used ]
Insert used : RPGX120700
| Grade | Material | Operation type | Machining | Cutting speed (m/min) Cutting speed (SFM) | Feed(mm/rev) Feed (IPR / IPT) | DOC(mm) DOC(inch) | Coolant |
|---|---|---|---|---|---|---|---|
| WA1/WA5 | Heat resistant alloys | Turning | Roughing | 180 – 300 600 – 1000 | 0.12 – 0.25 .005 – .010 | 1.0 – 2.5 .040 – .100 | WET |
| Profiling / Semi-finishing | 180 – 330 600 – 1100 | 0.1 – 0.25 .004 – .010 | 1.0 – 2.0 .040 – .080 | ||||
| Grooving | 0.05 – 0.10 .002 – .004 | – | |||||
| Milling | Indexable | 600 – 1000 2000 – 3300 | 0.07 – 0.12 .003 – .005 | 1.0 – 2.5 .040 – .100 | DRY |
| Jet engine part | |
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| WA5 |
80mm
3.15 inch
/ corner (Consistent performance)
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| Competitor’s whisker ceramic |
80mm
3.15 inch
/ corner (Streaks visible on part surface)
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WA5 had stable machining performance compared to competitor’s whisker grade.
| Gas turbine case | |
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| WA1 |
1 pass = 2min
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| Competitor’s carbide end mill | 1 pass = 60min |
WA1 significantly reduced cycle time compared to the competitor’s carbide end mill.
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