Turning examples |
Jet Turbine Shaft
| Component |
Jet turbine shaft |
| Material |
Cast steel |
| Tool |
Tuned 570 boring bar (special) conical and elliptical, with Coromant Capto C6 mounting Bar diameter 63 mm at rear edge, 40 mm at front edge, length 550 mm |
| Insert |
Roughing insert TNMG-UM, finishing insert TNMG-UM |
| Grade |
GC 4025, GC 1525 (cermet) |
| Cutting depth (ap) |
Roughing insert 2 mm, finishing insert 0.3 mm |
| Machining diameter |
80 mm |
| Max. machining depth |
550 mm |
| Feed (f) |
Roughting insert 0.28 mm/rev, finishing insert 0.33 mm/rev |
| Cutting speed (vc) |
Roughing insert 80 m/min, finishing insert 120 m/min |
Component manufacture
Oskarshavn nuclear power plant
| Component |
Pipe (inconel), length 1100 mm |
| Tool |
570 style boring bar |
| Total tool overhang |
9 x D |
| Cutting speed |
100-120 m/min |
| Cutting depth |
2.5 mm |
| Feed |
0.15-0.25 mm/rev | |
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Silent Tools® is a definition of
tool holder made to reduce
vibrations due to a damper inside
the tool body and is a trade mark of
Teeness ASA. Damped boring bars are
designed for high productivity,
close tolerances and overhang beyond
4 x the bar diameter.
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