Deep rolling of turbine disk
Task
Increase the component life time and avoid stress corrosion cracking
Solution
Yielding internal stress by deep rolling different workpiece sections with the HG13-9E270° tool
User benefits
- Increase life time by about 20%
- Elimination of stress corrosion cracking
Details
- Workpiece: Turbine disk
- Part of: Steam turbine
- Material: Forged steel
- Tensile strength: 1200 N/mm2
- Hardness: 38 HRC
Parameter
- Tool: HG6-9E270°
- Circumferential speed: 80 m/min
- Feed rate: 0,25 mm/rev.
- Rolling force: 1500 N
- Cycle time: 60 seconds
DOWNLOAD Application Example Turbine Disk
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ECOROLL AG - Deep rolling of turbine disk Increase of component life time and elimination of stress corrosion cracking