Wheel coat machining (Kaplan type) 𝘍𝘌𝘚𝘚𝘌𝘕𝘏𝘌𝘐𝘔
Wheel coat machining (KAPLAN types)
In January 2022, we worked on the G4 Group (Kaplan type) of the Fessenheim Hydroelectric Power Plant, in France, for our client EDF. At the beginning of January 2024, our teams carried out an identical operation on Groupe G3 de la Centrale.
Enlarge the cylindrical and spherical part of the existing wheel mantle by 3 mm radius, while copying the shape already present. The machining had to be done on a height of 1700mm.
- Final side of cylinder and sphere: Ø6686mm 0.1 mm radius
- Surface Condition: Ra 3.2
Our intervention took place in several stages:
- Step 1: Analysis of the subject in our Design Office (feasibility, 3D modeling of the turbine, study and calculations to determine the profile of our shape copying element, implementation of our machine in the 3D work environment).
- Step 2: Carrying out pre-work checks (Laser Tracker) by an external company.
- Step 3: Installation of our machine on site and machining.
- Step 4: Realization of after-work checks (Laser Tracker) by an external company.
3D MODELLING
Calculations were used to study and verify the shape of the copying surface for machining.
PRE-WORK & MACHINE SETUP
Our machine was installed in the turbine and adjusted with the help of the Laser Tracker
