| Paper | Title | Page |
|---|---|---|
TU1C3 |
Turbopumps: Lowest Vibration and Highest Uptime Made with Laser Balancing Technology | |
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| The balance quality of a rotor has an influence on its uptime and vibration. With a rotor speed of up to 1500 Hz, it is particularly large for turbopumps, which therefore are sensitive to the smallest mass unbalances. A certain unbalance cannot be completely avoided, which will always lead to a rotating radial force and thus vibrations. Reducing the unbalance is a necessity for the safe and reliable operation of turbopumps and has a positive impact on numerous vibration sensitive applications. Furthermore, the reduction of the radial forces extends the lifetime of the bearing that supports the rotor, which lowers the maintenance frequency. In the past, the best balance was achieved by adding additional mass (balancing screws), or by removing mass with machining processes. The latest and currently most efficient method is Laser Balancing, where the unbalance compensation is achieved by removing rotor material in the form of segments with the technique of laser ablation. This innovative technology was developed and patented by Pfeiffer Vacuum. | ||
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