The thesis presents a comparative analysis of manufacturing technologies for Kaplan guide vanes in hydropower. The main issue is the selection between forging, casting, and welding, considering costs, lifespan, and operational risks. The research methodology is based on cost analysis, lifespan evaluation, and risk identification for each technology. The results show that forging technology incurs higher initial costs but extends the lifespan and reduces the risks of failure in the long term. Conversely, casting and welding are more cost-effective but come with higher risks of operational errors.
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