The choice of materials for hydro turbines
Stay Ring Lower Cover Turbine Shaft Upper Cover Svartisen Power Plant Norway Francis turbine Spiral casing stay ring and stay vanes Materials Structural steel • Carbon steel • HSMA High Strength Micro Alloy • Heat treatment steel Example • S355 DIN • St52 EN Weight of the spiral casing Guri 2 VENEZUELA Francis turbines Covers • Materials Structural
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