Francis Turbine Runner 1000mm Stainless Steel 5 Axis CNC Machined for Hydropower Plant Replacement

Francis Turbine Runner for Hydropower Plant Replacement

This Francis runner is manufactured for hydropower stations undergoing runner replacement or capacity upgrading. Each runner is cast in stainless steel ZG06Cr13Ni4Mo, machined on 5 axis CNC centres and dynamically balanced before delivery, so the unit can be installed with minimal on site fitting work.

Product Parameters

Runner Replacement Scope

• Reverse engineering from the original runner drawing, 3D scan or site measurement
• Crown, band and blade fabrication with matched weld procedure qualification
• Stress relief heat treatment and full machining of mating fits to the shaft flange
• Optional supply of wearing rings, guide vanes and labyrinth seals as a matching set
• Site supervision for installation, alignment and commissioning on request

Why This Runner

The 5 axis CNC profiled blade passage keeps the hydraulic profile within drawing tolerance, which protects efficiency after a runner change out. Dynamic balancing at G6.3 grade reduces vibration and shaft run out, extending bearing and seal life. For stations with abrasive silt, the CA6NM stainless grade provides better cavitation and erosion resistance than carbon steel runners.

Packing and Delivery

The runner is protected with rust preventive coating, fixed on a steel skid and packed in a seaworthy wooden case. Typical lead time is 60 to 90 days after drawing approval and deposit, depending on diameter and blade count.

About DSSD

Deyang Dongsen Hydropower Equipment Co., Ltd. is based in Deyang, Sichuan, China and has supplied hydraulic turbine generator sets and EPC services for more than 500 hydropower stations since 2007. Product range covers Francis, Kaplan, Tubular, Pelton and Turgo turbine generator sets from 100 kW to 50 MW.