ESC process to manufacture the castings
Its properties can reach the standard of forged parts
Price is less than Forged part
The ESC is advanced technological process to manufacture the castings through associating the refining metal with finishing high quality castings in one step. Advantages of ESC are as followed: Nonmetallic inclusions are reduced about a half and inclusions are smaller and more scattered; Sulphur which is usually harmful element decreases more than a half. Mechanical property can resist lamellar tearing. The performance in resisting impact (ISO-V) is enhanced greatly. The performance of KIC is enhanced greatly; Improved material's anti-fatigue ability; The density of wicket gates enhanced greatly and by remarkably improving reliability in resisting the corrosion from air, sand and soil in river extends its life time and safetyUDT can meet all requirements in the standards of CCH70-3 and ASTM A609.
Hydraulic Turbine wicket gate (guide vane)