PRODUCTS  Centrifugal Cast Balls

KEF Holdings has added another efficient and cutting edge technology to satisfy the needs of customers in Ball Valve industry.

In centrifugal casting, molten metal is poured into a spinning metallic die. Centrifugal forces during spinning allows flow of heavy metal to outside diameter and lighter oxides and impurities are restricted to inside diameter of casting.

The metal solidifies from outside in, leaving no mid-wall shrinkage or porosities. Impurities in the inside bore are machined out to have defect free casting with no shrinkage or gas cavities. The casting produced has a structure very close to a forged product.

Process
1. Centrifugal Casting
2. Heat Treatment
3. Machining
4. Finishing (grinding - polishing)
5. 3 Dimensional Inspection

Machining
High productivity CNC Machines operated by qualified and motivated operators ensures quality product with close tolerances according to Customer Drawings.

Finishing
SAFOP most advanced technology grinding/polishing machine impart true sphericity and surface finish to balls for smooth and trouble free operation of soft and metal seat valves. Machine can finish ball castings from 6” to 36” size with or without stem.

3 Dimensional Inspection
3 D Coordinate Measuring Technology enables exhaustive inspections guarantee machining quality, in accordance with customer Drawings and Specifications.

Our product:
Centrifugal balls from size 10’’ to 20’’.
Finished statically casted balls from size 24’’ to 42’’.
Rings with external diameters between 400mm and 750mm.