Pump Casting

Ceramic Coating (Ceramic Investment) : Successive coats of ceramic slurry and refractory sand, fused silica are applied on assembled cluster/tree with intermediate drying time to form a self-supporting Shell or called Mold.

De-Waxing & Curing: De-waxing is the next step. The Invested Wax in the properly dried shells are melted out by applying heat source. The hollow shells are formed having cavities inside. These hollow shells or ceramic mould are then fired in high temperature baking furnace to cure the refractory material and to withstand the molten metal during pouring from the melting unit.

Melting & Casting: The specified molten metal alloyed in induction melting furnace is then poured in the pre-heated & hot-baked hollow shells (moulds) ensuring complete filling of the entire shell cavity.

Shell Release & Fettling/Grinding: Upon cooling, the ceramic shells are removed by usual knocking out operations by mechanical vibration and chemical cleaning. Parts are separated from the metallic sprues resulting Precision Castings after usual operations of gate grinding, cleaning and further operation like heat treatment, surface treatment etc.

Final Inspection: Finished products of casting are carefully inspected for compliance with clients drawings and specifications and thorough visual & dimensional inspection are carried out to maintain the integrity of the required component.

Investment Casting for Pumps Parts