Shapes are produced with the help of additional mould parts called "cores". For simple shapes without any under cuts the metallic cores could be used, whereas for undercuts and complex hollow shapes, which are difficult to retract, sand or plaster of paris cores are employed.

The GDC, process has several advantages. The process is suitable for mass production with better reproduction: dimensional accuracy and surface finish than conventional sand castings. A minimum wall thickness of 3.0 mm can be cast. Exceptionally, 2mm wall thickness is cast over small areas. Castings ranging from few grams to-100 Kgs of Aluminium alloy can be cast.

As the component size and complexity increases the process becomes more expensive and becomes uneconomical. It will also cause difficulty in handling the die and in extracting the casting from the die with reduction in dimensional accuracy and soundness of the casting.

The process has certain disadvantages. Limitation of geometry /size is a main disadvantage, as it is difficult to cast large size highly complex shapes. Beyond a particular shape and size the process becomes uneconomical. It is difficult to attach gates and risers at all desired locations. The casting yield is low when compared to other die casting process In GDC, , the tooling costs are higher than that for sand castings and hence will be uneconomical for smaller production quantities. Tooling modifications can be expensive. Comparison of different casting processes.

• DIGITAL TRANSFORMATION USING SPECIAL PROCESSES FOR
  • PATTERN MAKING
  • CORES
• INHOUSE SAND CASTING
• INHOUSE TILTING GRAVITY DIE CASTING
• ALUMINIUM BLOCK MACHINING
• SPECIALITY PRODUCTS
  • Epoxy Flooring & Controlled Humidity and Temperature in Sand Forming Area
  • In house Simulation Software for Mould Flow Analysis