Manufacturing & Assembling Services

We are leaders in the market for providing best range of Mold Castings and Centrifugal Casting

Mold Castings

Rapsri can manufacture permanent mold castings ranging from a few grams to up to about 20 kilograms. While the smaller sizes are manufactured by manual process, the bigger sizes are manufactured on machine with automated PLC controlled tilting and mold coating facility. The casting profile is machined into a specialty mould material (two or more depending on the complexity of the part), along with the gating system. The machined molds are then assembled along with required cores into a die assembly. The metal is poured into a die which then flows under gravity while being skillfully tilted to fill the mould appropriately. After the casting is removed from the cavity the moulds and cores are cooled in a proprietary solution which readies it for the next cycle.

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Centrifugal Casting

Centrifugal Castings are produced by pouring molten metal into a permanent mold that is rotated about its axis at high speeds (300 to 3000 rpm). The molten metal is centrifugally thrown towards the inside mold wall, where it solidifies after cooling. The axis of rotation may be horizontal or inclined at any angle up to the vertical position. The speed of rotation and metal pouring rate vary with the alloy and size and shape being cast. The casting is usually a fine grain casting with a very fine-grained outer diameter, the inside diameter has more impurities and inclusions, which can be machined away. The following operations include in centrifugal casting - rotation of mold at a known speed, pouring the molten metal, proper solidification rate, and extraction of the casting from the mold.

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