Sweep mounding (Description 2 Marks, Figure 2 Marks)

Sweep mouldings are employed for moulding parts whose shape is that of a surface of revolution. A base 1 and spindle 2 is well placed in the foundry floor. The sand is filled in and rammed until the excavation forms approximately the shape and size of the required casting. The sweep holder 5 is then placed in the spindle land and weep 6 is attached by bolts and nuts. The surface of the mold is produced by the profile of the sweep as it is rotated about the spindle as shown in fig (b). After sweeping, the spindle is removed and the mould patched at the centre. The gate is then cut and the mould is ready for pouring as shown in fig(c)

Sweep mounding (Description 2 Marks, Figure 2 Marks)

Sweep mouldings are employed for moulding parts whose shape is that of a surface of revolution. A base 1 and spindle 2 is well placed in the foundry floor. The sand is filled in and rammed until the excavation forms approximately the shape and size of the required casting. The sweep holder 5 is then placed in the spindle land and weep 6 is attached by bolts and nuts. The surface of the mold is produced by the profile of the sweep as it is rotated about the spindle as shown in fig (b). After sweeping, the spindle is removed and the mould patched at the centre. The gate is then cut and the mould is ready for pouring as shown in fig(c)