In the next stage the mould along with cast moves on the conveyor for required time so that the cast get hardened and contracted sufficiently to enable it to be removed from the mould by hand and put into a dryer. The empty mould is then moved back through the conveyor via a dryer for drying up the moulds and reaches as the first point for the slip filling once again. This process needs very little supervision and requires minimum labour and the cost of the production is also very low.
However the slip quantity needs proper attention for better control in the manufacturing process. The average life of the moulds varies from 60 cycles to 150 cycles depending upon the slip quality and the mould quality. The preparation of the moulds play a major role in improving the life of the moulds. In some factories chilled water is used for mould production which is a proven technique in improving the mould life.
To be continued………………
