unit 2 pattern making and foundry pattern making and foundry structure 2 1 introduction objectives 2 2 pattern making 2 2 1 pattern materials 2 2 2 types of pattern ...
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...Unit pattern making and foundry structure introduction objectives materials types of allowances colour coding for patterns core prints boxes master composition moulding sand properties testing methods processes definition gating system function an ideal gate factors directional solidification metal melting furnaces summary answers to saqs the process a wooden or metallic is known as acts principle tool during casting can be defined model desired so constructed that may used forming impression cavity called mould in other suitable material this when filled up with molten forms shape after poured flow ability metals very important useful characteristics engineering deals producing castings moulds prepared by whole classified into different stages except stage all are done shop studying you should able classify describe distinguish between print explain workshop technology parts functions gated elaborate classification cores conceptualize about crucible cupola furnace one needs have simil...