Types of Patterns The various kinds of patterns that we use in casting process are 1) Single piece pattern 2) Two piece pattern 3) Gated pattern 4) Multi piece pattern 5) Match plate pattern 6) Skeleton pattern 7) Sweep pattern 8) Lose piece pattern 9) Follow board pattern 10) Cope and drag pattern 11) Segmental pattern and 12) Shell pattern 1) Solid or Single Piece Pattern Single piece pattern is the cheapest pattern among all other types of pattern. This pattern generally used in simple processes. It is applied in small scale production. It is often used for the generation of large castings such as stuffing box of steam engine and for creating simple shapes, flat surfaces like simple rectangular blocks. The important characteristic of this pattern is that there is no need of joint in the mold area. In this pattern one surface is considered as flat portion. This flat surface is used for parting plane. Sand tools are used to cut the sand which ultimately make gating system. The molding...
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