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Explain Pattern allowances.
written 8.9 years ago by gravatar for rsk.bond rsk.bond • 0 modified 3.8 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k

Mumbai University > Mechanical Engineering > Sem 3 > Production Process 1

Marks: 5M

Year: MAY 2015
production process
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written 8.9 years ago by gravatar for rsk.bond rsk.bond • 0

Pattern is the replica of the casting to be produced. Replica means that shape of the pattern remains same as that of the shape of casting to be produced.

                                     Pattern size=casting size±allowance

Pattern allowances are of five types

a. Shrinkage allowance

b. Machining allowance

c. Draft allowance

d. Distortion allowance …

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